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Small silver rectangular automotive circuit breaker with blade terminals

Bussmann

Bussmann CB212-25 Automotive Circuit Breaker 25A 12V

SKU CH-C4YV-2234X

Protects 12 V DC circuits with a 25 A plug-in breaker that resets automatically and fits ATM mini-fuse sockets

  • 25 A continuous protection for 12 V DC circuits
  • Modified reset restores power without replacing the breaker
  • 225 A interrupt rating at 14 V DC handles severe faults
  • SAE J553 compliant design meets automotive safety standards
  • Thermoplastic body with silver cover resists heat and vibration

Automotive Circuit Breaker 25 A

The Bussmann CB212-25 is a 25 A automotive circuit breaker designed for 12 V DC vehicle electrical systems. It fits directly into an ATM mini fuse connector for plug-in mounting. The thermoplastic body with a silver metal cover provides durability in harsh under-hood conditions. It suits technicians and owners protecting accessory circuits in cars, trucks or recreational vehicles.

SAE J553 Standard Limits

The breaker meets SAE J553 and carries a 225 A interrupt rating at 14 V DC. It is rated for 25 A continuous current at 12 V DC only. Circuits exceeding this voltage or current require a different protection device. The modified reset function means the breaker does not automatically restore power after a fault.

Plug-In Installation Notes

Installation is a simple push into the existing ATM fuse block; no tools or wiring changes are needed. The compact size of 0.25 in height, 0.5 in width and 0.25 in depth fits tight fuse panels. A common issue is selecting the wrong amperage for the load, which causes nuisance trips or inadequate protection. Ensure the circuit current matches the 25 A rating before fitting.

How it compares

Measured against everything we stock in Trim Removal & Body Work Tools, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 94% of the 340 comparable items (median $26.99).

Specifications

Product
Brand nameBUSSMANN

Questions about this item

Which amperage version of the CB212 series should I select for a 25 A circuit?

Choose the CB212-25 model; it is rated for 25 A at 12 V DC and plugs directly into an ATM mini fuse connector.

What does the 225 A interrupt rating mean when the breaker is installed in a vehicle?

It can safely interrupt a short-circuit current up to 225 A at 14 V DC, protecting wiring and components from catastrophic fault current.

How does the SAE J553 standard affect the breaker's compatibility with my fuse block?

Compliance with SAE J553 confirms the device meets the industry specification for plug-in automotive circuit breakers, ensuring it fits standard ATM fuse blocks.

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