Magnum low voltage drawout circuit breaker IEC horizontal stab cassette shutter kit (double wide A cassettes)

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1 kit (double wide A cassettes) i WARNING (1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE PERMITTED TO WORK ON THE EQUIPMENT. (2) ALWAYS DE-ENERGIZE PRIMARY AND SECONDARY CIRCUITS IF A CIRCUIT BREAKER CANNOT BE REMOVED TO A SAFE WORK LOCATION. (3) DRAWOUT CIRCUIT BREAKERS SHOULD BE REMOVED FROM THEIR COMPARTMENTS. (4) ALL CIRCUIT BREAKERS SHOULD BE SWITCHED TO THE OFF POSITION AND MECHANISM SPRINGS DISCHARGED. FAILURE TO FOLLOW THESE STEPS FOR ALL PROCEDURES DESCRIBED IN THIS INSTRUCTION LEAFLET COULD RESULT IN DEATH, BODILY INJURY, OR PROPERTY DAMAGE. Section 1: General information Cassette safety shutters are optional automatically operated insulating type safety shutters for use with a drawout cassette. When the drawout circuit breaker is levered (racked) from the CONNECT position, the shutters automatically close to cover the fixed primary contacts. When the circuit breaker is levered (racked) into the cassette, the shutters automatically open, permitting primary connections to be made. Required tools 10 mm socket and drive (M6 hex nut) 10 mm wrench (M6 x 30 screw) External retaining-ring tool E-clip (retaining ring) Small Phillips head screwdriver (M4 x 10 screw) Slotted screwdriver (link mounting screw) Small crescent wrench (M4 nut) Kit parts identification Refer to Figure 2 for visual identification of the parts listed below: (A) M6 hex nut (four) (B) M6 x 30 screw (eight for six-pole, ten for eight-pole) (C) M6 lock washer (four) (D) Shutter spring (two) (E) Upper shaft assembly (two) (F) Lower shaft assembly (two) (G) Top link slide assembly (one) (H) Bottom link slide assembly (one) (I) M4 nut with lock washer (four) (J) Link mounting screw (four) (K) O-ring (four) (L) M4 x 10 screw (four) (M) M6 x 25 wide washer (four) (N) Retaining ring (four) (O) Shaft collar (four) (P) Lubricant (one) (Q) Shutter panel assembly (two) (R) Bottom bearing double wide shaft (one) (S) Shaft joint (two) (T) M8 x 8 hex bolt (four) (U) M8 serrated lock washer (four) (V) Top bearing double wide shaft (one) (W) M6 serrated lock washer (three) (X) M6 x 12 thread-forming screw (three) (Y) Barrier panel (one)

2 Figure 1. External Retaining-Ring Tools Section 2: Installation of IEC A cassette shutter kit Proceed with the following eight steps: Step 1: Install two shaft collars on left-side sheet (on right-side sheet for right-side mounting). Fasten the grooves on the collars with retaining rings. (P) (Q) (E) (Y) (A) (C) (I) (K) (L) (N) (X) (B) (V) (T) (F) (R) (J) (M) (H) (O) Shaft Collar (W) (U) (S) (D) (G) Figure 2. Contents of Kit Retaining Ring Figure 4. Step 1 Step 2: Apply Magnalube-G lubricant (provided with kit) to wide washer face and edges of slots. Run link mounting pins through slots and washers, and capture with retaining rings. Hook shutter spring on the mounting post of bottom link slide assembly. Lubricant Here O-Ring O-Ring Mounting Post Shutter Spring Link Mounting Pin Figure 3. Additional View of the Cassette Side Sheet Bottom Shutter Link Assembly Shown (for left side mounting) Figure 5. Step 2 2

3 Step 3: Mount the shutter slide link assemblies to the cassette side sheet with M6 lock washers (C) and M6 hex nuts (A). The left-side mounting is shown with the right-side mounting just the opposite. Note: The straight edge (without step) of the slide link assembly is on the bottom of the lower assembly and is up on the upper assembly. Instructional Leaflet IL2C13765H05 Step 5: Mount each shutter assembly with two M4 screws and hex nuts, and four M6 x 30 thread-forming screws (six required for four-pole shutters). Torque the M6 x 30 thread-forming screws to in-lbs (7 9 Nm). Mount the bearing plate to the rail with two M6 x 12 mm threadforming screws. Torque to in-lbs (7 9 Nm). M4 x 10 Screw Hex Nut with Lock M6 Nut and Serrated M6 x 12 Thread- Forming Screw Hook Spring Here Bearing Plate Notch Up Notch Down Figure 6. Step 3 Hook Spring Here Figure 8. Step 5 M6 x 30 Thread- Forming Screw Step 6: Apply Magnalube-G lubricant to the edges of slots on the shaft arms of the shaft assemblies and to the inside surfaces of the shaft collars. Step 4: Assemble the shutter shafts to the joiner brackets with M8 x 8 mm hex bolts and serrated lock washers. Note the location of the slotted shaft arms. Lubricate Four Shaft Collars (O) Slotted Shaft Arm M8 Hex Bolt and Serrated Joiner Bracket M8 Hex Bolt and Serrated Lubricate Edges of Slots and Curved Edges Figure 7. Step 4 Figure 9. Step 6 3

4 Step 7: Refer to Figure 13 for an exploded view of the shaft assemblies. 1. Position the tips of the shaft arms between the pins on the shutters. Maintain this position during the assembly. 2. Extend the other end of shaft through holes on other side sheets (without shaft collars). Then position slot on the shaft arm over the pin on the shutter link. 3. Insert the shaft end into the shaft collar, and into center-bearing plates (refer to Steps 7a and 7b). Check the positions of the shaft arms between the shutter pins, and the slot on shaft arm over shutter link pin. Step 8: To install the shutter shaft assemblies, insert the two remaining shaft collars through the other side sheet and onto the other ends of the shafts. Fasten grooves on these collars with retaining rings. Shaft Collar (1) Position Tips of Shaft Arms and Maintain (2) Position Slot on Shaft Arm Upper Shaft Lower Shaft Shaft Collar Retaining Ring Attaches Inside Cassette (3) Insert Shaft End and Check Position Left Side Mounting Shown for Both Upper and Lower Shaft Assemblies (Shafts are Reversed for Right Side Mounting) Figure 13. Step 8 Figure 10. Step 7 Bearing Plate for Lower Shaft Figure 11. Step 7a Bearing Plate for Upper Shaft Figure 12. Step 7b 4

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8 Disclaimer of warranties and limitation of liability The information, recommendations, descriptions, and safety notations in this document are based on Eaton Corporation s ( Eaton ) experience and judgment, and may not cover all contingencies. If further information is required, an Eaton sales office should be consulted. Sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser. THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability, or otherwise for any special, indirect, incidental, or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information, recommendations, and descriptions contained herein. The information contained in this manual is subject to change without notice. Eaton Corporation Electrical Sector 1000 Cherrington Parkway Moon Township, PA United States 877-ETN-CARE ( ) Eaton.com 2010 Eaton Corporation All Rights Reserved Printed in USA Publication No. IL2C13765H05 / Z8875 April 2012 PowerChain Management is a registered trademark of Eaton Corporation. All other trademarks are property of their respective owners.