![Blue Sea 7139 187 - Series Thermal Circuit Breaker - 50Amp [7139]](https://cdn.shopify.com/s/files/1/2785/3654/products/20559XL.jpg?v=1677884375)
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- USA
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Blue Sea 7139 187 - Series Thermal Circuit Breaker - 50Amp [7139]187 Series Thermal Circuit Breakers Surface Mount 50 Amp Circuit Breaker PN: 7139 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
187 - Series Thermal Circuit Breakers - Surface Mount
50 Amp Circuit Breaker
PN: 7139
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: 50a
- Box Dimensions: 2"H x 5"W x 8"L WT: 0.6 lbs
- UPC: 632085171391
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 595 reviews
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Product Reviews
★★★★★ 5
Nice quality
Seems very good quality. Will purchase again.
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Reviewed in the United States on October 18, 2025
★★★★★ 5
Roomy
Looks even better in person. More room then I expected
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Reviewed in the United States on October 31, 2025
★★★★★ 5
Nice
Great
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Tray
This is the perfect size! I received my order sooner than expected when the first one wasn't delivered.
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Reviewed in the United States on December 17, 2025
★★★★★ 5
Beautiful, Durable Jewelry Box with Amazing Storage — Everyone Wants One!
Color: White + Gold
This jewelry box is absolutely adorable! We ordered it as a birthday gift for a little girl, but once it arrived, every girl in the house (including me!) wanted one of our own. The outside is beautiful and durable, and it comes in multiple colors. The top is lockable and includes two removable watch holders, which is such a nice touch. Inside, everything is lined with soft velvet that feels really high-quality.
There are four different drawers, each with different compartment sizes so you can organize rings, earrings, bracelets—everything. My favorite part is the two side doors that snap open to reveal space for 16 necklaces total (eight on each side). The hooks make it easy to hang them without tangling, and each side has a little pouch to catch the ends. It’s honestly the most thoughtfully designed jewelry box I’ve found at this price. Beautiful, functional, and the perfect gift!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026
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