If you are building your battery or converting a vehicle you will probably need DC contactors. We have two solutions, the 150A and the 300A rated current, all for 12V coil.
It is used in pairs to protect both battery terminals for protection of the technicians under maintenance and to eliminate parasitic consumptions, however in low voltage systems you may use only one contactor.
The 300A contactors have an integrated PWM, but beware that the 150A needs PWM to hold.
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