Cooper Bussmann 'Short Stop' Type 3 manual reset thermal circuit breaker for use in either 12 or 24 volt DC electrical applications. A plastic housing with a pop-out trip mechanism makes these circuit breakers ideal for use in automotive, marine and recreational vehicles. Meets RVIA and S.A.E. J553 specifications.

Standard Circuit Breaker Boot covers the standard type automotive circuit breakers. These boots offer protection against short circuits, as well as from dirt, dust, and splash resistance.

  • Applications: Battery chargers, trucks, buses, RVs, trolling motors, etc.
  • Function Options: Auto, Manual or optional Modified Reset Circuit Breakers.
  • I.R.: 2.5kA @ 12VDC (Branch circuit protection), please contact sales for further info.
  • Voltage: 14VDC (121 Series), 28VDC (123 series)
  • Operating Temp: -40°C to 85°C, Storage Temp: -40°C to 125°C
  • Features: Ignition Protected
  • Mounting Hole: Bracket mounting holes 4.98 mm diameter.
  • Notes: Keps lock nuts included with circuit breakers.
  • Approvals: SAE J553, J1171
Maximum Voltage
28V DC
Circuit Breaker Type
Thermal trip, manual reset
Terminal Stud
#10-32 (M5)
Terminal Stud Torque
20 in-lb (2.26 Nm)
Interrupt Capacity
2500A @ 28V DC
Operating Temperature
-40°C to 85°C
0.06lb (0.03 kg)


Brand Bussmann
Shipping Weight 0.0100kg
Shipping Width 0.050m
Shipping Height 0.035m
Shipping Length 0.020m
Shipping Cubic 0.000035000m3

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