Square D by Schneider UTS-3 Test Set, Test Module for Circuit Breakers

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Square D_UTS-3The Square D by Schneider UTS-3 Secondary Injection Test Set is designed to perform operational tests and diagnoses of Square D electronic trip circuit breakers, circuit breaker components and tripping functions. 

The Square D by Schneider UTS-3 will pass enough current to check any desired calibration point. The breaker must be de-energized before checking the operation of the solid-state trip units.

If the Square D by Schneider UTS-3 Secondary Injection Test Set shows that the solid-state trip unit is not functioning properly, the trip unit should be replaced.

Check the following table to find the appropriate test set/test module for the circuit breaker.

Test Set/Test Module 

Circuit Breaker

Circuit Breaker Series Number

Test Set

Test Module

LE/LX

1B

CBTU1 or UTS3

CBTMB

ME

1 and 2

3

4 and 5

5A

5B

CBT78

CBTU1 or UTS3 C

BTU1 or UTS3

CBTU1 or UTS3

CBTU1 or UTS3

Not Available – Primary
Injection Testing Only

CBTM3

CBTM4 or CBTM4A

CBTM4A

CBTMB

MX

4 and 5

5B

CBTU1 or UTS3

CBTU1 or UTS3

CBTM4 or CBTM4A

CBTMB

NE

1

2 and 3

3A

3B

CBTU1 or UTS3

CBTU1 or UTS3

CBTU1 or UTS3

CBTU1 or UTS3

CBTM3

CBTM4 or CBTM4A

CBTM4A

CBTMB

NX

2 and 3

3B

CBTU1 or UTS3

CBTU1 or UTS3

CBTM4 or CBTM4A

CBTMB

PE

1, 2 and 3

4

5 and 6

6A

6B

CBT78

CBTU1 or UTS3

 CBTU1 or UTS3

CBTU1 or UTS3

CBTU1 or UTS3

Not Available – Primary
 Injection Testing Only

 CBTM3

CBTM4 or CBTM4A

CBTM4A

CBTMB

PX

5 and 6

6B

CBTU1 or UTS3

CBTU1 or UTS3

CBTM4 or CBTM4A

CBTMB

SE

1

2

3

3A

3B

CBTSE1

CBTU1 or UTS3

CBTU1 or UTS3

CBTU1 or UTS3

CBTU1 or UTS3

Not Available – Primary
Injection Testing Only

 CBTM1

CBTM4 or CBTM4A

CBTM4A

CBTMB

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