Flaming River (FR1048): Big Switch 500 Racing Battery Disconnect Safety Switch

Coming in at only 19.2 oz., the 500-amp Big Switch 500 battery disconnect safety switch from Flaming River handles surges of 2,500 amps for up to 5 seconds and can be installed on 12/16 and 24V charging systems.

Flaming River designed the FR1048 with a high-impact, glass-filled, molded-nylon body to resist extreme vibration; an IP65-rated housing to resist water; silver-plated studs; easy-grip T-handle for efficient operation; and corrosion-resistant, black-anodized aluminum bracket.

Accepted by most race-sanctioning bodies (including IHRA and NHRA).


  • Continuous-service switch handles surges of 2,500 amps for up to 5 seconds.
  • Can be installed on 12/16 and 24-volt charging systems.
  • Weighs only 19.2 oz—15% lighter than previous products.
  • High-impact, glass-filled nylon body to absorb vibration.
  • IP65 housing resists water.
  • Easy-grip T-handle, corrosion-resistant bracket, and silver-plated studs.
  • Warranty: 1 year.
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