Fastronix Solutions 3/8-inch 2-Post SPST High-Current Battery Disconnect Switch – 180A Continuous / 1000A Intermittent

Overview

Meet a rugged, high-current battery disconnect switch designed to simplify power control in demanding environments. The Fastronix 3/8-inch 2-Post SPST disconnect blends strong electrical performance with practical mounting and safety features, making it a versatile choice for mobile and static setups alike.

Power, performance, and flexibility

• 180A continuous rating and 1000A intermittent peak provide flexible operation across a range of systems.
• Single point cut off channels power to the entire electrical system, helping prevent parasitic drain and making shutdowns straightforward.
• Two mounting paths are available: a standard 3/4 inch hole or the optional 980-000 surface-mount bracket for installations with two 1/4 inch holes.
• Terminal covers 404-110 guard the studs, reducing exposure to accidental contact while providing protection in dusty or wet environments.

Real-world uses

In NHRA competition when the battery is relocated, this switch helps coordinate power isolation while keeping components organized. It also serves as a reliable power disconnect for RVs when the unit is stored or unused, helping manage energy use and safety.

With its robust build and clear, tactile switching action, the device invites an intentional power-off ritual rather than uncertain, partial disconnects. The design emphasizes safety and control in everyday projects as well as more demanding installations.

Safety and protection

• The included 404-110 terminal covers offer electrical protection to the studs, reducing the risk of accidental shorting during handling or vibration.
• Mounting versatility and solid construction aim to provide a dependable shutdown option under a variety of environmental conditions.

Installation tips

• Use careful routing for cables and keep a clear label near the switch for quick identification.
• Check the mounting surface for clean contact and tighten hardware to spec to maintain a solid connection.

Designed for durability, the unit uses sturdy terminals and housing that can handle vibration and routine handling common in vehicle, marine, or workshop environments. The switch’s simple form encourages straightforward maintenance and inspection.