![Weekend Sale Blue Sea 7138 187 – Series Thermal Circuit Breaker – 40Amp [7138]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/weekend-sale-blue-sea-7138-187-series-thermal-circuit-breaker-40amp-7138.webp)
Description
Product Overview
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° |
WARNING: 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
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