Bulletin 1494V Variable Depth, Flange Operated Circuit Breaker Kits for 125A, 150A 250A and 400A Frame Sizes

Transcription

1 ulletin 494V Variable epth, Flange Operated ircuit reaker Kits for 5A, 50A 50A and 400A Frame Sizes ATTENTION: To prevent electrical shock, disconnect from power source before installing or servicing. Install in suitable enclosure. Keep free from contaminants. omponents at No. escription Switch Rating (Amps) 494F-M 494F-P 494F-S 5-/" Painted Metal Handle 5-/" Molded Handle 5-/" Stainless Steel Handle 5A...400A 494V-RA 494V-RA4 Standard onnecting Rod Enclosure Working epth: -/4" to 9-/8" Extended onnecting Rod Enclosure Working epth: 9-/8" to " 5A...400A 494V-M4 Allen-radley: 40U-H (MP), 40M-H (MP) utler-hammer: EF, HMPE 5A 494V-M40 Allen-radley: 40M-I (MPP and MP) utler-hammer: EH, F, F, F, HF, HMP 50A 494V-M5 Allen-radley: 40U-J (M), 40M-J (MP and MP) utler-hammer: EF 50A 494V-M50 utler-hammer: J, J, J, HJ, HMP 50A 494V-M0 Allen-radley: 40U-K (M), 40M-K (MP and MP) utler-hammer: K, K, K, HK, HMP 400A N.O. TERMINAL GUAR 495-N8 495-N9 () N.O. Auxiliary ontact () N.. Auxiliary ontact 5A...400A 495-N Auxiliary ontact Adapter Kit 5A...50A 495-N Auxiliary ontact Adapter Kit 50A...400A () Printed in U.S.A.

2 Handle Installation Locate Handle A A E E oor atch racket oor atch racket Right Hand-Flange Left Hand-Flange FRAME SIZE A (min) (min) (max) E F G H J 5A, 50A - /" 9/" - /" - 5/8" - /" 4 - /" - 9/" " 7/8" 50A 0-9/" 9/" - /" - 5/8" - /" 4 - /" - 9/" " 7/8" 400A - /" 9/" - /" - 5/8" - /" 4 - /" - 9/" " 7/8" rill Handle Holes ().5 ia. Holes Locate oor atch Enclosure oor To make slot drill () /" diameter holes and remove burrs J H H G F oor atch racket 0 lb-in oor atch Enclosure ase Notes: A) Enclosures with a Flange Thickness less than /" use dimensions above. ) Enclosures with a Flange Thickness /" and greater use dimensions in Kit 494V-H. ) Multi-oor Enclosures use dimensions in hannel Support Kit 494V-H4, if handle is mounted atop channel. ) The door catch mounting bracket is provided with projections for welding; however, holes can be drilled in the bracket using the projections for locating hole centers. After proper location, use the bracket as a template and drill corresponding holes in the enclosure door. Fasten the bracket with hardware supplied by user. If properly assembled, the hardware should not be accessible for tampering with by unauthorized personnel. 4 Install efeater Lever 5 Install Gasket Install Handle to Flange 7- lb-in -7 lb-in ()

3 ircuit reaker Installation 494V-M4 494V-M5 (Only) N Enclosure Working epth (Flange to Plate) onnecting "N" atalog Number Rod Min. Max. Standard 494V-RA -/4" 9-/8" Extended 494V-RA4 9-/8" " N - " - lb-in Threaded Rod 4a Locate ircuit reaker (5A and 50A Frame ircuit reakers) AA AA AA Right Hand-Flange Left Hand-Flange Frame Size 5A AA /4" - 7/4" - /8" 4 - /" Wire ending Space (4) - #8- lb-in 0 50A /4" - 7/4" - /8" 4 - /" (4) - #8-0 ()

4 HH MM AA ircuit reaker Installation (ont'd) 4b Locate ircuit reaker (50A and 400A Frame ircuit reaker) MM FF HH GG GG JJ JJ Right Hand-Flange Left Hand-Flange Frame Size AA FF GG 50A /" - 9/" - /8" 7 - /4" /" /8" - /" 0 () - #0- (4) - /4-0 0 HH MM Wire ending Space JJ lb-in 400A /" -/" /" - /" /4" 0 - /4" - 4/4" () - #0- (4) - / lb-in On Off Toggle Adjustment Plate UP Toggle Adjustment Plate 5-0 lb-in 50A 5A 5A / 50A ircuit reaker 50A / 400A ircuit reaker (4)

5 ircuit reaker Installation (ont'd) Hitch Pin Testing of ircuit reaker. Verify that the circuit breaker can be turned on by moving the defeater lever downward and moving the disconnect handle to the ON position.. If the circuit breaker does not turn on, loosen the () screws and adjust the toggle adjustment plates toward the line terminals until the circuit breaker turns on when the disconnect handle is in the ON position. Tighten the () toggle adjustment plate screws to 5-0 lb-in.. If the circuit breaker still can not be turned on unhook the spring, remove hitch pin and separate threaded rod and handle link. Turn threaded rod one full turn counterclockwise. Reattach threaded rod and handle link, hitch pin and spring. Repeat Step and if necessary Step. 4. Verify that the circuit breaker can be turned off by moving the disconnect handle to the OFF position. 5. If the circuit breaker can not be turned off, loosen the () screws and adjust the toggle adjustment plates toward the load terminals until the circuit breaker turns off when the disconnect handle is in the OFF position. Tighten the () toggle adjustment plate screws to 5-0 lb-in.. If the circuit breaker still can not be turned off and if no adjustment of the threaded rod was made in Step then unhook the spring, separate threaded rod and handle link and remove hitch pin. Turn threaded rod one full turn clockwise. Reattach threaded rod and handle link, hitch pin and spring. Repeat Step 4 and if necessary Step Verify that the circuit breaker can be reset after manually tripping when circuit breaker is in the ON position. 8. Manually trip the circuit breaker while in the ON position, then move the disconnect handle to the Off-Reset position. 9. If the circuit breaker does not reset, loosen the () screws and adjust the toggle adjustment plates in small increments toward the load terminals. Note: Repeat this procedure until the circuit breaker can be reset. Note: o not adjust the toggle adjustment plate too far: this will prevent the disconnect handle from moving to the full OFF- Reset position. 0.Tighten the () adjustment plate screws to 5-0 lb-in..verify that the circuit breaker can still be turned on following the above steps. Note: Twisting of the bail mechanism is acceptable when the handle is in the full ON or full OFF position. (5)

6 Auxiliary Installation Safety Guards On Off ulletin 495 Auxiliary ontacts 5 Slot Slot A ase Assembly Support racket am 4 ushings Safety Guard ail Support Plate ulletin 495 Auxiliary ontacts. Move the disconnect handle on the combination starter to the OFF position.. Fasten the cam and bushings to the bail with () flat washers, () lock washers, and () screws Tighten to - lb-in.. Fasten the base assembly to the support bracket with () screws. Tighten to 7-0 lb-in. 4. Attach the assembly from Step to the ear on the support plate with () screws. Tighten to 7-0 lb-in. 5. Attach the auxiliary contact with the safety guard to the base assembly. Note: If a single auxiliary contact is used, it must be positioned nearest the cam, in slot A shown above. A second auxiliary contact would be positioned in slot. Testing of Auxiliary ontacts. Make sure the auxiliary contact and adapter kit (circuit breaker) have been installed in the proper position.. If the auxiliary contact (circuit breaker) is N.O., place the probes of the continuity tester across both terminals with the disconnect handle in the OFF position; there should be no continuity.. Move the disconnect handle to the ON position and place the probes of the continuity tester across both terminals; there should be continuity. 4. If the auxiliary contact (circuit breaker) is N.., place the probes of the continuity tester across both terminals with the disconnect handle in the OFF position; there should be continuity. 5. Move the disconnect handle to the ON position and place the probes of the continuity tester across both terminals; there should be no continuity () Printed in U.S.A.