Customer Reported Issue: The customer reported that the breaker does not close, and the closing spring is not charging.

1. Operating control power to the breaker

2. Truck position: TEST position

3. Breaker indicators: OPEN / Charged

The breaker does not close electrically (remote close) using the switch lever on the switchgear panel above the VCB, even though operating power is supplied.

When the breaker is OPEN with the spring CHARGED, the A3–A4 circuit should be closed per the electrical diagram. A continuity test using a multimeter (audible beep) was required to verify this condition.

      2. A3–A4 at the female pin connector (right top of the breaker)

      Purpose: Verify that the auto-connector circuit is properly closed

The female pin connectorA3–A4 failed the continuity test.

Root Cause

After drawing out the breaker and performing a visual inspection, it was found that the auto-connector (auto-con) was not fully seated. (Reference photo attached.)

Corrective Action

Return the auto-connector to its initial (properly seated) position.

As some sites do not have a lifter available, the following alternative method was used:

      1. Move the breaker to the DISCONNECTED position

      2. Use a hook-type tool (e.g., crowbar with hook tip) to properly seat the auto-connector

      3. Ensure the connector is fully engaged

Perform one full draw-in / draw-out cycle

Result After Correction

Spring charging motor operated normally

Breaker closed and opened remotely (electrically) as expected

All functions restored and operating normally

The issue was caused by an improperly seated auto-connector, preventing continuity in the A3–A4 circuit. After reseating the connector and cycling the breaker, normal operation was confirmed.