Ratings for Switching AC Motors AC-2, AC-3, AC / /
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1 Bulletin S-C/S-C IEC Safety Contactors Overview/Product Selection Product Selection -Pole AC- and DC-Operated Contactors Bulletin S-C/S-C IEC Safety Contactors Mechanically linked N.C. auxiliary contacts Front-mounted auxiliary contacts Gold bifurcated Permanently fixed Protective cover to prevent manual operation Red contact housing foreasy identification Incorporates IEC -- Mechanically Linked symbol AC and DC operating coils SUVA Third-Party certification Bulletin S-C/S-C safety contactors provide mechanically linked positively guided contacts, required in feedback circuits of modern safety applications. The mechanically linked N.C. auxiliary contacts will not change state when a power pole welds. In addition, the gold-plated bifurcated auxiliary contacts are ideally suited for low-energy applications or feedback control circuits with multiple series-connected N.C. auxiliary contacts. Your order must include: cat. no. of the contactor specified with coil voltage code and, if required, cat. no. of any accessories and/or replacement coils. Ratings for Switching AC Motors AC-, AC-, AC- Table of Contents Product Selection... this page Accessories... - Approximate Dimensions... - Standards Compliance EN CSA C. No. UL EN/IEC - IEC -- Annex H Mirror Contacts IEC -- Annex L Mechanically Linked Contacts Meets the material restrictions for European Directive //IEC-EU-RoHS Certifications SUVA Third-Party Certified CE Marked culus Listed (File No. E; Guide NLDX, NLDX) Aux. Contacts I e [A] -Phase kw ( Hz) Hp ( Hz) V/ -Phase -Phase AC- AC- V V V V V V V V V V N.O. N.C. Cat. No. / -/ -/ S-C BC S-C BC... / -/ S-C BC S-C BC.... S-C BC S-C BC. -/ S-C BC S-C BC -/ S-C BC S-C BC./. S-C BC S-C BC -/ S-C BC S-C BC. S-C BC S-C BC S-C BC S-C BC -/ S-C BC S-C BC S-C BC S-C BC For other contact configurations and full product details, please contact your local Rockwell Automation sales office or Allen-Bradley distributor. If standard cross-stamped front-mount auxiliary contacts are required, remove the letter "B" before the letter "C" in the cat. no. Example: Cat. No. S- C BC becomes Cat. No. S-C C. Bifurcated front-mount auxiliary contacts on Cat. Nos. S-C C conform to mirror contact performance only. Coil voltage code and terminal position see page - Cat. No. S-C C Line Side Cat. No. S-CU C Load Side - Publication A-CAA-EN-P
2 Bulletin S-C/S-C IEC Safety Contactors Product Selection/Assignment of Contacts Coil Voltage Code and Terminal Position The Cat. No. as listed is incomplete. Select a coil voltage code from the table below to complete the Cat. No. Example: V, Hz: Cat. No. S-C BC becomes Cat. No.S-CDBC. [V] AC, Hz R K V W X Y KP D P S KG L F AC, Hz Q J V X KP D KG H L AC, / Hz KJ KY KP KD KG KL KL Not available on S/S-C contactors [V] AC, Hz VA T N G B M C AC, Hz A T I E N B C AC, / Hz KF KA KN KB [V] Standard ZR ZQ ZJ ZW ZY ZZ ZB ZG ZE ZD ZP ZS ZA ZF ZT with Integrated Diode DJ S-C C Electronic with Integrated DC EQ EJ EY ED EA Diode S-C C with Integrated Diode DR DQ DJ DW DY DZ DB DG DE DD DP DS DA DF DT Coil Terminal Position All contactors are delivered with the coil terminals located on the line side. For load side coil terminations, insert a U prior to the coil voltage code. Example: Cat. No. S-CUDBC. Assignment of Contacts Safety Contactors with Main Contacts and Standard Front-Mount Auxiliary Contacts A A A K A S-C C C C K A S-C C C C K A S-C C C C K A K A K A A A A S-C C C C S-C C C C S-C C C C Publication A-CAA-EN-P -
3 K A A R R R R K A A S-C C C C S-C C C C K A A K A A S-C C C C S-C C C C Safety Contactors with Main Contacts and Standard Front-Mount Auxiliary Contacts Safety Reversing Contactors with Main Contacts and Standard Front-Mount Auxiliary Contacts Assignment of Contacts - Bulletin S-C/S-C IEC Safety Contactors S-C C C C K A A K A A K A A K A A S-C C C C S-C C C C S-C C C C K A A K A A K A A K A A S-C C C C K A A K A A S-C C C C K A A K A A Publication A-CAA-EN-P
4 Bulletin S-C/S-C IEC Safety Contactors Assignment of Contacts Safety Contactors with Main Contacts and Bifurcated Front-Mount Auxiliary Contacts K A K A K A A A A S-C BC C BC S-C BC C BC S-C BC C BC A A A K K K A A A S-C BC C BC S-C BC C BC S-C BC C BC A A A K K K A A A S-C BC C BC S-C BC C BC S-C BC C BC Safety Contactors with Main Contacts and Bifurcated Front-Mount Auxiliary Contacts A K A S-C BC C BC A R K A R S-C BC C BC A K A S-C BC C BC A K A R R S-C BC C BC Publication A-CAA-EN-P -
5 Bulletin /-K, /-C, /-D, S/S-C, S-D -KR /-K /-C, S/S-C * * Coil Type : Conventional X X X X X X X X X X X X X X X Electronic EI AC- Active Power Load ( Hz); Ambient temperature C V [A] () V [A] () V [A] V [kw] I e V [kw]... V [kw].. V [kw] V [kw].. V [kw] V [kw] Ambient temperature C V [A] V [A] V [A] V [kw]... I e V [kw]... V [kw].. V [kw] V [kw].. V [kw] V [kw] Switching of -phase Motors; ( Hz) Ambient temperature C, AC-, AC- V [A] V [A] V [A]..... V [A]..... V [A]..... V [A]..... V [A] V [kw] V [kw] V [kw] V [kw]..... V [kw] V [kw] V [kw] Load Carrying Capacity per UL/CSA General Purpose Current (enclosed) [A] Rated power (enclosed) V [A] phase V [A]. V [Hp] / /..... V [Hp] /... V [A] V [A] V [A] phase V [A].... V [Hp]... V [Hp]... V [Hp].. V [Hp].. - Publication A-CAA-EN-P
6 Bulletin /-K, /-C, /-D, S/S-C, S-D /-C, S/S-C /-D, S-D * * X X X X X X X X X X X X X X X X X AC- Active Power Load ( Hz); Ambient temperature C Ambient temperature C Switching of -phase Motors; ( Hz) Ambient temperature C, AC-, AC- () () () () () () () () () () () () () () () (). Load Carrying Capacity per UL/CSA General Purpose Current (enclosed) Rated power (enclosed) V: values in ( ) AC- and AC- lifespan - % Publication A-CAA-EN-P -
7 Bulletin /-K, /-C, /-D, S/S-C, S-D /-K /-C, S/S-C Conventional X X X X X X X X X X X Coil Type : Electronic EI Switching of -phase Motors, (Hz); Ambient temperature C, AC- V [A].... V [A].... V [A]... V [A]... V [A]... V [A]... V [A] V [kw].... V [kw].... V [kw]..... V [kw].... V [kw].... V [kw]..... V [kw] AC- at approximately, operations V [A] V [A] /V [A] V [A] V [A].... V [A] V [kw] V [kw] V [kw] V [kw] V [kw] V [kw]... V [kw] Max. switching frequency Ops/h Wye-Delta ( Hz) V [Hp]. ½ ½ V [Hp]. ½ V [Hp]. V [Hp]. UL/CSA Elevator Duty V [A] V [A] V [A] V [A] V [Hp] ½ ½ V [Hp] ½ V [Hp] ½ V [Hp] ½ Star-Delta Starting ( Hz) V [A]. V [A]. V [A]... V [A]... V [A]... V [A].... V [A] V [kw].... V [kw]..... V [kw].. V [kw].. V [kw]... V [kw].... V [kw] Power ratings at Hz: Preferred values according to IEC - Approval pending on Cat. No. -D D. - Publication A-CAA-EN-P
8 Bulletin /-K, /-C, /-D, S/S-C, S-D /-C, S/S-C /-D, S-D X X X X X X X X X X X X X X X Switching of -phase Motors, ( Hz); Ambient temperature C, AC- () () () () () () () () () () () () () () () () AC- at approximately, operations.... Wye-Delta ( Hz) UL/CSA Elevator Duty.. TBD.. TBD.. TBD.. TBD TBD TBD TBD TBD Star-Delta Starting ( Hz) () () () () () () () () () () () () V: Values in ( ) AC- and AC- lifespan -% Approval pending on Cat. No. -D D. Publication A-CAA-EN-P -
9 Bulletin /-K, /-C, /-D, S/S-C, S-D Coil Type : /-K /-C, S/S-C Conventional X X X X X X X X X X X Electronic EI Switching of Power Transformers, AC-a ( Hz) Inrush Current Rated transformer current = n V [A] V [A] V [A] V [A] V [A] V [A]..... n = V [A] V [kva] V [kva] V [kva] V [kva] V [kva] V [kva] V [kva] n = V [A] n = V [A] Hz Peak Inrush/peak rated transformer current n = [A]..... V [kva] V [kva] V [kva] V [kva] V [kva] V [kva] Hz Peak Inrush/peak rated transformer current n = [A] V [kva] V [kva] V [kva] V [kva] V [kva] V [kva] Hz Peak Inrush/peak rated transformer current n= [A] V [kva] V [kva] V [kva] V [kva] V [kva] V [kva] Publication A-CAA-EN-P
10 Bulletin /-K, /-C, /-D, S/S-C, S-D /-C, S/S-C /-D, S-D X X X X X X X X X X X X X X X Switching of Power Transformers, AC-a ( Hz) Hz Peak Inrush/peak rated transformer current Hz Peak Inrush/peak rated transformer current Hz Peak Inrush/peak rated transformer current Publication A-CAA-EN-P -
11 Bulletin /-K, /-C, /-D, S/S-C, S-D Coil Type : Switching of -phase Capacitors, AC-b ( Hz) /-K /-C, S/S-C * * Conventional X X X X X X X X X X X X X Electronic EI V [kvar]. V [kvar]. V [kvar]. Single capacitor C V [kvar]. V [kvar]. V [kvar]. V [kvar] V [kvar]... V [kvar]... V [kvar].. C V [kvar]. V [kvar]. V [kvar]. V [kvar] V [kvar]. V [kvar]. V [kvar] Group capacitors C V [kvar] V [kvar] V [kvar] V [kvar] V [kvar].. V [kvar].. V [kvar] C V [kvar] V [kvar] V [kvar] V [kvar] Hz Single Capacitor C V [kvar]. V [kvar]. V [kvar] V [kvar] Hz Group Capacitors C V [kvar].. V [kvar].. V [kvar] V [kvar] Switching of Lamps Gas discharge lamps AC-a, C open [A].. enclosed [A].... Individually compensated: Max. capacitance at expected Short-circuit current of ka [μf] ka [μf] ka [μf] Filament AC-b /V [A] Switching of Low Inductive Loads in Home Appliances and Similar Applications per IEC ( Hz) V [A] AC-a V [A] V [A] Switching of Motor Load for Home Appliances ( Hz) AC-b V [A]. V [A] V [A].. Inductance of leads between capacitors in parallel: min. μh (-C C contactors: min μh) - Publication A-CAA-EN-P
12 Bulletin /-K, /-C, /-D, S/S-C, S-D /-C, S/S-C /-D, S-D * * X X X X X X X X X X X X X X X X X Switching of -phase Capacitors, AC-b ( Hz) Hz Single Capacitor C Hz Group Capacitor C Switching of Lamps Individually compensated: Max. capacitance at expected Switching of Low Inductive Loads in Home Appliances and Similar Applications per IEC ( Hz) Switching of Motor Load for Home Appliances ( Hz) Publication A-CAA-EN-P -
13 Bulletin /-K, /-C, /-D, S/S-C, S-D /-K /-C, S/S-C * * Conventional X X X X X X X X X X X X X Coil Type : Electronic EI Switching of Hermetically Sealed Cooling Compressor Motors - manual reset of overload release ( Hz) V [A] AC-a V [A] V [A] - automatic reset of overload release V [A].. AC-b V [A].. V [A].. Switching of DC Loads Non-inductive or slightly inductive loads or resistance furnaces DC-, C V [A] /V [A] / /. /. pole V [A]. V [A] V [A] V [A] /V [A] poles in series V [A] V [A]... V [A].... V [A] /V [A] poles in series V [A] V [A] V [A] Shunt-wound Motors Starting, reverse current braking, reversing, stepping DC-, C V [A] /V [A] poles in series V [A] V [A]... V [A] Series-wound Motors Starting, reverse current braking, reversing, stepping DC-, C V [A] /V [A] poles in series V [A]. V [A]... V [A] Short Time Withstand I CW, C s [A] Resistance and Power Dissipation Main current circuit resistance [mω] Power dissipation by all circuits at I e AC-/V [W] Total power dissipation At I e AC-/V AC [W] DC [W] Lifespan Mechanical AC control [Mil. operations] Mechanical DC control [Mil. operations] Electrical AC- ( V) [Mil. operations] Weight AC DC Non- Rev. Rev. Non- Rev. Rev. kg (lbs.) kg (lbs.) kg (lbs.) kg (lbs.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.) - Publication A-CAA-EN-P
14 Bulletin /-K, /-C, /-D, S/S-C, S-D /-C, S/S-C /-D, S-D * * X X X X X X X X X X X X X X X X X Switching of Hermetically Sealed Cooling Compressor Motors - manual reset of overload release ( Hz) - automatic reset of overload release Switching of DC Loads Non-inductive or slightly inductive loads or resistance furnaces DC-, C Shunt-wound Motors Starting, reverse current braking, reversing, stepping DC-, C Series-wound Motors Starting, reverse current braking, reversing, stepping DC-, C Short Time Withstand I CW, C Resistance and Power Dissipation Total power dissipation.... (.) (.) Lifespan Weight. (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.). (.) Values in brackets refer to electronic coil (EI) version.. (.) [. (.)]. (.). (.). (.). (.). (.). (.). (.). (.). (). (). (.) [. (.)]. (.). (.). (.). (.). (.). (.). (.). (.). (). () Publication A-CAA-EN-P -
15 Bulletin /-K, /-C, /-D, S/S-C, S-D -KR /-K /-C, S/S-C Coil Type : Conventional X X X X X X X X X X X X X X X X X Conductor Cross Sections - Main Contacts Terminal type Electr. EI () conductor [mm] () conductors [mm] () conductor [mm] () conductors [mm] b max. [mm] c max. [mm] s max. [mm] Ø min. [mm] Recommended torque [N m] Cross section per UL/CSA [AWG] Recommended torque [lb-in]... With terminal lug kit Cross section per UL/CSA [AWG] Recommended torque [lb-in] With Frame Terminal Block top opening [mm] bottom opening [mm] top opening [mm] bott. opening [mm] b max. s top s bottom [mm] Recommended torque [N m] Cross section per UL/CSA top [AWG] bottom [AWG] Recommended torque [lb-in] Pozidriv No. / Blade No. screw Pozidriv No. / Blade No. screw Hexagonal socket screw Fine- or coarse-stranded only - Publication A-CAA-EN-P
16 Bulletin /-K, /-C, /-D, S/S-C, S-D /-D, S-D X X X X X X X X X X X X. x x.. -DL -DL -DL -DL MCM (x) MCM (X) / MCM (X) / MCM -DTB -DTB / AWG AWG MCM AWG MCM AWG MCM Pozidriv No. / Blade No. screw Pozidriv No. / Blade No. screw Hexagonal socket screw Hexagonal screw Publication A-CAA-EN-P -
17 Bulletin /-K, /-C, /-D, S/S-C, S-D Short-Circuit Coordination Data Coil Type : /-K /-C, S/S-C * * * * Conventional X X X X X X X X X X X X X X X X X X Electronic El Short Circuit Coordination (Max. Fuse or Circuit Breaker Rating) Per IEC -- (contactor and fuses only) DIN Fuses - gg, gl ka Available Fault Current Type "" (V) [A] Type "" (V) [A] Type "" (V) [A] BS Fuses ka Available Fault Current Type "" (V) [A] TBD Type "" (V) [A] TBD Per UL and CSA. No. (contactor and fuses or circuit breaker only) UL Class K and RK Fuses ka Available Fault Current UL Listed Combination (V) [A] UL Class K and RK Fuses ka Available Fault Current UL Listed Combination (V) [A] UL Class L Fuses ka Available Fault Current UL Listed Combination (V) [A] UL Class L Fuses ka Available Fault Current UL Listed Combination (V) [A] UL Class L Fuses ka Available Fault Current UL Listed Combination (V) [A] UL Class CC and CSA HRCI-MISC Fuses ka Available Fault Current UL Listed Combination (V) [A] UL Class J and CSA HRCI-J Fuses ka Available Fault Current UL Listed Combination (V) [A] UL Class CC and CSA HRCI-MISC Fuses ka Available Fault Current UL verified combination to IEC -- "Type " [A] UL Class J and CSA HRCI-J Fuses ka Available Fault Current UL verified combination to IEC -- "Type " [A] TBD UL Inverse-Time Circuit Breaker ka Available Fault Current UL Listed Combination (V) [A] UL Listed Combination (V) [A] UL Inverse-Time Circuit Breaker ka Available Fault Current UL Listed Combination (V) [A] UL Inverse-Time Circuit Breaker ka Available Fault Current UL Listed Combination (V) [A] UL Inverse-Time Circuit Breaker ka Available Fault Current UL Listed Combination (V) [A] TBD UL Inverse-Time Circuit Breaker ka Available Fault Current UL Listed Combination (V) [A] UL Inverse-Time Circuit Breaker ka Available Fault Current UL Listed Combination (V) [A] UL Inverse-Time Circuit Breaker ka Available Fault Current UL Listed Combination (V) [A] TBD A max. fuse for Type coordination. See for complete short-circuit current ratings. - Publication A-CAA-EN-P
18 Bulletin /-K, /-C, /-D, S/S-C, S-D /-D, S-D / X X X X X X X X X X X ka Available Fault Current ka Available Fault Current ka Available Fault Current ka Available Fault Current / ka Available Fault Current ka Available Fault Current ka Available Fault Current ka Available Fault Current ka Available Fault Current ka Available Fault Current ka Available Fault Current / ka Available Fault Current ka Available Fault Current / ka Available Fault Current ka Available Fault Current ka Available Fault Current ka Available Fault Current ka Available Fault Current To be determined. Publication A-CAA-EN-P -
19 Bulletin /-K, /-C, /-D, S/S-C, S-D Coil Type - /-K Publication A-CAA-EN-P /-C, S/S-C * * * * Conventional X X X X X X X X X X X X X X X X X X Electronic EI Operating Limits Hz, Hz, pick-up [x Us] / Hz dropout [x Us] DC (conventional) DC (electronic) pick-up [x Us] dropout [x Us] pick-up [x Us].. dropout [x Us]. Coil Consumption Hz, Hz, pick-up [VA/W] / / / / / / / / / Hz hold-in [VA/W] /. /. / / /. /. /. / DC (conventional) DC (electronic) pick-up [W] cold., warm hold-in [W] cold., warm pick-up (avg/peak) [W] / / / hold-in [W]... Operating Times closing delay [ms] AC opening delay [ms] With RC module opening delay [ms] DC closing delay [ms] (conventional) opening delay [ms] With integ. diode With external diode opening delay [ms] V V opening delay [ms] DC (electronic) closing delay [ms] opening delay [ms] Max. Ripple ± % Min. OFF time [ms] For,,, and V DC coils /-D, S-D / / Conventional X X Coil Type Electronic EI X X X X X X X X X Operating Limits Hz, Hz, pick-up [x Us] / Hz dropout [x Us] DC control pick-up [x Us] dropout [x Us] Coil Consumption Hz, Hz, pick-up [VA/W] / / / / / Hz hold-in [VA/W] / / / / DC control pick-up [W] hold-in [W] Operating Times AC closing delay [ms] opening delay [ms] With RC module opening delay [ms] DC closing delay [ms] opening delay [ms] Integrated diode opening delay [ms] External diode opening delay [ms] Electronic coil drives are designed to minimize power requirements, but this control may exhibit a higher inrush ( W, < ms) when energizing. This must be taken into account for the proper sizing of supply devices, all-or-nothing relays and cross-sections of coil supply lines. Please contact your local Rockwell Automation sales office or Allen-Bradley distributor for detailed information.
20 Bulletin /-K, /-C, /-D, S/S-C, S-D Auxiliary Contacts, Auxiliary Contact Blocks, and Pneumatic Timers Switching of AC Loads Internal -K -C, S-C -D, S-D Internal Frontmounted Frontmounted Frontmounted (Bifurcated) Sidemounted Convent'l Side-mounted Bifurcated Electronically compatible at C [A]. AC- I th at C [A] at V AC- at rated voltage of V [A]. /V [A]. V [A]. V [A]... ( ma) V [A] at V [A].. V V [A]... V [A] V [A].... Switching of DC Loads DC- L/R< ms resistive loads at V DC [A] V DC [A].. V DC [A] V DC [A] V DC [A] DC- L/R< ms inductive loads with economy resistor in series at V DC [A] V DC [A]... V DC [A]... V DC [A] V DC [A] DC- switching electromagnets at V DC [A]... V DC [A]... ( ma) V DC [A] at V DC [A] V V DC [A] Fuse gg Short-circuit protection with no welding of contacts per IEC -- [A] [A] Protective Separation per IEC -, Annex N Min. switching capacity according to IEC -- V/ ma V/ ma between load and auxiliary circuit V between load and auxiliary circuit V between load and auxiliary circuit V V/ ma V/ ma V/ ma V/ ma V/ ma Failure rate V/ ma ( Mio. ops.) <- (less than failure to Mio. operations) V/ ma Load Carrying Capacity per UL/CSA Rated voltage AC [V] max. max. max. max. General Continuous rating C [A]. purpose Heavy pilot duty Switching capacity AC [A] A B A. (A ) Rated voltage DC [V] max. max. max. max. Switching capacity DC [A] Q P Q Q Standard pilot duty (P ) Standard pilot duty (Q ). Publication A-CAA-EN-P -
21 Bulletin /-K, /-C, /-D, S/S-C, S-D General -K -C, S-C -D, S-D Rated Isolation Voltage U i IEC [V] UL, CSA [V] Rated Impulse Voltage Withstand U imp [kv] Rated Voltage U e AC / Hz [V],,,,,,,,,,,,,,,,,,,,,, DC [V],,,,,,,,,,,, Insulation Class of the Coil Class F per IEC Class insulation system per UL Class F per IEC Class B per VDE, Table Rated coil frequency AC / Hz, DC AC / Hz, DC AC Hz, / Hz, DC Ambient Temperature Storage [ C] Operation at rated voltage [ C] at C % current reduction against C values Climatic Withstand IEC -- IEC -- / - / - IEC -- Max. Altitude of Installation Site [m] NN, per IEC - NN, per IEC - NN, per IEC - Protection Class IPX IPX IP IEC / DIN Single contactor cover IP IEC / DIN Contactor with frame terminal block IP IEC / DIN Auxiliary contact IPX IP IEC / DIN Protection against Accidental Contact Finger and back-of-hand proof per VDE, part Finger and back-of-hand proof per VDE, part Resistance to Shock IEC - IEC -- IEC -- Resistance to Vibration IEC - IEC -- IEC -- Mechanically Linked Contacts IEC --, Annex L Mirror Contacts IEC - Annex F Standards Compliance Certifications -K (on main device) -K + -KF IEC/EN -/--/--; UL ; CSA.. No. CE, culus CCC - / S-C C + -FA/- FB/-FC, (except L, L), - / S-C C + -FAB/-FBB/- FCB - / S-C C + -FA/- FB/-FC, (except L, L), - / S-C C + -SA/SB, - / S-C C + -FAB/-FBB/- FCB IEC/EN -/--/--; UL ; CSA.. No. CE, culus, CCC -D + x -DS- S-D + x S-DS- IEC/EN -/--/--; UL ; CSA.. No. CE, culus, CCC - Publication A-CAA-EN-P
22 Bulletin -K/-K, -C/-C, -D/-D, -G Electrical Life in Utilization Category Bulletin -C/-C IEC contactors are designed for superior performance in a wide variety of applications. When selecting IEC products, the user must give consideration to the specific load, utilization category and required electrical life of the application. The life-load curves shown here are based on Rockwell Automation tests according to the requirements defined in IEC --. Since contact life in application is dependent on environmental conditions and duty cycle, actual application contact life may vary from that indicated by the curves shown here. To find the contactor s estimated electrical life, follow these guidelines:. Identify the appropriate utilization category from the table below.. Choose the graph for the utilization category selected.. Locate the intersection of the life-load curve for the appropriate contactor with the application s operational current (I e ) found on the horizontal axis.. Read the estimated contact life along the vertical axis. Contact Life for Mixed Utilization Categories AC- and AC-: In many applications, the utilization category cannot be defined as either purely AC- or AC-. In those applications, the electrical life of the contactor can be estimated from the following equation: Lmixed = Lac/[ + Pac*(Lac/Lac )], where: Lmixed = Approximate contact life in operations for a mixed AC-/AC- utilization category application Lac = Approximate contact life in operations for a pure AC- utilization category (from the AC- life-load curves) Lac = Approximate contact life in operations for a pure AC- utilization category (from the AC- life-load curves) Pac = Percentage of AC- operations AC- AC- AC- AC- AC- Test Conditions Resistance Furnaces: Non inductive or slightly inductive loads Slip-ring motors: Starting and reversing Squirrel-cage motors: Starting and stopping of running motors Squirrel-cage motors: Starting, plugging, inching Soleniods: Contactors, valves and lifting magnets I e < A I e > A I e < A I e > A Making Breaking I/I e U/U e cosφ I c /I e U r /U e cosφ I e Rated operational current I Making Current U e Rated voltage Ic Breaking Current U r Recovery voltage U Off-load voltage Plugging is understood as stopping or reversing the motor rapidly by reversing motor primary connections while the motor is running. Inching (jogging) is understood as energizing a motor once or repeatedly for short periods to obtain small movements of the driven mechanism. - Publication A-CAA-EN-P
23 Bulletin -K/-K IEC Miniature Contactors Bulletin -K/-K Life-Load Curves Electrical life; U e = V AC AC- Switching of squirrel-cage motors while starting AC- Non- or slightly inductive loads, resistance furnaces Contact Life (millions of operations). -K -K -K. Electrical life; U e = V AC AC- Stepping of squirrel-cage motors -K; -K Rated current Ie AC- [A] (Dashed curves AC- only, open) -K Contact Life (millions of operations)... Rated current Ie AC- [A] Publication A-CAA-EN-P -
24 Bulletin -C/-C Life-Load Curves AC- C Non- or slightly inductive loads, resistance furnaces; U e = V E+ C C C C C C C C C C C C / C Operating cycles E+ C E+ AC- Switching of slip-ring motors; U e = V E+ C C C C C C C Rated operating current I e AC- [A] C C C C Operating cycles E+ E+ Rated operating current I e AC- [A] - Publication A-CAA-EN-P
25 Bulletin -C/-C Life-Load Curves AC- Switching of squirrel-cage motors while starting; U e = V E+ C C C C C C C C C C C Operating Cycles E+ E+ Rated Operating Current I e AC- [A] Switching of squirrel-cage motors while starting; U e = V E+ C C C C C C C C C C C Operating Cycles E+ E+ Rated Operating Current I e AC- [A] Publication A-CAA-EN-P -
26 Bulletin -C/-C Life-Load Curves AC- Switching of squirrel-cage motors while starting; U e = V E+ C C C C C C C C C C C Operating Cycles E+ E+ AC- Switching of squirrel-cage motors; U e = V Operating Cycles E+ E+ E+ C C C C C C C C C C Rated Operational Current I e AC- [A] C E+ Rated Operating Current I e AC- [A] - Publication A-CAA-EN-P
27 Bulletin -C/-C Life-Load Curves AC- & AC- % AC- Mixed operation of squirrel-cage motors; U e = V E+ C C C C C C C C C C C Operating Cycles E+ E+ Rated Operating Current I e AC- / AC- [A] Heavy Duty Starting and Regular Short-time Operation Bulletin -C Contactors C/C/C C C/C C C/C/C C Maximum Starting Time/Loading Time [s] Starting Current/Short Time Current [A] Publication A-CAA-EN-P -
28 Bulletin -C/-C Maximum Operating Rates AC- C Non- or slilghtly inductive loads, resistance furnaces; U e = V E+ Permissible switching rate [ops/hr] E+ E+ E+ E+ C/C/C/C C/C/C E+ C/C C/ C/C E+ P/Pn [%] AC- Stepping of slip-ring motors; U e = V E+ Permissible switching rate [ops/hr] E+ C/C/C C/C/C/C C/C C/C E+ P/Pn [%] - Publication A-CAA-EN-P
29 Bulletin -C/-C Maximum Operating Rates AC- Switching of squirrel-cage motors while starting; U e = V Relative operating time %, Starting time t A =. s E+ Permissible switching rate [ops/hr] E+ C/C/C C/C/C/C C/C/C/C E+ AC- Inching of squirrel-cage motors; U e = V Starting time t A =. s E+ P/Pn [%] Permissible switching rate [ops/hr] E+ C C C C/C C/C/C C C/C E+ P/Pn [%] Publication A-CAA-EN-P -
30 Bulletin S-C/S-C IEC Safety Contactors Approximate Dimensions Dimensions are shown in millimeters (inches). Dimensions are not intended for manufacturing purposes. Bulletin S-C/S-C Contactors and Accessories c Mounting Position AC Contactors and DC Contactors with V or V Electronic Coils AC contactors and DC contactors with electronic coils DC contactors Cat. No. a b c c c Ød d d S-C S-C S-C, S-C S-C S-C S-C (-/) (-/) (-/) (-/) DC Contactors with Conventional Coils (-/) (-/) (-/) (-/). (-/). (-/). (-/) (-/). (-/). (-/). (-/). (-/) (/). (/). (/). (/) -. (-/) -. (-/) -. (-/) -. (-/) (-/) (-/) (-/) (-/) Cat. No. a b c c c Ød d d S-CZ...S-CZ S-CZ S-CZ...S-CZ S-CZ S-CD...S-CD (-/) (-/) (-/) (-/) (-/) c c (-/) (-/) (-/) (-/) (-/) DC Contactors with V or V DC Electronic Coils. (-/). (-/). (-/). (-/) (-/). (-/) (-/). (-/) (-/). (-/) (/) (/). (/). (/). (/) -. (-/) -. ( -/) -. (-/) -. (-/) -. (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) (-/) Cat. No. a b c c c Ød d d S-CE S- CE (-/) (-/). (-/). (-/) (/) -. ( -/) (-/) (-/) S-CE S- CE (-/) (-/). (-/). (-/). (/) -. ( -/) (-/) (-/) S-CEA S- CED (-/) (-/). (-/). (-/). (/) -. ( -/) (-/) (-/) Accessories Contactors with mm (inches) Auxiliary contact block for side mounting - or -pole a + (a + /) Electronic Timing Module on coil terminal side b + (b + /) Mechanical Interlock on side of contactor a + (a + /) Interface Module on coil terminal side b + (b + /) Surge Suppressor on coil terminal side b + (b + /) Labeling with label sheet marking tag sheet with clear cover marking tag adapter for System V / V marking tag adapter for System Bul. W (+ ) (+ ) (+ /) (+ /) Publication A-CAA-EN-P -
Ratings for Switching AC Motors AC-2, AC-3, AC / /
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