OptiFuse and Switch Components are manufacturers and marketers of overcurrent protection devices, switch components, and more. Founded in 2000, we set out to make the world a safer place by designing, building, and distributing high-quality circuit protection and switch products — for use in automotive, marine, and other applications — that our customers can trust.


Fuse Block with LED Indicators

  • Sturdy six-position fuse block
  • For regular (ATO/ATC) auto blade fuses
  • With convenient blown fuse LED indication
  • Protective clear cover included
  • Easy installation with ¼” quick connect terminals


Manual Reset (Type III) Circuit Breaker

  • Single pole thermal type breaker
  • For 24VDC circuits or lower
  • Robust metal body with horizontal mounting brackets
  • Current ratings range from 10A to 50A
  • Conforms to the SAE J553 standard


Inline Fuse Holder

  • For regular (ATO/ATC) auto blade fuses
  • PVC body with a water-resistant cap (IP 56)
  • #12 to #20 AWG wire gauges available
  • Available in various wire lengths and body & wire colors
  • With a 58VDC voltage rating


High-Amp Starter Switch

  • Convenient starter switch with OFF-(ON) positions
  • Designed with 2P SPST circuitry
  • Ideal for use in harsh environments
  • Can repel oil, water, and other liquids
  • Built to act as starter, signal, and momentary control of DC circuits


Heavy Duty Truck 7 Pole Connector

  • Durable 7-pole plug with cable guard
  • Commonly used on larger gooseneck, camper, and cargo trailers
  • Also used on 5th wheel, boat, and utility trailers. 
  • High impact nylon option for a weather-resistant dust cover
  • Meets SAE J560 standard


Sealed Rocker Switch

  • Easy-to-use and versatile rocker switch
  • Available with multiple circuit and illumination options
  • Can be configured for single pole and double pole applications
  • Amperage and voltage ratings of 21A and 14VDC
  • Different color and printing options available for actuator and frame