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Pollak 54-240 40 Amp Circuit Breaker

Manufacturer

Pollak

<h3>Pollak: Over a Century of Electro-Mechanical Engineering Excellence</h3><p><strong>Pollak</strong> has one of the most storied origins in the American auto parts industry. Founded in 1909 by Joseph Pollak as a small tool and die shop in Boston, Massachusetts, the company has spent more than 115 years evolving alongside the transportation industry — from crafting precision tools during World War I to engineering the electrical switches found in military aircraft during World War II. That heritage of precision manufacturing is woven into every product the brand produces today.</p><p>Now a part of the Standard Motor Products (SMP) family, Pollak engineers, manufactures, and distributes a wide range of electro-mechanical components — including connectors, switches, sensors, and related items — serving the heavy truck, off-road, RV, marine, industrial, and towing industries. Its facilities operate under TS16949 and ISO14001 certifications, and the brand has earned Q1 preferred status at Ford, General Motors&apos; Mark of Excellence, and Chrysler&apos;s Gold Pentastar, reflecting a deep commitment to quality that resonates across OEM and aftermarket channels alike.</p><h3>A World Leader in Towing Connectivity</h3><p>Pollak is perhaps best recognized among truck and trailer owners for its dominance in towing electrical components. The brand is widely regarded as a world leader in original equipment trailer wiring connectors, adapters, and extensions, with aftermarket offerings built to the same exacting standards as its OEM parts. Whether you&apos;re replacing a worn factory socket on a half-ton pickup or outfitting a heavy-duty rig for long-haul towing, Pollak&apos;s lineup covers the full spectrum of connection types.</p><p>For anyone managing a towing setup, <a href="/2632-trailer-wiring-adapter-connector-pollak-7495">Pollak Trailer Wiring Adapter Connectors</a> are a go-to solution. Available in configurations from 4-way flat to 7-way blade, these connectors are precision-engineered for light-duty and medium-duty trucks and SUVs, and several models come recommended directly by major vehicle manufacturers. The brand&apos;s heavy-duty plugs and accessories are designed to meet and exceed SAE J560 standards, feature floating pins for ease of alignment, and accept a wide range of wire gauges for maximum versatility.</p><p>Complementing the connector lineup, <a href="/7495-pollak-socket-assembly-10144">Pollak Socket Assemblies</a> are purpose-built for vehicle-side towing applications. Designed to withstand the harsh environment of an exposed external mount under a truck&apos;s rear bumper, Pollak sockets incorporate features like stainless steel spring lid hinges, runner gaskets to prevent moisture intrusion, and drain slots for all-weather durability — the kind of thoughtful engineering detail that has kept Pollak at the forefront of the towing industry for generations.</p><h3>Why Choose Pollak?</h3><ul><li><strong>115+ years of manufacturing expertise</strong> dating back to 1909</li><li>OEM-grade quality trusted by Ford, GM, Chrysler, Freightliner, John Deere, and more</li><li>ISO and TS16949-certified manufacturing facilities</li><li>Products engineered for heavy truck, RV, marine, towing, and agricultural applications</li><li>Aftermarket parts built to the same standards as original equipment components</li></ul><p>From the farm field to the open highway, Pollak&apos;s reputation for innovative design and dependable manufacturing makes it a trusted name for anyone who demands reliable electrical connectivity from their towing and vehicle systems.</p>

Part Number

54-240
06/01/2036 8:04 AM
Sale Price

$3.38

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Pollak 54-240 is a 40-amp automatic reset circuit breaker designed for automotive, marine, RV, and powersports electrical systems. This thermal circuit breaker provides reliable overcurrent protection for 12-volt DC circuits, automatically resetting once the fault condition is cleared and the breaker cools down.

Key Features:

  • 40-amp current rating for medium to heavy-duty applications
  • Automatic reset design eliminates the need for manual intervention
  • Thermal protection prevents damage from overcurrent conditions
  • Compact mounting design with threaded stud terminal
  • Suitable for 12V DC automotive, marine, and recreational vehicle applications
  • Durable construction for reliable long-term performance

This circuit breaker is ideal for protecting accessory circuits, lighting systems, winches, pumps, and other electrical components. The automatic reset feature makes it particularly useful for applications where manual access may be difficult or inconvenient. Simply install inline with the circuit requiring protection, and the breaker will trip when current exceeds 40 amps, then automatically reset when the overload condition is resolved.

very great price

Fast checkout

Best prices I could find anywhere! Fast shipping. Will definitley buy from again.

Excellent

It was a good price with fast delivery. They had the lowest price I found. My only comment was the shipping cost was more then I expected.

Best price on the Internet.

Thanks

Thank You

Great

Was a little hesitant to order from autoplicity at first but after numerous orders now, this and rockauto are my two go to places for parts. Best prices and fast shipping!!!

E Zee P Zee I would buy from them again.

Customer Care took care of my return and refunded the shipping after there was some order confusion. Thank you for taking care of everything!

EXCELLENT SELLER I RECEIVED EMAIL CONFORMATION OF MY ORDER IN MINUTES. MY ORDER WAS SHIPPED WITHIN A DAY AND ITEM WAS AS DESCRIBED. THE SHIPPING PRICE WAS RESONABLE AND THE ITEM PRICE WAS ONE OF THE BEST I FOUND ON THE NET! <br>THANK YOU.

Great communication from customer service , but very slow to ship order!

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