Schneider Electric and 6.0A User Manual

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1. If an auxiliary power supply is being used for the Micrologic trip unit, 

reconnect the auxiliary power supply.

2. Reset the trip unit switches to original values, as recorded at the 

beginning of this section.

Reconnect circuit breaker as directed in the circuit breaker instruction 
bulletin shipped with the circuit breaker. 

Field installation of a trip unit requires secondary injection testing with the 
Full-Function Test Kit. to ensure that the newly-installed trip unit is 
functioning properly. The test will require opening and closing the circuit 
breaker. Follow the procedures outlined in the instruction bulletins shipped 
with the circuit breaker and the test kit.

1. Make sure the circuit breaker is isolated from all upstream and 

downstream devices.

2. Perform secondary injection testing as outlined in the instruction bulletin 

shipped with the test kit. Verify that all applicable trip unit functions are 
operating properly.

3. Repeat step 2 with the circuit breaker in the open position.

NOTE: The test kit states that the circuit breaker should be closed when 
performing the test. Do not close the circuit breaker for this step.

4. If any test fails, do not put the circuit breaker into service and contact the 

local sales office for factory authorization service.

Primary injection testing is recommended to ensure that all trip system 
connections have been correctly made. Perform primary injection testing 
per the instructions in the Field Testing and Maintenance Guide, bulletin 
number 0600IB1201.

1. Installed accessories – Validate the proper operation of all installed 

accessories. See the corresponding accessory instruction bulletins for 
operational testing procedures.

2. Zone selective interlocking – If the circuit breaker is part of a ZSI system, 

follow the zone selective interlocking test procedures as outlined in the 
Full Function Test Kit instruction bulletin.

3. Communications – If communication modules exist, validate circuit 

breaker has re-established communications with the supervisor.