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Gold brass knife blade battery disconnect switch with insulated handle for top post terminal

RAYBESTOS UNBRANDED

RAYBESTOS UNBRANDED Battery Disconnect Switch 12V 250A Top Post

SKU CH-BTEN-SPR0B

A brass knife-blade switch isolates a 12 V battery at up to 250 A continuous and 750 A momentary current, fitting 15.5–17 mm negative terminals on cars, RVs, ATVs, yachts, vans and trucks

  • Product typeBattery Disconnect Switch
  • Brass construction resists corrosion for long service life
  • Knife-style handle isolates circuit quickly for safety
  • Installs on negative terminal in minutes without special tools
  • Compact 9.2×8.6×3.3 cm size stores easily in glove box
  • Handles 250 A continuous and 750 A momentary at 12 V

Brass Knife-Blade Disconnect

This battery disconnect switch uses a solid brass body rated for 250 A continuous and 750 A momentary current at 12 V or 24 V. The knife-blade handle isolates the operator from live parts while cutting power with a simple lift motion. It mounts directly on the negative terminal of vehicle batteries found in cars, RVs, ATVs, yachts, vans and trucks.

Terminal Fit Limits

The clamp accepts negative posts measuring 15.5 mm to 17 mm in diameter, which covers most standard automotive top-post batteries. Larger marine or commercial terminals will not fit inside the jaws, and smaller motorcycle posts may not clamp securely. The overall footprint is 9.2 cm by 8.6 cm by 3.3 cm, so tight battery trays should be measured before ordering.

250 A Continuous Rating

The single figure that decides suitability is the 250 A continuous current rating; systems drawing more than this under normal operation will overheat the brass contacts. Installations with winches, large inverters or starter motors that exceed 250 A steady load need a higher-rated isolator instead.

How it compares

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Price $9.99
Cheaper than about 95% of the 36 comparable items (median $33.49).

Specifications

Product
Brand nameUnbranded
Product typeBattery Disconnect Switch

Questions about this item

Does the 250 A continuous rating match my 12 V system load?

The switch is rated for 250 A continuous and 750 A momentary at 12 V, so it will handle typical starter and accessory currents on a 12 V vehicle battery.

What does the 750 A momentary figure mean in practice?

It allows short surges up to 750 A such as engine cranking, while the 250 A rating covers sustained loads like winches or inverters.

How does the knife-blade mechanism connect to the battery post?

The brass blade clamps directly onto a negative terminal of 15.5–17 mm diameter, and the isolated handle lifts to break the circuit.

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