Trip Unit Status Check

Check trip unit battery and trip indicators.

1. Make sure trip unit is powered. The trip unit is powered if:

   • circuit breaker is on and has more than 150 V of load voltage on two phases (circuit breaker is closed or bottom fed).

   • the Full-Function or Hand-Held Test Kit is connected and on.

   • the 24 Vdc external power supply is connected.

   • the external voltage tap is installed and voltage of more than 150 V is present on two phases.

2. Press test/reset button (A).

   • All trip indicators (B) will light up

   • Battery status will be displayed

   • The battery bar graph reading is valid after the reset button has been released

   Check Trip Unit Status

   

3. If the battery bar graph shows the battery needs to be changed, use Square D battery catalog number S33593:

   • lithium battery

   • 1.2AA, 3.6 V, 800 ma/h

For instructions on replacing battery, see Battery Replacement.