Welcome to NABCO
BREAKERS ARE JUST THE START. NABCO warehouses are packed with the electrical control and safety products your customers need to recover from an outage sooner, perform routine
Circuit Breaker Retrofit and Rebuilding
At Quad Plus, we specialize in retrofitting and rebuilding industrial circuit breakers to extend their life and improve their performance, while
76 Circuit Breaker Manufacturers in 2025
This section provides an overview for circuit breakers as well as their applications and principles. Also, please take a look at the list of 76 circuit breaker manufacturers and their company
CBIONE
Trained and experienced technicians perform top quality shop services that provide full inspections, mechanical operation, contact resistance testing, electronic solid-state
Quad Breakers
A quad breaker, also known as a double-pole tandem breaker or "quad," is a powerful circuit breaker that combines two trip units into one. It controls four separate circuits in the same
Circuit Breaker Retrofit and Rebuilding
At Quad Plus, we specialize in retrofitting and rebuilding industrial circuit breakers to extend their life and improve their performance, while maintaining the integrity of the original design.
Quad Circuit Breakers — Circuit Breaker Direct LLC
Our collection of quad breakers includes durable, UL-listed models from leading manufacturers. Compact and efficient, quad breakers help maximize panel space while maintaining safety and
Tandem & Quad Circuit Breakers | ABB Electrification U.S.
Tandem and Quad residential circuit breakers provide the ultimate solution for expanding electrical capacity with ease of installation and are compatible with all new and existing Single
Circuit Breaker Service Experts
Quad Plus offers comprehensive circuit breaker services for industrial and commercial power systems. We support low-, medium-, and high-voltage circuit breakers from all major OEMs,
Quad Circuit Breakers
We carry Quad Circuit Breakers from Square D, Eaton, Cutler-Hammer, Siemens, ITE, Gould and other top brands. Get started now!
Residential Quadplex Circuit Breakers
CTL Quadplex Breaker with Rejection Tab, 2-Pole, 10 kAIC, 2-Pole 30 Amp Outer Indep Trip and 2-Pole 40 Amp Center Indep Trip, Requires (2) 1-inch spaces, Wire Size #14-4, 120/240 VAC.
Tandem & Quad Circuit Breakers | ABB
Tandem and Quad residential circuit breakers provide the ultimate solution for expanding electrical capacity with ease of installation and are