DOCA0189EN–05

Two Contactors Changeover

Changeover Application Description

A changeover contactor pair helps to ensure the continuity of operation of an installation and energy management. It switches between:

  • A power supply source M (main) which normally supplies the installation.

  • A power supply source S (standby) which can be an incoming line from an additional network or a generating set.

The supply sources are three-phase or three-phase + neutral.

The two contactors must be mechanically and electrically interlocked to prevent any paralleling, even transitory, of the two supplies.

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

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