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Small ivory rectangular circuit breaker with silver metal cover and blade terminals

Bussmann

Bussmann CB227-15 15 A 28 V circuit breaker

SKU CH-FRNH-A1M4S

A 15 A, 28 V DC manual-reset circuit breaker with blade terminals that plugs into ATC fuse holders and meets SAE J1171 and J553

  • TypeCircuit Breakers
  • 15 A rating protects automotive circuits up to 28 V DC
  • Manual reset restores power without replacing a fuse
  • 2 kA interrupt rating at 28 V DC handles fault currents
  • SAE J1171 and SAE J553 compliance meets industry standards
  • Plug-in blade terminals fit standard ATC fuse connectors

Automotive 15 A 28 V Circuit Breaker

The Bussmann CB227-15 is a plug-in circuit breaker rated for 15 amps at 28 volts DC. It serves as a reusable alternative to standard ATC blade fuses in automotive and generator electrical systems. The manual reset function allows restored power after a fault without replacing the device. Its thermoplastic body with a silver metal cover meets SAE J1171 and SAE J553 standards.

Vehicles and equipment needing resettable 15

This breaker suits installations where an ATC-style fuse is specified and a manually resettable device is preferred. It fits the same blade terminals and mounting format as a standard ATC fuse. Buyers who need a higher amperage rating, a different voltage class, or an automatic reset mechanism should select a different part. The 2 kiloampere interrupt rating at 28 V DC defines its fault-current capability.

28 V DC rating and manual reset

The single specification that determines fit is the 28 volt DC voltage rating combined with the 15 ampere current rating. Only circuits designed for this voltage and current level should use this breaker. The manual reset type requires user action to restore power after a trip. Verify the system voltage and connector style before purchase.

Highlights

  • 15 A rating protects automotive circuits up to 28 V DC
  • Manual reset restores power without replacing a fuse
  • 2 kA interrupt rating at 28 V DC handles fault currents
  • SAE J1171 and SAE J553 compliance meets industry standards
  • Plug-in blade terminals fit standard ATC fuse connectors

Specifications

BrandBUSSMANN
TypeCircuit Breakers

Questions about this item

How do I install the CB227-15 in an ATC fuse block, and what step is often missed?

Align the blade terminals with the ATC fuse connector and press firmly until fully seated; the step often missed is verifying the silver metal cover sits flush, confirming the thermoplastic body is properly locked in the block.

What maintenance or replacement will the CB227-15 need after a trip event?

After an overcurrent trip, the manual reset lever must be physically cycled to restore the circuit; no internal parts are user-serviceable, so if the breaker fails to hold after reset, the entire unit requires replacement.

What limit appears first when the CB227-15 runs at 15 A continuously in a hot engine bay?

The thermoplastic housing and silver cover are rated for the 28 V DC, 2 kA interrupt environment; sustained 15 A load combined with high ambient temperature will stress the housing material before the electrical ratings are exceeded.

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