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Rectangular black thermoplastic hi-amp breaker with two silver stud terminals and a small push-to-trip button

Bussmann

Bussmann CB185-80 circuit breaker 80 A

SKU CH-SEV7-V25B1

An 80 A high-amp circuit breaker with bolt-on flush mounting and push-to-trip actuator for 48 V DC systems

  • 80 A rating protects high-current circuits in buses, RVs and trucks
  • 48 V DC voltage rating matches heavy-duty vehicle electrical systems
  • 3 kA interrupt capacity at 48 V DC safely clears large fault currents
  • Manual push-to-trip actuator allows instant circuit isolation for service
  • RoHS-compliant thermoplastic housing resists heat and vibration in harsh environments

High-amperage protection for heavy-duty vehicles

The CB185-80 is an 80 A hi-amp circuit breaker built for buses, RVs and trucks. Its 48V DC rating and 3 kA interrupt capacity suit demanding auxiliary and accessory circuits. Manual push-to-trip actuation lets operators isolate a circuit instantly. Thermoplastic housing resists vibration and under-hood heat.

Verify voltage, mounting and terminal fit

Confirm the system operates at 48V DC before installation. The breaker uses a bolt-on flush mount with 1/4 in.-28 stud terminals; ensure the panel cut-out and bus-bar spacing match these dimensions. Overall depth is 1 7/8 in, height 2 7/8 in and width 1 11/16 in; check available clearance behind the mounting surface. RoHS compliance is declared for regulated markets.

Rugged thermoplastic body and stud terminals

The moulded thermoplastic case withstands shock, vibration and temperature swings common in commercial vehicles. Stud terminals accept ring lugs for secure, vibration-proof connections that resist loosening over time. Flush mounting keeps the profile low against the panel, reducing snag risk in tight compartments. Manual reset requires deliberate action, preventing accidental re-energisation after a fault.

Highlights

  • 80 A rating protects high-current circuits in buses, RVs and trucks
  • 48 V DC voltage rating matches heavy-duty vehicle electrical systems
  • 3 kA interrupt capacity at 48 V DC safely clears large fault currents
  • Manual push-to-trip actuator allows instant circuit isolation for service
  • RoHS-compliant thermoplastic housing resists heat and vibration in harsh environments

Specifications

BrandEATON BUSSMANN

Questions about this item

Does the CB185-80 come with mounting bolts or terminal nuts, or must they be sourced separately?

The breaker uses a bolt-on flush mount with 1/4 In. -28 studs; mounting hardware and terminal nuts are not included and must be purchased separately.

Is the 80 A version the only CB185 option, or are other current ratings available in the same series?

The CB185 series includes multiple current ratings; this listing is the 80 A model, so select the rating that matches your circuit's protection requirement.

What does the 3 kA interrupt rating at 48 V DC mean for a truck or RV installation?

It indicates the breaker can safely interrupt up to 3 000 A of fault current at 48 V DC, providing protection for high-amp DC circuits in buses, RVs and trucks.

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