SKU: 43730127759

Blue Sea 7139 187 - Series Thermal Circuit Breaker - 50Amp

Sale price$87.82 Regular price$97.58
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

Blue Sea 7139 187 - Series Thermal Circuit Breaker - 50Amp187 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.


Manufacturer Part Numbers: 7139
GRP:WRO
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 43730127759

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4.4 ★★★★★
Based on 17 reviews
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Verified Purchase
Richard M. Creevey
Phoenix, US
★★★★★ 5
Speaker wire
Size: 14/2 AWG-200 FT, Color: White
Always my go to wire. And great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
Great in wall wire, easy to install
Size: 14/2 AWG-200 FT, Color: White
Ran this through studs for an in-wall 5.2 system, worked great, very easy to fish, wire threaded nicely, good copper, good connections. Easy to bend for 14 AWG.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 26, 2025
M
Verified Purchase
Michael D. Elliott
Dallas, US
★★★★★ 5
Good enough
Size: 14/2 AWG-200 FT, Color: White
It works
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
K
Verified Purchase
Kenneth Goff
Phoenix, US
★★★★★ 5
Good product
Size: 50 Feet, Style: 10 AWG
Works good, a little lite to run at distance without dropping a little
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
M
Verified Purchase
Marvin Fenner
Natrona Heights, US
★★★★★ 5
Good quality
Size: 50 Feet, Style: 10 AWG
Easy to route and connect. Seems like very good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2025

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