Blue Sea Systems 9003e Battery Switch 350A On/Off

Max Voltage: 48V DC (No AC)
Continuous Amperage: 350A
5 Minute Intermittent Amperage: 600A
30 Second Cranking Amperage: 1200A
Battery Bank Inputs: 1
Switch Positions: 2
Connectivity: Break before make
Ignition Protected: Yes, ISO 8846, J1171
Ingress Protection: IP66 - water resistant protected against powerful water jets
UL 1107

Stud Size: 3/8in
Stud Count: 2
Max Wire Size: 4/0 AWG
Mounting Holes: 4
Mounting Screw: 1/4in (M6)
Mounting Options: Surface mount or rear panel

A battery switch is the first device you interact with when turning on a system and the last device you turn off when you end the day. Having a battery switch you can trust prevents parasitic draw on your battery bank when you are away. These 350A battery switches are an industry standard used around the world. The studs are swedged using a 1 ton press into the copper bus inside the switch. That ensures that the battery lug you connect to the stud provides virtually resistance free connection through the switch.