DOCA0218EN-00

Setting the Neutral Protection

On four-pole circuit breakers, it is possible to select the type of neutral protection for the fourth pole using the three-position dial on the ComPacT NS circuit breaker:

  • Neutral unprotected (4P 3D)

    NOTE: With the 4P 3D setting, the current in the neutral must not exceed the rated current of the circuit breaker.
  • Neutral protection at 0.5 In (3D + N/2, factory setting)

  • Neutral protection at In (4P 4D)

  1. Cover for neutral protection three-position dial.

Follow these steps to set the type of neutral protection.

  1. Remove the cover of the switch.

  2. Select the protection type.

  3. Put the cover back in place.

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

Was this helpful?