Safety First: Leave the breaker OFF and unplug the unit if possible. Do not repeatedly reset a breaker that trips instantly.

Step 1 – Inspect for leaks: Check for any signs of water around the disposal, especially at the bottom and junction box. Fix any plumbing leaks before proceeding.
Step 2 – Check power cord and plug: For corded models, inspect the cord and plug for damage. Replace if insulation is cut or melted.
Step 3 – Inspect junction box: Open the Astracast junction box and look for bare wires touching the metal housing or each other. Correct and re-insulate as needed.
Step 4 – Isolation test: Disconnect the disposal wires from the supply and cap them. Turn the breaker ON. If it holds, the fault is in the disposal; if it still trips, the issue is in the house wiring.
Step 5 – Replace disposal: If the breaker only trips when the Astracast unit is connected, the motor or internal wiring is shorted and the unit should be replaced.

Warning: Ground faults near water are extremely dangerous; if unsure, contact a qualified electrician.

Astracast disposal trips the household circuit breaker or RCD/GFCI immediately when switched on.

Possible Causes