Contactors are two-position electromagnetic devices designed for frequent remote switching on and off of power electrical circuits under normal operating conditions.
Usually one- and two-pole contactors with direct current and three-pole contactors with alternating current are used.
Due to frequent switching contactors are subject to high demands on electrical and mechanical durability.
Contactors consist of four systems:
- electromagnetic;
- contact, consisting of movable and fixed contacts;
- arc extinguishing;
- system of auxiliary contacts (contacts for switching the signaling and control circuit).
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Products from the group «Contactors / magnetic starters / AC power relays» you can buy wholesale and retail.