✨ Get 20% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Portable Blue Sea 187-series 50 Amp Circuit Breaker Surface Mount Best Choice [Y3whvuMp]

$20.99 $67.99 -69%

Blue Sea 187-Series 50 Amp Circuit Breaker The Blue Sea 187-Series 50 Amp Circuit Breaker is a versatile and reliable solution for your electrical protection needs. This surface mount circuit breaker combines switching and circuit protection into a s

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

Blue Sea 187-Series 50 Amp Circuit Breaker

The Blue Sea 187-Series 50 Amp Circuit Breaker is a versatile and reliable solution for your electrical protection needs. This surface mount circuit breaker combines switching and circuit protection into a single device, making it an essential component for any electrical system. With its clear, single lever operation and "Trip Free" design, this circuit breaker ensures safety and ease of use in any application.

Key Features and Specifications

The Blue Sea 187-Series Circuit Breaker, model 7139-BSS, boasts several key features that set it apart from other circuit breakers. It features a robust 5/16 M8 terminal for high torque connections and a large lever with vertical/horizontal orientation, providing clear indication of trip status. This circuit breaker is also ignition protected, making it safe for installation aboard gasoline-powered boats. Its specifications include an amperage rating of 50A and a maximum voltage of 48vDC, with a thermally responsive bi-metal blade for reliable operation. The mounting is surface mount, and it meets SAE J1171 external ignition protection requirements.

Practical Applications and Benefits

The Blue Sea 187-Series 50 Amp Circuit Breaker is ideal for a wide range of applications, including marine, automotive, and industrial settings. Its waterproof design and recessed mounting holes for a clean appearance make it suitable for use in harsh environments. The large clearance around terminal studs allows for heavy gauge wire lugs, ensuring a secure connection. With a minimum operating temperature of -40° C and a maximum operating temperature of 85° C, this circuit breaker is designed to withstand extreme conditions. Its high interrupt capacity of 5000A @ 12V, 3000A @ 24V, and 1500A @ 42V ensures that it can handle high fault currents safely. This circuit breaker is the perfect choice for anyone looking for a reliable and durable solution for their electrical protection needs.

What Our Customers Say

December 28, 2025

Absolutely no complaints!

I'm pleased with the quality.

- Bridget D..

December 28, 2025

Absolutely no complaints!

Very pleased with the quality.

- Lillian Y..

December 28, 2025

Absolutely no complaints!

I am really happy with my purchase.

- Sherry S..

Write a Review

You Might Also Like

Discover more great products from our collection.

High grade teajar gift box

High grade teajar gift box

(268)
$29.99 $95.99 -69%
BRACKET FRONT TRANS MOUNT

BRACKET FRONT TRANS MOUNT

(893)
$63.99 $204.99 -69%
MARS 61691

MARS 61691

(958)
$83.99 $268.99 -69%
Maria - Wall Sconce - Gold

Maria - Wall Sconce - Gold

(573)
$29.99 $95.99 -69%

Copyright 2025 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY