300A High Voltage DC Contactor, 12V/24V coil

ATO high voltage DC contactor, rated load current of 300 amps, available 12V or 24V energy saving coil. It can work in the hostile environment, coil and contact can not be oxidized and polluted.

Features

• DC 12-900V rated load voltage of contact circuit.
• SPST-NO (normally open type) of contact form, 12 volt, 24 volt coil for selecting.
• Main contact voltage drop at 300A, not above 100mV.
• The connection of contact and coil need to be nonpolarity.
• Efficient coil, retentive power is only 2-2.3W, counter electromotive force is 0V.
• The joint way of the coil is very convenient.
• The coil has no counter force of electromagnetism.
• Compare to the similar products, this product is smallest and lightest.

Specifications

Installation Diagram (Unit: mm)

High Voltage DC Contactor Coil Schematic
Tips: How to examine the contactor with a multimeter

1. Test the coil with the ohm gear of multimeter, check if the coil is shorted, if it is, the coil is broken.
2. Test whether the normally closed auxiliary contact is breakover with the ohm gear of multimeter. If the contact doesn't contact well, the measuring resistance will be great. If the auxiliary contact is connected with load, the voltage will not reach the rated voltage when measuring.
3. Press the main contact with your hand to check if the contactor mechanism gets stuck or not.
4. Power on the contactor coil directly to check if the contactor pulls in or not.
5. After the contactor pulls in, test with a multimeter to check if the normally open auxiliary contact is breakover.