This DC latching switch support 12V 500 AMP with peaks up 1600Amps:
Cranking current (1 min.):1000A
Nominal make / break current:500A (0 – 34Vdc) 350A (35 – 60Vdc)
Peak make / break current: 1600A (0 – 34Vdc) 1200A (35 – 60Vdc)
Check the connection diagram