T e c h n i c a l C a t a l o g u e MCCB Moulded Case Circuit Breaker
contents general overview... 2 feature - company profile and certifications... 6 MCCB - NF series circuit breaker, double repulsion breaking method... 11 - double number of copper contacts, materials of the NF series... 12 - method of installation, MCCB cross sectional area, positive indication & operation... 13 - suitability for isolation, compliance with standards... 14 - selection quick & easy selection table... 15 - power distribution technical details... 16 - characteristic curves NF series... 23 - physical dimensions & mounting holes NF series... 28 - accessories phase insulation barriers, electrical accessories & shunt trip... 40 - accessories under voltage device... 41 - accessories signal switches, rotary handle... 42 - accessories rotary handle... 43 - accessories mounting position... 45 - internal resistance & power loss... 46 - short circuit table DC voltage... 49 - selection table motor circuit protection... - selection table motor selection... 51 - selection table installation safety distance requirement... 53 - selection table terminal-tightening torque... 54 - terminal-cable & copper busbar connection data... 55 MCBs - BHQ series fixed type... 56 - BHP series plug-in type... 57 - BHQ & BHP operating characteristics & dimensions... 58 notes... 60
g e n e r a l o v e r v i e w NF series The NF series MCCBs are available from AF to 1200AF. Pole sizes from 1 to 4 are available for the various models. All NF series MCCBs are suitable for isolation. AF NF-MA 10kA (2P & 3P) 2 2AF NF2-GP NF2-HA 10kA (3P) 25kA (1P to 4P) ka (1P to 4P) 65kA (3P) NF2-MA NF2-L AF NF-GP NF-HA 10kA (2P & 3P) 25kA (1P to 4P) ka (1P to 4P) 65kA (3P) NF-MA NF-L
1200AF NF1200-HA ka (3P & 4P) 400AF NF400-GP NF400-HA NF400-L 25kA (3P & 4P) ka (3P & 4P) 65kA (3P) 600AF & 800AF NF600-GP NF600-HA NF600-L 25kA (3P & 4P) ka (3P & 4P) 65kA (3P) NF800-GP NF800-HA NF800-L 3
g e n e r a l o v e r v i e w NF series 37-SDMS-01 NF-MA 37-SDMS-01 NF2-MA 37-SDMS-01 NF400-HA 37-SDMS-01 NF600-HA 37-SDMS-01 NF800-HA 4
37-SDMS-02 NF400-HA 37-SDMS-03 NF2-MA MCB: BHQ & BHP series AF BHQ-1 AF BHQ-2 AF BHQ-3 6kA (1P) 6kA (2P) 6kA (3P) AF BHP-1 AF BHP-2 AF BHP-3 6kA (1P) 6kA (2P) 6kA (3P) 5
f e a t u r e company profile Since our inception in 1974, our company specializes in manufacturing low voltage circuit breakers and have a reputation of producing products of consistent quality and high reliability. Our manufacturing facilities are certified to the international quality standards of ISO 9001, while our products are certified by ASTA Certification Services UK and SIRIM QAS International. With such high standards, our range of circuit breakers are able to meet your highest demands for quality, safety and reliability. 6
SIRIM QAS certification 7
f e a t u r e SIRIM QAS certification 8
SIRIM QAS certification 9
f e a t u r e SASO certification ICS = ICU % 10
NF series circuit breakers The demand for economical and high performance circuit breakers is ever increasing in the global market. The NF series circuit breakers provide a simple and reliable solution to meet this global demand where quality, performance and compliance are required. The NF series circuit breakers have been engineered to provide effective protection to low voltage power distribution systems. The NF series is a complete range of MCCB s from 10A to 1200A with 1, 2, 3 and 4 pole versions. An extensive range of electrical accessories is also available. double repulsion breaking method The double repulsion method uses a reverse-loop of current (I) flowing in essentially opposite directions (see figure). This creates a repulsion action and results in a greater opening force (Fm) between the fixed and moving contacts. This force also assists to rapidly extinguish the arc, thereby causing the moving contacts to open faster. A faster breaking time is achieved with this design. moving contacts fixed contact 11
f e a t u r e double number of contact coppers For the NF600 and above circuit breakers, double moving contacts are used instead of a single contact. This additional moving contact improves the short circuit breaking performance and reduces contact wear. double moving contacts in NF1200 materials of the NF series 12 The design of the NF series circuit breakers makes it suitable to be used in hot and humid climates. The material used for the circuit breaker casing consists of synthetic resins reinforced with glass fibers. Furthermore, the metal parts used in the breakers are chemically treated to protect against corrosion. The external copper terminals are tin-plated to prevent oxidation.
method of installation The NF series circuit breakers can be installed in vertical or horizontal position without any impact on its performance or de-rating of characteristics. horizontal vertical MCCB cross sectional area D C E B F A Parts Index for cross-sectional area of MCCB A MCCB casing made of high-impact BMC material reinforced with glass fibres, providing a safe and strong housing in the event of breaking high-fault currents. B Trip-free mechanism ensuring positive operation and isolation suitability. Designed for long service life and high number of operating cycles. Metal parts in mechanism are chemically treated to withstand harsh tropical weather conditions. C Arc chutes with predefined steel plates arrangement, provide high breaking capabilities. D Fixed and moving contacts utilizing the reverse loop current method, creates a repulsion force thus rapidly extinguishing the arc. E Common trip mechanism to ensure breaking of all poles even when the fault occurs at a particular pole. F Trip release consists of thermal (bi-metal) and magnetic devices suitable for use in AC or DC supply voltages. positive indication & operation The circuit breaker operating handle is designed to indicate the exact position of its moving contacts. Its trip-free operating mechanism cannot indicate that the breaker is ON if the moving contacts are in the OFF position. If the breaker trips due to an electrical fault or overload the handle will be in between the ON and OFF position. This is the TRIP position. To switch the breaker ON after tripping, the handle position must be switched to OFF position first and so to reset the breaker and then switch to the ON position. 13
f e a t u r e suitability for isolation In compliance with IEC 60947-2 standard, NF series circuit breaker guarantees no leakage currents and over-voltage withstand between the supply and load terminals when its moving contacts are in the open position. test trip button isolation compliance with standards 14 The NF series circuit breakers have been designed to meet international standards, complying with the following standards: 1. IEC 60947-2: International Electro 8. SEC Distributors: Saudi Electricity Committee Standard Company, Distribution Materials 2. BSEN 60947-2: British Standard Specifications Prequalified Manufacturer European Norm 9. SASO: Saudi Standards, Metrology & 3. JIS C 8201-2: Japan Industrial Standard Quality Organization 4. GB 14048-2: China Standard 10. Housing & Development Board, Singapore 5. CNS 14816-2: Taiwan Standard 11. Ministry of Electricity & Water, Kingdom 6. CE: Conformity European of Bahrain 7. SIRIM: Malaysia 12. Jabatan Perkhidmatan Elektrik Kementerian Pembangunan, Negara Brunei Darussalam
selection quick & easy table Rated Current In (A) 10 Interrupting Capacity Icu (ka) Sym at 415 Vac 25 65 10 15 NF-MA 20 30 40 NF-GP NF-MA NF-HA NF-L 60 75 80 NF-GP 125 1 160 175 NF2-GP NF2-MA NF2-HA NF2-L 200 225 2 2 300 3 NF400-GP NF400-HA NF400-L 400 0 600 700 800 0 1200 NF600-GP NF600-HA NF600-L NF800-GP NF800-HA NF800-L NF1200-HA 15
p o w e r d i s t r i b u t i o n technical details electrical characteristics model Code NF NF NF2 Ampere Frame (AF) AF AF 2AF Rated Current: In (A) at Ambient Temp C 10 15 20 30 40 10 15 20 30 40 60 75 80 125 1 160 175 200 225 2 Number of Poles Available 2 3 1 2 3 4 3 4 Rated Insulation Voltage: U i(v) 690 690 690 Rated Impulse withstand Voltage: U imp (kv) 8 8 8 8 8 8 8 8 8 Rated Ultimate Short Circuit Breaking Capacity: I cu (ka) MA GP MA HA L GP MA HA L 690V 5 5 10 10 35 5 10 10 35 0V 7.5 7.5 15 40 7.5 15 40 440V 10 10 25 65 10 25 65 IEC 60947-2 415V 10 10 25 65 10 25 65 400V 10 10 25 65 10 25 65 380V 15 15 30 60 15 30 60 230V 25 25 85 125 25 85 125 DC 2V 5 5 10 20 40 5 10 20 40 Rated Service Short Circuit Breaking Capacity: I cs = % I cu Rated Short Circuit Breaking Capacity: (ka) 600V 7.5 7.5 10 30 7.5 10 30 JIS C 8201-2 (sym) 440V 380V 10 15 10 22 65 15 30 10 22 65 15 30 220V 25 25 85 125 25 85 125 DC 2V 5 5 10 20 40 5 10 20 40 16 Suitable for Isolation Utilization Category A A A A A A A A A Pollution Degree 3 3 3 3 3 3 3 3 3 No. of Electrical Operations 20000 100 100 Notes: - denotes available.
technical details electrical characteristics model Code NF400 NF600 & NF800 NF1200 Ampere Frame (AF) 400AF 800AF 1200AF Rated Current: In (A) at Ambient Temp C 2 300 3 400 0 600 & 700 800 0 1200 Number of Poles Available 3 4 3 4 3 4 Rated Insulation Voltage: U i(v) 690 690 690 Rated Impulse withstand Voltage: U imp (kv) 8 8 8 8 8 8 8 Rated Ultimate Short Circuit Breaking Capacity: I cu (ka) GP HA L GP HA L HA 690V 10 10 35 10 10 35 10 0V 22 40 22 40 40 440V 25 65 25 65 IEC 60947-2 415V 25 65 25 65 400V 25 65 25 65 380V 30 60 30 60 60 230V 85 125 85 125 85 DC 2V 20 40 40 20 40 40 40 Rated Service Short Circuit Breaking Capacity: I cs = % I cu Rated Short Circuit Breaking Capacity: (ka) 600V 18 30 18 30 30 JIS C 8201-2 (sym) 440V 380V 25 65 30 25 65 30 220V 85 125 85 125 85 DC 2V 20 40 40 20 40 40 40 Suitable for Isolation 17 Utilization Category A A A A A A A Pollution Degree 3 3 3 3 3 3 3 No. of Electrical Operations 10 10 8000 Notes: - denotes available.
p o w e r d i s t r i b u t i o n technical details electrical characteristics model Code NF-MA NF2-MA 37-SDMS-01 NF400-HA NF600-HA Ampere Frame (AF) AF 2AF 400AF 600AF Rated Current: In (A) at Ambient Temp 55 C 10 15 20 30 40 60 75 80 125 1 160 175 200 225 2 2 300 3 400 0 630 Number of Poles Available Rated Insulation Voltage: U i(v) Rated Impulse withstand Voltage: U imp (kv) Rated Ultimate Short Circuit Breaking Capacity: I cu (ka) 3 7 8 3 3 3 7 7 7 8 8 8 IEC 60947-2 415V 25 25 380V 30 30 60 60 220V Rated Service Short Circuit Breaking Capacity: I cs = % I cu 85 85 Suitable for Isolation Utilization Category A A A A Pollution Degree No. of Electrical Operations 3 3 3 100 100 10 3 10 Notes: - denotes available. 18
technical details electrical characteristics model Code 37-SDMS-01 37-SDMS-03 37-SDMS-02 NF800-HA NF2-MA NF400-HA Ampere Frame (AF) 800AF 2AF 400AF Rated Current: In (A) at Ambient Temp 55 C 700 800 125 1 160 175 200 225 2 2 300 3 400 Number of Poles Available 3 3 3 Rated Insulation Voltage: U i (V) 7 7 7 Rated Impulse withstand Voltage: U imp (kv) 8 8 8 Rated Ultimate Short Circuit Breaking Capacity: I cu (ka) IEC 60947-2 415V 25 380V 60 30 60 220V Rated Service Short Circuit Breaking Capacity: I cs = % I cu 85 85 Suitable for Isolation Utilization Category A A A Pollution Degree 3 3 3 No. of Electrical Operations 10 100 10 Notes: - denotes available. 19
p o w e r d i s t r i b u t i o n technical details mechanical characteristics & accessories Width Length Depth Accessories a aa b * ^ bbb bb c ca model Code CL ON LOCKED OFF aa a UNLOCKED bb Without Terminal Cover b (mm) c ca Type of Terminals No of Mechanical Operations Weight (kg) Operating Handle Lock Terminal Covers Mounting Screws Phase Barrier Cable Lug Terminal Shrouds 37-SDMS-01 NF-MA NF2-MA NF400-HA 90 105 140 30 35 44 156 166 257 210 210 390 132 126 194 86 104 104 103 123 134 stirrup stirrup saddle 20000 20000 20000 1.5 2.4 6.5 - - - - - - - - - - NF600-HA 210 70 275 0 243 104 155 saddle 20000 9.5 - - 20 Width Length Depth Accessories a aa b * ^ bbb bb c ca model Code CL ON aa a UNLOCKED LOCKED OFF bb Without Terminal Cover b (mm) c ca Type of Terminals No of Mechanical Operations Weight (kg) Operating Handle Lock Terminal Covers Mounting Screws Phase Barrier Cable Lug Terminal Shrouds 37-SDMS-01 37-SDMS-03 37-SDMS-02 NF800-HA 210 105 140 70 35 44 275 166 257 0 177 277 243 126 194 104 104 104 155 123 134 saddle saddle 20000 20000 20000 10.5 2.2 5.5 NF2-MA stirrup - NF400-HA - - - - - - - * without Terminal Cover; ^ with Terminal Cover. Notes: - denotes available.
technical details thermomagnetic trip release model Code NF NF NF2 Ampere Frame (AF) Rated Ultimate Short Circuit Breaking Capacity: I cu (ka) Fixed thermal, Fixed Magnetic 10 x Ith Fixed thermal, Adjustable Magnetic AF MA AF 2AF GP MA HA L GP MA HA L mechanical characteristics Number of Poles (P) 2 3 1 2 3 4 1 3 4 a 75 42 60 90 120 48 105 140 b 130 130 155 155 155 155 165 165 165 c 60 60 68 68 68(80) 68 68 68(80) 68 ca 77 77 90 90 90(102) 90 92 92(104) 92 bb 110 110 132 132 132 132 126 126 126 aa 25 30 30 35 35 35 Type of Terminals M5 clamp terminal screw M8 screw M8 screw No of Mechanical Operations 20000 20000 20000 Weight (kg) 0.4 0.5 0.5 0.7 1.0(1.2) 1.4 0.7 1.5(1.6) 1.9 accessories Shunt Trip Device Under Voltage Trip Device Auxiliary Switch Alarm Switch Auxiliary + Alarm Switch 21 Rotary Handle Notes: All L-type breakers are only available in the 3-pole version; ( ) denotes for L-type. - denotes available; however, all accessories are not available for 1-pole models.
p o w e r d i s t r i b u t i o n technical details thermomagnetic trip release model Code NF400 NF600 & NF800 NF1200 Ampere Frame (AF) Rated Ultimate Short Circuit Breaking Capacity: I imp (ka) Fixed thermal, Fixed Magnetic 10 x Ith Fixed thermal, Adjustable Magnetic 400AF GP HA L 800AF 1200AF GP HA L HA mechanical characteristics Number of Poles (P) 3 4 3 4 3 4 a 140 196 210 280 210 280 b 257 257 275 275 406 406 c 103 103 103 103 140 140 ca 155 155 155 155 2 2 bb 194 194 243 243 375 375 aa 44 44 70 70 70 70 Type of Terminals M12 Bolt M12 Bolt M12 Bolt No of Mechanical Operations 20000 20000 20000 Weight (kg) 5.5(6.0) 7.2 10.0(11) 12.0 15.0 19.0 accessories Shunt Trip Device Under Voltage Trip Device Auxiliary Switch Alarm Switch 22 Auxiliary + Alarm Switch Rotary Handle Notes: All L-type breakers are only available in the 3-pole version; ( ) denotes for L-type. - denotes available.
c h a r a c t e r i s t i c s NF-MA characteristic curves tripping curve temperature characteristic 145 140 135 130 125 120 115 110 40~A Rated ambient 105 10A~30A 95 10 15 20 25 30 35 40 45 55 60 NF-GP, MA & HA characteristic curves tripping curve temperature characteristic Instantaneous trip 23
c h a r a c t e r i s t i c s NF2-GP, MA & HA tripping curve characteristic curves temperature characteristic 130 Current rating (%) 120 110 90 Rated ambient 80 Rated ambient C 10 20 30 40 60 70 Ambient temperature ( C) NF400-GP & HA tripping curve characteristic curves temperature characteristic 24
NF600/800-GP & HA tripping curve characteristic curves temperature characteristic Frame size: 800AF NF600 NF800 NF1200-HA tripping curve characteristic curves temperature characteristic 25
c h a r a c t e r i s t i c s NF-L characteristic curves tripping curve NF2-L characteristic curves tripping curve 26
NF400-L characteristic curves tripping curve NF600/800-L characteristic curves tripping curve 27
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s NF-MA front connection 2-pole 3-pole 28 2-pole 3-pole
NF-GP, MA & HA front connection 4-pole 2-pole 3-pole 2-pole 3-pole 4-pole 29
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s NF2-GP, MA & HA front connection 4-pole 3-pole 30 3-pole 4-pole
NF400-GP & HA front connection 4-pole 3-pole 3-pole 4-pole 31
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s NF600/800-GP & HA front connection 4-pole 3-pole 32 3-pole 4-pole
NF1200-HA front connection Insulation barrier (removable) Insulation barrier (removable) Bolt M12x 115 Mounting hold Mounting hold Conductor 78 406 346 95 406 346 95 N Neutral Pole 18.5 80 8 32 15 13 43 13 140 210 70 210 280 8 32 15 17 15 133.5 140 190 2 4 Pole 3 Pole 80 375 97 R11.5 70 70 M8 Screw or 10mm 33 3-pole 4-pole
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s NF-L front connection 3-pole 3-pole NF2-L front connection 3-pole 3-pole 34
NF400-L front connection 3-pole 3-pole NF600/800-L front connection 3-pole 3-pole 35
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s 37-SDMS-01 NF-MA front connection Breaker ON UNLOCKED OFF 22 LOCKED.2 132 156 Ø 8.5 Ø 4.5 132 30 60 90 83 90 86 103 30 M4x0.7 thread or 5 mm-dia. hold 37-SDMS-01 NF2-MA front connection 24.5 Breaker ON UNLOCKED 200 LOCKED OFF 126 166 102 126 Ø 7 Ø 4.5 35 70 105 99 104 107.5 123 35 M4x0.7 thread or 5 mm dia. hold 36
37-SDMS-01 NF400-HA front connection Breaker ounting hold ON UNLOCKED OFF 400 LOCKED 90.4 194 31.5 257 102.2 90.4 39.5 M20 Socket Set Screw 194 OFF Ø 12.5 47 Ø 7 M10 Hex. head Screw 43 44 M6 Screw 7mm dia. 63.4 63.4 140 162 8 37 95 97.5 104 113 134 37-SDMS-01 NF600-HA front connection 210mm (Max.) Breaker ON OFF 630 OFF UNLOCKED LOCKED 102 275 (Max. without cover) 102 Ø 4 15±0.2 82 Ø 8 243 Ø 14 94.5 5 97 104 107 155mm (Max.) t 0A: t= 6 m/m 630A: t= 8 m/m 800A: t= 12 m/m 70 M6 Screw or 7mm dia. hol 37
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s 37-SDMS-01 NF800-HA front connection 210mm (Max.) Breaker ON OFF 800 OFF UNLOCKED LOCKED 102 275 (Max. without cover) 102 15±0.2 82 243 Ø 4 Ø 8 Ø 14 94.5 5 97 104 107 155mm (Max.) t 0A: t= 6 m/m 630A: t= 8 m/m 800A: t= 12 m/m 70 M6 Screw or 7mm dia. hol 38
37-SDMS-02 NF400-HA front connection Phase Barrier Terminal Shroud Breaker Mounting hold ON OFF 400 194 31.5 90.4 257 102.2 90.4 39.5 Terminal Shroud 194 OFF 47 Ø 12.5 Ø 7 M10 Hex. head screw 43.5 87 140 95 97.5 104 113 134 44 M6 Screw or 7mm dia. hold 37-SDMS-03 NF2-MA front connection Phase Barrier Terminal Shroud M8 Hex. socket head screw 24.5 Breaker Terminal Shroud ON 200 126 166 102 126 OFF Ø 7 Ø 4.5 M8 Hex. socket head screw 35 70 105 99 104 107 123 35 M4x0.7 or 5 mm 39
a c c e s s o r i e s phase insulation barriers Inter phase barriers are provided as standard. The use of the inter phase barriers is necessary to increase the clearance distances between phases to prevent electrical faults during the operation of the circuit breaker. Model NF NF NF2 a 59 59 62 b 59 59 NF400 95 116 NF600 95 116 a dimensions of phase barrier insulators in mm NF800 95 116 NF1200 95 116 top b electrical accessories & shunt trip All electrical accessories supplied for the breaker are prewired. Accessories such as Shunt Trip, Under Voltage Trip, Alarm Switch, Auxiliary Switch and combination Alarm and Auxiliary Switch can be fitted into the breaker accessory compartments. Please refer to the table in page 31 for the accessories installation guide. Shunt Trip Device The Shunt Trip device opens the circuit breaker by means of an electrical signal. Voltages between 70% and 110% of the coil voltage rating will operate the shunt trip device. 40 All Shunt Trip devices are factory fitted with a cut-off supply switch.
/ 60 Hz Coil Power Consumption (VA) Coil Voltage NF NF NF2 NF400 NF600 NF800 NF1200 AC 110-240 120 120 120 20 (V) 200 200 200 AC - 4 (200V) AC 200-240 120 (330V) 200 200 200 AC 380-4 170 (4V) 200 200 200 AC 380-5 120 120 120 200 200 DC - 125 10 10 10 70 Trip Time (ms) < 15 < 15 < 15 8 to 15 8 to 15 8 to 15 8 to 15 Note: Other voltages can be supplied on demand. under voltage trip device The Under Voltage Trip device will open the circuit breaker contacts when the supply voltage to the coil drops below 70% of its voltage rating. After tripping, the circuit breaker can be closed manually again when the supply voltage is 85% of its coil voltage rating or more. The Under Voltage Trip device is always energized during normal conditions when supply voltage is healthy. Model AC Coil Voltage Consump (VA) Trip Time (ms) NF2 & below -110 200-220 380-415 440-480 5 < 30 41 NF400-110 200-220 400-440 5 5 to 30 NF800-110 200-220 400-440 5 5 to 30 NF1200-120 200-240 380-4 5 6 to 35
a c c e s s o r i e s signaling switches The Signaling switches allow the breaker status information to be obtained remotely. The signaling switch consists of several dry contacts with both normally open (N.O.) and normally closed (N.C.) positions. Auxiliary Switch - Provides breaker ON and OFF status information. Auxiliary Switch Alarm Switch - Provides breaker TRIP status information. Auxiliary + Alarm Switch - Provides breaker ON, OFF and TRIP status information. Alarm Switch Please refer to the above circuit diagram for the switch terminal codes in order to obtain different contact positions, such as N.O. and N.C. to suit the application. rotary handle mechanism The breaker mounted rotary handle mechanism allows the user to easily switch the breaker ON by a rotating action. The rotary handle mechanism is equipped with a safety device that prevents the panel door from being open when the breaker is in ON position. A bypass screw is provided for manual intervention when breaker is in ON position. 42 Pad locking facility is available on the rotary handle. The handle can be pad locked when the breaker is in OFF position.
rotary handle external dimensions Figure (a) Figure (b) rotary handle drilling plan Figure (c) Figure (d) Figure (e) Type Breaker Type No of Pole Figure External Dimensions Drilling Plan Dimensions (mm) A B C D Mounting Screws AC-NF-RHN0 AC-NF-RHN1 AC-NF-RHN2 NF-MA NF-GP MA HA NF-L EG-MA HA NF2-GP MA HA NF2-L EG2-MA HA 3P 3P 4P 3P 4P a c e 95 105 117 107 119 25 30 35 111 132 (116) 126 (145) M4 x 0.7 screw or ø 5 (X) breakers mounting screws (2pcs) (Y) operating handle mounting screws (2pcs) AC-NF-RHN3 AC-NF-RHN4 NF400-GP HA L NF600-GP HA L NF800-GP HA L NF1200-HA 3P 4P 3P 4P b d e 183 44 70 194 243 M6 screw or ø 7 (X) (Y) breakers mounting screws (4pcs) 43 Note All rotary handles are supplied with M4 x 0.7 screws and self-tapping ø 5mm screws.
a c c e s s o r i e s rotary handle appearance A direct rotating operating handle has a standard safety device which prevents the breaker from closing as long as the cover is open. It indicates the tripping of the breaker even in ON-lock position, but only in cases when a single padlock (35mm) is used. The degree of protection, in accordance with IEC529, is IP3X (or IP5X with provision of dustproof packing). The use of the rotary handle mechanism increases the IP rating of the breaker Type AC-NF-RHN0 to AC-NF-RHN2 AC-NF-RHN3 to AC-NF-RHN4 Left hinge H 0 or more 0 or more Center of hinge & Breaker Left hinge X1 (5H + ) or more (8H + ) or more Right hinge H Less than 10 10 or more Right hinge X2 170 or more (5H + 120) or more 0 or more (4H + 70) or more The figure above shows the relationship between the hinge and breaker viewed from the load side of the breaker. 44
mounting position internal accessory MCCB models Accessories NF MA NF GP MA HA L NF2 GP MA HA L NF400 GP HA L NF600/800 GP HA L NF1200 HA Shunt Trip Coil (STC) R1 & 2 R1 & 2 R1 & 2 R1 & 2 R1 & 2 Under Voltage Trip (UVT) R1 & 2 R1 & 2 R1 & 2 R1 & 2 R1 & 2 Auxiliary Switch (AUS) L1 & L2 L1 & L2 L1, L2 L1, L2, L3 L1, L2, L3 Alarm Switch (ALS) L1 & L2 L1 & L2 L1, L2 L1, L2, L3 L1, L2, L3 Auxiliary + Alarm Switch (AAS) L1 & L2 L1 & L2 L1, L2 L1, L2, L3 L1, L2, L3 Notes 1) It is NOT possible to install both UVT and STC in the same MCCB. 2) For NF600 onwards, it is possible to install up to a maximum of 4 Auxiliary. Switches or 2 Alarm switches. 3) UVT requires a voltage module that is installed on the right side lead wire terminal. right side Accessory compartment slot markings left side L = Left compartment; R = Right Compartment 45
r e s i s t a n c e & p o w e r t a b l e internal resistance & power loss Type NF-MA NF-GP NF-MA NF2-GP NF2-MA NF400-GP NF600-GP NF800-GP In A Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W 10A 15600 1.6 60000 6.0 7200 0.7 15A 20A 30A 40A 8700 6200 3570 1980 2.0 58000 1.3 6700 1.5 2.5 400 1.8 6000 2.4 3.2 32000 2.9 3 2.8 3.4 19000 3.0 1990 3.1 A 1480 3.7 16 4.1 1480 3.7 60A 1175 4.2 1200 4.3 75A 1120 6.3 1 6.2 80A 1010 7.1 980 6.5 A 820 8.2 770 7.7 125A 4 7.0 575 9.0 1A 400 9.0 525 11.8 160A 380 9.7 425 10.9 175A 3 10.7 395 12.1 200A 310 12.4 365 14.6 225A 260 13.2 335 16.9 2A 300A 3A 400A 196 12.3 162 14.6 148 18.1 120 19.2 0A 25.0 46 600A 90 32.4 700A 800A 70 60 34.3 38.4
internal resistance & power loss Type NF-HA NF2-HA NF400-HA NF600-HA NF800-HA NF1200-HA In A Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W 10A 310 3.2 15A 330 7.5 20A 17000 6.8 30A 80 7.7 40A 6000 9.6 A 3300 8.2 60A 2000 7.2 75A 80A 10 1200 8.4 8.8 A 9 9.5 125A 1A 160A 175A 200A 225A 775 12.1 725 16.3 680 17.4 595 18.1 575 23.0 535 27.0 2A 300A 3A 400A 251 15.7 188 16.9 188 23.0 138 22.1 0A 600A 220 51.0 210 75.6 700A 800A 120 58.8 105 67.2 47 0A 1200A 55 55.0 45 64.8
r e s i s t a n c e & p o w e r t a b l e internal resistance & power loss Type NF-L NF2-L NF400-L NF600-L NF800-L In A Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W Resistance uω Loss W 10A 310 3.2 15A 330 7.5 20A 170 7.0 30A 9000 8.1 40A 7000 11.2 A 40 11.3 60A 2200 7.9 75A 80A 1800 10 10.1 11.2 A 13 13.5 125A 1A 160A 175A 200A 225A 775 12.1 725 16.3 680 17.4 595 18.1 575 23.0 535 27.0 2A 300A 3A 400A 290 18.1 195 17.5 185 22.7 175 28.0 48 0A 600A 220 51.0 210 75.6 700A 800A 120 58.8 105 67.2
d c s h o r t c i r c u i t t a b l e DC voltage time constant 10ms or below Model Pole 48V Icu/Ics 125V Icu/Ics 2V Icu/Ics 400V Icu/Ics 5V Icu/Ics 600V Icu/Ics NF-MA 2 3 40 / 20 40 / 20 15 / 8 15 / 8 7.5 / 4 7.5 / 4 6 / 3 NF-GP 1 2 3 41 / 20 42 / 20 40 / 20 15 / 8 15 / 8 15 / 8 7.5 / 5 7.5 / 6 7.5 / 7 6 / 3 NF-MA 1 2 3 4 / 25 / 25 / 25 / 25 30 / 15 30 / 15 30 / 15 30 / 15 15 / 8 15 / 8 15 / 8 15 / 8 10 / 5 10 / 5 8 / 4 8 / 4 NF-HA 1 2 3 4 / / / / 80 / 40 80 / 40 80 / 40 80 / 40 40 / 20 40 / 20 40 / 20 40 / 20 25 / 13 25 / 13 18 / 9 18 / 9 NF-L 3 1 / 75 / / 25 35 / 18 NF2-GP 1 2 3 40 / 20 40 / 20 40 / 20 15 / 8 15 / 8 15 / 8 7.5 / 4 7.5 / 4 7.5 / 4 6 / 3 NF2-MA 1 2 3 4 / 25 / 25 / 25 / 25 30 / 15 30 / 15 30 / 15 30 / 15 15 / 8 15 / 8 15 / 8 15 / 8 10 / 5 10 / 5 8 / 4 8 / 4 NF2-HA 1 2 3 4 / / / / 80 / 40 80 / 40 80 / 40 80 / 40 40 / 20 40 / 20 40 / 20 40 / 20 25 / 13 25 / 13 18 / 9 18 / 9 NF2-L 3 1 / 75 / / 25 35 / 18 NF400-GP 3 4 80 / 40 80 / 40 40 / 20 40 / 20 20 / 10 20 / 10 13 / 8 13 / 8 10 / 5 10 / 5 NF400-HA 3 4 / / 80 / 40 80 / 40 40 / 20 40 / 20 25 / 13 25 / 13 18 / 9 18 / 9 NF400-L 3 1 / 75 / / 25 35 / 18 NF600 / NF800-GP 3 4 80 / 40 80 / 40 40 / 20 40 / 20 20 / 10 20 / 10 13 / 8 13 / 8 10 / 5 10 / 5 NF600 / NF800-HA 3 4 / / 80 / 40 80 / 40 40 / 20 40 / 20 25 / 13 25 / 13 18 / 9 18 / 9 49 NF800-L 3 1 / 75 / / 25 35 / 18 NF1200-HA 3 4 / / 80 / 40 80 / 40 40 / 20 40 / 20 25 / 13 25 / 13 18 / 9 18 / 9
s e l e c t i o n t a b l e motor circuit protection 3-phase motor 400V 440V / 60Hz Motor Capacity [kw at 400/440] Motor Full-load Current [A] MCCB In [A] 10 Interrupting Capacity Icu (ka) Sym 25 65 0.37 1.1 10 0.55 1.5 10 0.75 1.1 1.9 2.8 10 10 NF-MA 1.5 3.5 10 2.2 5 10 3 6.6 15 4 5.5 8.6 11.5 15 20 NF-MA NF-HA NF-L 7.5 15 30 11 15 22 29 40 40 NF-GP 18.5 36 22 42 60 30 56 75 37 68 45 83 125 55 75 98 135 1 200 NF2-GP NF2-MA NF2-HA NF2-L 90 158 225 110 193 2 132 160 232 282 300 3 NF400-GP NF400-HA NF400-L 200 349 400 2 430 600 NF600-GP NF600-HA 290 315 520 545 700 700 NF800-GP NF800-HA NF800-L 355 610 800
Short Circuit protection of electric motors The NF series circuit breakers are suitable to combine with motor starters. As defined in IEC 60947-4 standards, the starter switching device, usually a magnetic contactor, must be coordinated with the equipment capable of providing short circuit protection for circuit wiring/cables. The common starting methods for asynchronous squirrel-cage induction motors which the NF series can be used in combination are the direct-online-starters and star-delta-starters. The following selection tables, illustrating the above, shows the suitable breaker ratings that can accommodate motor starting currents. When more than one motor is connected to a branch circuit, the sum of the motor rated current equals to the rated current of the breaker. motor selection direct-online-starter Motor Ratings kw 0.18 0.37 0.55 0.75 1.1 1.5 2.2 3 3.7 4 5.5 HP 1/4 1/2 3/4 1 1.5 2 3 4 5 5.5 7.5 Motor Full-Load Current (A) 1.1 2.1 2.4 3.3 4.4 5.9 8.4 11 13.6 15.5 20 3 ø 220V Rated Current (A) Wire Size (mm 2 ) 10 2 10 2 10 2 10 10 15 20 30 30 30 2 2 2 2 2 5.5 5.5 5.5 Motor Full-Load Current (A) 0.65 1.2 1.4 1.9 2.5 3.4 4.8 6.4 7.9 9 11.5 3 ø 380V Rated Current (A) Wire Size (mm 2 ) 10 2 10 2 10 2 10 10 10 10 15 15 20 30 2 2 2 2 2 2 5.5 5.5 Motor Full-Load Current (A) 0.58 1.1 1.3 1.8 2.4 3.2 4.5 5.9 7.3 7.7 10.5 3 ø 415V Rated Current (A) Wire Size (mm 2 ) 10 2 10 10 10 10 10 10 15 15 15 20 2 2 2 2 2 2 2 2 2 5.5 Motor Ratings kw 7.5 11 15 18.5 22 30 37 45 55 75 90 HP 10 15 20 25 30 40 60 75 125 Motor Full-Load Current (A) 26.5 38 61 71 97 120 145 180 240 290 3 ø 220V Rated Current (A) Wire Size (mm 2 ) 60 14 75 22 38 38 125 60 1 60 175 80 200 225 125 400 200 0 200 Motor Full-Load Current (A) 15 22 29 36 41 56 70 84 104 143 170 3 ø 380V Rated Current (A) Wire Size (mm 2 ) 30 5.5 8 60 14 75 22 38 38 1 60 125 60 1 80 200 225 125 51 Motor Full-Load Current (A) 14 20.5 27 33 38 52 65 77 95 130 154 3 ø 415V Rated Current (A) Wire Size (mm 2 ) 30 5.5 60 75 8 14 22 75 22 38 125 125 60 60 1 80 175 200 Please note that the breaker selection shown in the tables are subjected to the following: only 1 motor to be installed in the circuit and the starting current is less than 6 times of motor full load current.
s e l e c t i o n t a b l e motor selection direct-online-starter Motor Ratings kw 110 132 160 200 2 315 HP 1 180 220 270 340 420 Motor Full-Load Current (A) 349 411 0 625 780 980 3 ø 220V Rated Current (A) Wire Size (mm 2 ) 600 200 700 325 800 325 Motor Full-Load Current (A) 202 238 290 360 4 570 3 ø 380V Rated Current (A) Wire Size (mm 2 ) 400 1 400 200 0 200 600 800 0 200 325 325 Motor Full-Load Current (A) 185 218 260 330 415 520 3 ø 415V Rated Current (A) Wire Size (mm 2 ) 300 1 400 0 600 700 800 200 200 200 325 325 motor selection star-delta-starter Motor Ratings kw 5.5 7.5 11 15 18.5 22 30 37 45 55 75 HP 7.5 10 15 20 25 30 40 60 75 Motor Full-Load Current (A) 20 28.5 38 61 71 97 120 145 180 240 3 ø 220V Rated Current (A) Wire Size (mm 2 ) 8 8 75 22 22 125 38 1 38 200 60 225 60 300 80 400 80 400 Motor Full-Load Current (A) 11.5 15 22 29 35 41 56 70 84 104 143 3 ø 380V Rated Current (A) Wire Size (mm 2 ) 30 3.5 30 5.5 8 60 14 75 22 38 38 1 175 225 60 225 80 52 Motor Full-Load Current (A) 10.5 14 20.5 27 33 41 52 65 77 95 130 3 ø 415V Rated Current (A) Wire Size (mm 2 ) 30 3.5 30 5.5 8 60 14 75 22 22 38 1 175 200 60 225 80 Please note that the breaker selection shown in the tables are subjected to the following: only 1 motor to be installed in the circuit and the starting current is less than 6 times of motor full load current.
motor selection star-delta-starter Motor Ratings kw 90 HP 125 110 1 132 180 160 220 Motor Full-Load Current (A) 290 349 411 0 3 ø 220V Rated Current (A) Wire Size (mm 2 ) 0 1 600 1 800 200 0 2 Motor Full-Load Current (A) 170 202 238 290 3 ø 380V Rated Current (A) Wire Size (mm 2 ) 300 400 125 400 125 600 1 Motor Full-Load Current (A) 154 185 218 260 3 ø 415V Rated Current (A) Wire Size (mm 2 ) 300 80 300 400 125 400 1 Please note that the breaker selection shown in the tables are subjected to the following: only 1 motor to be installed in the circuit and the starting current is less than 6 times of motor full load current. installation Model NF NF-2 NF400-600 NF800-1200 Operating Voltage U<440V U<600V U<440V U<600V U<440V U<600V U<440V U<600V safety distance requirements Insulation, Insulated Bars or Painted Sheetmetal (mm) A B1 B2 25 75 80 40 55 40 55 Bare/Unpainted Sheetmetal (mm) A B1 B2 25 30 80 90 45 55 45 55 53
s e l e c t i o n t a b l e terminal-tightening torque To ensure the correct operation of the MCCB, it is essential to make a proper cable or busbar termination to the MCCB. It is recommended that the supplied screws be used to connect the cables or busbars to the breaker terminals and tightened to the torque, as shown in the table below. terminals for cable lugs connection Cable size mm 2 tightening range* Nm Bolt/Screw Screw Model Min Max I II Size Type NF 1.6 ø 22 1.8 ~ 2.0 N/A M5 screw Pan head NF 1.6 ø 2.5 ~ 3.5 N/A M8 screw Screw NF2 38 1 2.5 ~ 3.5 N/A M8 screw Screw NF400 1 2 x N/A 10 ~ 14 M12 bolt x 2 Bolts NF600 2 x 1 2 x 200 N/A 10 ~ 14 M12 bolt x 2 Bolts NF800 N/A N/A N/A N/A N/A N/A NF1200 N/A N/A N/A N/A N/A N/A terminals for copper busbar connection Copper busbar size mm 2 tightening range* kgf-cm Bolt/Screw Model Max t = Max w = I II Size NF 5 12.5 1.8 ~ 2.0 N/A M5 screw NF 5 16.5 2.5 ~ 3.5 N/A M8 screw NF2 7 23 2.5 ~ 3.5 N/A M8 screw NF400 8 25 N/A 10 ~ 14 M12 bolt x 2 NF600 8 40 N/A 10 ~ 14 M12 bolt x 2 NF800 10 44 N/A 10 ~ 14 M12 bolt x 2 54 NF1200 * Note Copper busbar 17 44 N/A 10 ~ 14 Caution 1) Do not over tighten. If the tightening torque is exceeded, bolts/screws and copper bars may be damaged. 2) Failure to secure a terminal connection may cause an electrical fault. Make sure all terminal connections are tightly secured. M12 bolt x 2
c o n n e c t i o n d a t a terminal-cable & copper busbar sizes MCCB Rated Current In (A) ISO Square (mm 2 ) CNS Standard Square (mm 2 ) UL Standard AWG or kcmil at 75 C 8 In > 0 1 1.2 ø 14 AWG 12 In > 8 1.5 1.6 ø 14 AWG 15 In > 12 2.5 1.6 ø 14 AWG 20 In > 15 2.5 2.0 ø 12 AWG 25 In > 20 4 5.5 10 AWG 32 In > 25 6 8 10 AWG In > 32 10 14 8 AWG 65 In > 16 14 6 AWG 85 In > 65 25 22 4 AWG In > 85 35 38 3 AWG 115 In > 35 2 AWG 130 In > 115 1 AWG 1 In > 130 60 1/0 AWG 175 In > 1 70 80 2/0 AWG 200 In > 175 95 3/0 AWG 225 In > 200 95 125 4/0 AWG 2 In > 225 120 125 2 MCM 275 In > 2 1 1 300 MCM 300 In > 275 185 200 3 MCM 3 In > 300 185 2 0 MCM 400 In > 3 240 2 x 2 x 3/0 AWG 0 In > 400 2 x 1 2 x 1 2 x 2 MCM 630 In > 0 2 x 185 2 x 200 2 x 3 MCM 800 In > 630 2 x 240 2 x 2 3 x 300 MCM 0 In > 400 2 x (30 x 5) 2 x (30 x 5) 2 x 2 MCM 55 630 In > 0 2 x (40 x 5) 2 x (40 x 5) 2 x 3 MCM 800 In > 630 2 x ( x 5) 2 x ( x 5) 3 x 300 MCM
M C B BHQ series fixed type Ampere Frame (AF) Model Code BHQ-1 BHQ-2 BHQ-3 Number of Pole (P) 1 2 3 Rated Voltage: Ue Vac Rated Current: In (A) at Ambient Temperature: C 240 / 415 240 / 415 240 / 415 10 15 20 30 40 60 75 80 10 15 20 30 40 60 75 80 10 15 20 30 40 60 75 80 Rated Ultimate Short Circuit Breaking Capacity: I cu (ka) IEC 60947-2 240V/415V 6 / 6 6 / 6 6 / 6 a 25 75 b 95 95 95 Weight c ca bb aa kg 58.5 58.5 58.5 77.5 77.5 77.5 0 25 0.15 0.31 0.46 56
BHP series plug-in type Ampere Frame (AF) Model Code BHP-1 BHP-2 BHP-3 Number of Pole (P) 1 2 3 Rated Voltage: Ue Vac Rated Current: In (A) at Ambient Temperature: C 240 / 415 240 / 415 240 / 415 10 15 20 30 40 60 75 80 10 15 20 30 40 60 75 80 10 15 20 30 40 60 75 80 Rated Ultimate Short Circuit Breaking Capacity: I cu (ka) IEC 60947-2 240V/415V 6 / 6 6 / 6 6 / 6 a 25 75 a aa ca c b c 74 74 74 60.5 60.5 60.5 b Weight ca bb aa kg 77.5 77.5 77.5 0 25 0.13 0.26 0.39 57
M C B c h a r a c t e r i s t i c s & d i m e n s i o n s BHQ & BHP series operating characteristics BHQ & BHP series temperature characteristics 58
BHQ series fixed type front connection 1-pole 2-pole 3-pole BHP series plug-in type front connection 59 1-pole 2-pole 3-pole
60 N O T E S
what is quality? We define quality as products having the highest level of reliability, performance and design. Our aim for quality is to meet the requirements of other global markets and to exceed the current international standards. With our in-house design and development team, our range of products are currently manufactured in accordance and compliance to various international standards. our road to quality Manufacturer Hwa Shih Electric Industrial Co Ltd 14, 16 Lane 2, Pa Teh Road, Yinko District, New Taipei City, Taiwan R.O.C. Tel : +886 2 2678 3675 Fax : +886 2 2678 0564 Email : hwashih@ms61.hinet.net