Blue Sea 7138 187 - Series Thermal Circuit Breaker - 40Amp [7138]

Description

187 - Series Thermal Circuit Breakers - Surface Mount

40 Amp Circuit Breaker

PN:  7138

Features:

  • Combines switching and circuit protection into a single device
  • All components meet SAE J1171 external ignition protection requirements
  • Clear, single lever operation
  • "Trip Free" design cannot be held "ON" during fault current condition
  • Waterproof
  • Recessed mounting holes for clean appearance
  • Large clearance around terminal studs accept heavy gauge wire lugs
  • Robust 5/16 terminals provide high torque connections
  • Large lever with vertical/horizontal orientation provides indication of trip status
  • Ignition protected - safe for installation aboard gasoline powered boats

Specifications  
Circuit Breaker Class: Type III - Switchable / Manual Reset - Trip Free
Type: Thermally Responsive Bi-Metal Blade
Case Material: Thermoset Polyester
Voltage Rating: 48 Volts DC Maximum
Interrupt Rating: 5,000 Amperes @12 Volts DC
  3,000 Amperes @24 Volts DC
  1,500 Amperes @42 Volts DC
Operating Temperature Range: -25C° to +82C°

WarningWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

  • Amperage: 40a
  • Box Dimensions: 2"H x 5"W x 8"L WT: 0.6 lbs
  • UPC: 632085171384
Product form

187 - Series Thermal Circuit Breakers - Surface Mount40 Amp Circuit BreakerPN:  7138Features: Combines switching and circuit protection into a single... Read more

SKU: CWR-20558
Barcode: 632085171384

4 in stock

$141.99$75.50

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    • Shipped today? Order within: Nov 14, 2025 15:00:00 -0500

    Description

    187 - Series Thermal Circuit Breakers - Surface Mount

    40 Amp Circuit Breaker

    PN:  7138

    Features:

    • Combines switching and circuit protection into a single device
    • All components meet SAE J1171 external ignition protection requirements
    • Clear, single lever operation
    • "Trip Free" design cannot be held "ON" during fault current condition
    • Waterproof
    • Recessed mounting holes for clean appearance
    • Large clearance around terminal studs accept heavy gauge wire lugs
    • Robust 5/16 terminals provide high torque connections
    • Large lever with vertical/horizontal orientation provides indication of trip status
    • Ignition protected - safe for installation aboard gasoline powered boats

    Specifications  
    Circuit Breaker Class: Type III - Switchable / Manual Reset - Trip Free
    Type: Thermally Responsive Bi-Metal Blade
    Case Material: Thermoset Polyester
    Voltage Rating: 48 Volts DC Maximum
    Interrupt Rating: 5,000 Amperes @12 Volts DC
      3,000 Amperes @24 Volts DC
      1,500 Amperes @42 Volts DC
    Operating Temperature Range: -25C° to +82C°

    WarningWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

    Specifications:

    • Amperage: 40a
    • Box Dimensions: 2"H x 5"W x 8"L WT: 0.6 lbs
    • UPC: 632085171384

    Reviews

    Blue Sea 7138 187 - Series Thermal Circuit Breaker - 40Amp [7138]

    Blue Sea 7138 187 - Series Thermal Circuit Breaker - 40Amp [7138]

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