Flaming River battery disconnect switch FR1003 T-handle 250A continuous 2500A surge water-resistant

Flaming River FR1003 is a heavy-duty, spring-loaded battery disconnect switch rated for 250A continuous and 2500A peak to quickly isolate power and prevent battery drain. The FR1003 Big Switch is built for high-current vehicle electrical systems where low resistance, reliable isolation and quick operation matter. It combines a water-resistant housing, vibration-resistant internal spring, and a T-handle actuator mounted on an anodized aluminum bracket so racers, custom builders and shop technicians can cut battery power cleanly during service, storage, or emergency situations.

How does this switch protect my battery when the vehicle is not running?

The Flaming River FR1003 physically disconnects the battery negative or positive feed to remove parasitic current draw from accessories or charging systems. Turning the T-handle to the off position interrupts current flow, helping preserve charge and preventing slow drain over long storage periods.

• 250 amps continuous rating for normal operating loads (12/16/24V).
• 2500 amps 5-second surge rating for high-starting currents.
• Positive mechanical isolation — not reliant on relays or electronics.

Will it hold up in motorsports and rough conditions?

Yes — the FR1003 is designed with vibration-resistant internals and a waterproof body to withstand harsh environments. It meets acceptance standards for many sanctioning organizations, making it suitable for race cars and off-road vehicles that experience shock, moisture and repeated switching.

• Spring-loaded, vibration-resistant mechanism maintains contact under load.
• Water-resistant construction for motor, trail, and outdoor use.
• Accepted by sanctioning bodies including IHRA/NHRA where applicable.

How easy is installation and everyday operation?

Installation is straightforward using the included anodized aluminum mounting bracket and zinc-plated hardware. The fixed, spring-loaded T-handle offers a firm grip for quick manual operation and clear on/off feedback, so drivers and mechanics can isolate power without tools.

• Comes with anodized aluminum bracket and mounting hardware.
• Easy-grip fixed T-handle for fast manual switching.
• Compact footprint fits common battery tray and firewall locations.

What electrical systems and voltages does this switch support?

The FR1003 is suitable for 12V systems and also rated for 16V and 24V applications, making it adaptable to classic, performance and specialty vehicles. Its high surge rating covers heavy starter and accessory currents common in modified and diesel setups.

• Continuous rating: 250A at 12/16/24V systems.
• Peak surge rating: 2500A for up to 5 seconds to handle cranking loads.
• Suitable for both positive or negative battery isolation installations.

Who is this for? The Flaming River FR1003 is aimed at racers, restorers, custom builders, and technicians who need a dependable manual battery cutoff that minimizes voltage drop and resists harsh conditions. If you maintain a high-current electrical system, store vehicles for long periods, or compete in sanctioned events, this switch provides fast isolation, durable construction, and the high surge capacity modern starters demand.

• Package Weight: 0.771 Kg
• Product Type: Electronic Switch
• Package Quantity: 1
• Package Dimensions: 8.636Cm (L) X 20.574Cm (W) X 21.082Cm (H)

FAQ

Q: Can the FR1003 handle starter surge currents?

A: Yes. It supports up to 2500A peak for five-second surges, covering typical starter and high-crank demands.

Q: Is the switch weather resistant for outdoor use?

A: Yes. The FR1003 features a water-resistant design and vibration-resistant internals for rugged conditions.