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I.L. 29C508B

Page 8

Effective 9/00

7.0 REFERENCES

7.1 SERIES C L-FRAME MOLDED CASE CIRCUIT
BREAKERS

29C105

Frame Instruction Leaflet 

AD 29-167L

Typical Time-Current Characteristic 
curves for L Frame Breakers

7.2 INTERNAL ACCESSORIES

The following types of internal accessories, which mount
on the trip unit, are available for use. The number of the
instruction leaflet covering the installation of each
accessory is shown.

•  Alarm (Signal)/Lockout (ASL) Switch  . . . .I.L. 29C183
•  Auxiliary Switch  . . . . . . . . . . . . . . . . . . . . .I.L. 29C123
•  Shunt Trip  . . . . . . . . . . . . . . . . . . . . . . . . .I.L. 29C146
•  Low Energy Shunt Trip  . . . . . . . . . . . . . . .I.L. 29C147
•  Undervoltage Release Mechanism 

(HandleReset  . . . . . . . . . . . . . . . . . . . . . .l.L. 29C170

Figure 5-3  Connections for Ground Fault No-Trip Test,
with a Three-Wire System

Low 
Voltage
Source

Source

L          C        R

Current Limiting
Resistor
(if required)

Summary of Contents for Digitrip OPTIM 550

Page 1: ...TY PROCEDURES CUTLER HAMMER IS NOT LIABLE FOR THE MISAP PLICATION OR MISINSTALLATION OF ITS PROD UCTS The user is cautioned to observe all recommendations warnings and cautions relating to the safety...

Page 2: ...DC applications a thermal magnetic trip unit should be used The Digitrip OPTIM 550 Trip Unit for the L Frame is available in 3 different types and four different maximum ampere ratings Table 1 1 Groun...

Page 3: ...ring channels Ground fault trip units are supplied from the factory with a wire harness with pigtail lead connections for a neutral current sensor white and gray wires A neutral current sensor is prov...

Page 4: ...etaining slots of the trip unit I L 29C508B Page 4 Effective 9 00 Figure 3 3 Neutral Current Sensor Placement 1 50 Table 3 1 Digitrip L Frame OPTIM Rating Plugs Max Amps In Catalog Number of trip unit...

Page 5: ...ed to avoid exceeding a safe terminal temperature operating range Consult Cutler Hammer for recommendations 4 1 GENERAL The Digitrip OPTIM 550 Trip Unit provides a tripping sig nal to the flux transfe...

Page 6: ...RFORMANCE TESTING FOR GROUND FAULT TRIP UNITS 5 2 1 CODE REQUIREMENTS The National Electrical Code under Article 230 95 C requires that any ground fault protection system be per formance tested when f...

Page 7: ...TING AND NOT FIELD CALIBRATION OF THE DIGITRIP OPTIM 550 GROUND FAULT TRIP UNIT ANY TEMPORARY CONNECTION MADE FOR THE PURPOSE OF CONDUCTING TESTS SHOULD BE RESTORED TO PROPER OPERATING CONDITIONS BEFO...

Page 8: ...es which mount on the trip unit are available for use The number of the instruction leaflet covering the installation of each accessory is shown Alarm Signal Lockout ASL Switch I L 29C183 Auxiliary Sw...

Page 9: ...round Fault Test Record should be Retained by Those in Charge of the Building s Electrical Installation in order to be Available to the Authority having Jurisdiction Test Date Circuit Breaker Number R...

Page 10: ...I L 29C508B Page 10 Effective 9 00...

Page 11: ...I L 29C508B Page 11 Effective 9 00...

Page 12: ...Cutler Hammer Pittsburgh Pennsylvania U S A Effective 9 00 ISI Style 6603C85H03 Printed in U S A Page 12 I L 29C508B...

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