Nanfeng ZJW400A Contactor, 12V coil
$70.00
The ZJW400A model are rated to 400 amps continuous, but can handle up to 1000A short term.
The solenoid is 12 volts to close the contacts which draws about 1.2 amps when energised.
Terminals are 3/8" dia
These are a low-cost alternative to the Albright SW200.