Siemens Low Voltage Power Circuit Breaker WLF2A316

Lay circuit breaker on its side

Sign off on the current sensor removal

Charge the closing spring manually

DANGER: Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device.

WARNING: High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker.

Circuit breaker opened and closing spring discharged

Circuit breaker moved into the withdrawn position in the cradle

Arc splitter plates inspected for erosion

Arc splitter plates show normal wear

Heavy wear observed on arc splitter plates

If heavy wear is observed, replace the arc chutes and circuit breaker.

Circuit breaker's internal contacts inspected for wear

Charge the closing spring manually (page 6-4)

Was the spring charged successfully?

Using a screwdriver, cut the plastic indicator pin along the upper edge of the large recess.

Was the indicator pin cut successfully?

Is the indicator pin still visible?

If the indicator pin is no longer visible, the contact system must be replaced.

Was the contact system replaced successfully?

NOTE: Before removing the screws, support circuit breaker in such a way that the circuit breaker feet are not supporting the weight of the circuit breaker.

Circuit breaker properly supported?