Designed with a lightweight IP66 rated protective plastic housing and clear mounting holes makes attaching this 15-amp shortstop circuit breaker a snap; simply mount the circuit breaker using the right angle/ perpendicular bracket and attach the wires, and you’re set. It meets the Society of Automotive Engineers J553 standard and is ideal for protecting power windows, headlights, sunroofs, taillights, door locks as well as a variety of other applications within the automotive industry. This 15-amp automatic/cycling shortstop circuit breaker is also available with a heavy-duty metal plated housing,46315. 


  • 15-amp shortstop cycling/ automatic (Type I) circuit breaker
  • Features a right angle/ perpendicular bracket for easy mounting
  • Designed to cycle continuously during over current and short-circuit conditions until the source of the over current is removed
  • Features (2) 10-32 stud terminals for easy wire attachment
  • Engineered with an IP66 rated protective plastic housing for superior vibration resistance
  • Also available with a heavy-duty metal plated housing
  • SAE Standard J553 compliant
  • Also available in Non-Cycling (Type II) and Manual Reset (Type III) circuit breakers

Technical Specifications 

  • Manufacturer: Cooper Bussmann
  • Manufacturer Part Number: 121B15-A2P-KA
  • Amps: 15
  • Type: Shortstop
  • Reset Method: Type I (Automatic)
  • Mounting Style: Right Angle Bracket
  • Housing Material: Metal
  • Terminal Connection: 10-32 Studs
  • SAE Compliance: J553