187-Series Surface-Mount Circuit Breakers

Thermal circuit breakers provide heavy duty circuit protection for 25 to 200 Amp loads when switching and circuit protection are both required.

• Single lever operation—clearly visible, large lever with vertical/horizontal orientation provides indication of trip status
• "Trip Free" design cannot be held "ON" during fault current condition
• Self-trimming case eliminates need for mounting panels or trim bezels
• Large clearance around terminal studs accepts up to 1/0 AWG lugs
• Recessed mounting holes for clean appearance
• Robust 5/16"-18 terminals provide high torque connections
• Meets SAE J1171 external ignition protection requirements

Specifications

• Maximum Voltage: 48V DC
• Mounting: Surface Mount
• Circuit Breaker Type: Thermally responsive Bi-metal blade
• Circuit Breaker Class: Type III - switchable/manual reset - trip free
• Terminal Stud Torque: 75 in-lb (8.47 Nm)
• Interrupt Capacity, The fault current that a device, normally a fuse or circuit breaker is capable of breaking without damage: 5000A @ 12V, 3000A @ 24V, 1500A @ 42V
• Minimum Operating Temperature: -40° C
• Maximum Operating Temperature: 85° C
• Case Material: Thermoset Polyester
• Mounting Hole: Accept #10 (M5) Screw
• Terminal Stud Size: 5/16" - 18
• Weight: 0.58lb (0.26 kg)

Dimensional Drawing

Trip Delay Curve