External Power Supply
 CAUTION |
|---|
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HAZARD OF Shock, arc flash or Equipment damage
Trip unit and communication module must use separate power
supplies.
Failure to follow these instructions can result in injury or equipment damage.
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The trip unit can be powered by:
-
24 Vdc external power supply (recommended).
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Over 150 V on the bottom circuit breaker terminals on two phases.
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Over 150 V on the top circuit breaker terminals with external voltage option.
Power Supply Specifications
| Function | Specification |
|---|---|
| Power for Trip Unit Alone | 24 Vdc, 50 mA |
| Minimum Input-to-Output Isolation | 2400 V |
| Output (Including Max. 1% Ripple) | ±5% |
| Dielectric Withstand (Input/Output) | 3 kV rms |
| Connections | Connections UC3 |
Power supply is used for:
Graphic screen display when the circuit breaker is open and top fed.
Option of linking an alarm to a relay output.
To maintain date and time when the circuit breaker is open.