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Circuit Breakers

ABB's Circuit Breakers portfolio includes options such as Molded Case, Low Voltage, Medium Voltage Indoor Power Circuit Breakers, Miniature Circuit Breakers, Enclosed Circuit Breakers, AC Circuit Breakers for Railway, Insulated Case Circuit Breakers and Residential Circuit Breakers from brands like SACE® Tmax®, ProLine, EntelliGuard and Power Break II.

Molded Case Circuit Breakers (MCCB)

ABB offers an expansive offering of Molded case circuit breakers for your projects from brands like SACE® Tmax®, TEY Lighting Panel Circuit Breakers, Thermal Magnetic and ProLine.

SACE® Tmax® XT - ABB's newest line of MCCBs are available up to 1600A; globally certified UL/CSA/IEC
SACE® Tmax® T - A complete range of molded case circuit-breakers up to 3200 A. All the circuit-breakers, both three-pole and four-pole, are available in fixed versions.
ABB‘s SACE® FORMULA molded case circuit breaker line offers simplicity and quality in some of the smallest dimensions available.
FB100, available up to 600A with interruption capacities up to 200kAIC.
15-125A; Designed for use in lighting panel applications. Internal accessories and mounting bases make them suited for individual mounting as well.
15 to 150A. Our industrial thermal-magnetic E150 breakers provide a proven, cost-effective solution.
The ProLine Circuit Breaker is the industry's first UL approved current limiting breaker to be used in a panelboard application.
Retrofit Kit for Spectra™ Plug-In and Bolt-on Panelboards & Switchboards

Enclosed Circuit Breakers

ABB offers a variety of NEMA enclosure types designed to protect against a variety of environmental conditions in non-hazardous locations.
Outdoor NEMA 3R Enclosed Circuit Breakers range from 100A to 200A (100A, 125A, 150A, and 200) and AIC rating of 10 or 22 KAIC. Meet NEC 2020+ outdoor disconnect requirements.

Low Voltage Power Circuit Breakers

Air circuit breakers up to 6300A. From circuit breaker to power manager
Advanced retrofill solutions for AK, AKR, WavePro power circuit breakers
Retrofill existing metal frame breaker cubicles with an EntelliGuard G breaker. Offers the option to include the EntelliGuard TU Trip Unit.

Miniature Circuit Breakers & Supplementary Protectors

The S300P MCB is available in B, C, D, K, and Z characteristics from 0.5 to 63A.
The ST200 MTR MCBs are specifically designed for use in traction rolling stock applications such as passenger trains, freight and line maintenance, and subways.
DS201 UL is an RCBO that combines 30 mA RCD and MCBs with trip curves B, C, or K. DS201 UL can be equipped with an auxiliary contact for bottom fitting for retrofitting and…
E90 is the ideal protection against short-circuits and overloads for a wide range of applications. E90 is designed for quick, flexible, and error-proof installation.
UL1077 MCBs feature two tripping mechanisms, the delayed thermal tripping mechanism and the magnetic tripping mechanism, to ensure electrical safety in multiple applications.
UL489 MCBs feature two tripping mechanisms, the delayed thermal tripping mechanism and the magnetic tripping mechanism, to ensure electrical safety in multiple applications.
Q-Line Miniature Circuit Breakers series include TH(H)QC cable-in, cable-out (lug-lug), TH(H)QB in bolt-on, and TH(H)QB-RC ring lug versions. All of them are available in 15A…
RCDs are the safest device to detect and trip against ground faults, thus ensuring protection against electric shock caused by indirect contacts.

Residential Circuit Breakers

100 to 225A. THQMV Main breakers are configured to allow top or bottom feed without modification and can be added to PowerMark Gold convertible (TLM) load centers.
15 to 200A. Choose from 1/2" THQP or 1" THQL breakers with options for 1 to 3 poles. THQP breakers allow the use of smaller load centers.
AFCI is a compact and easy to install solution designed to eliminate Arc faults. AFCI has the flexibility to address shared and mixed neutrals.
Ground Fault Circuit Interrupter with Self-Test (GFCI) available as 1 or 2 poles and up to 50 A to protect 120/240 Vac applications.
DFCI combines both Ground Fault and Combination Arc Fault (GFCI & AFCI) protection in a simple to apply and cost-effective solution.

Insulated Case Circuit Breakers

800 to 4000A. This breaker provides reliable, flexible and easy-to use circuit protection. Utilizes the EntelliGuard* TU trip unit.
Serves the needs of end-users with both fixed-mounted and draw-out versions of the Power Break I breakers. Field upgradeable to EntelliGuard* TU trip unit.

DC High Speed Circuit Breakers

2600 to 8000A. Single Pole. For use in high energy, high reliability DC power distribution systems.

Medium Voltage Circuit Breakers

The ADVAC series is a complete line of ANSI-rated vacuum circuit breakers with a spring-charged mechanism.
A new 38 kV class medium voltage vacuum circuit breaker with the EL mechanism and best-in-class vacuum interrupter technology up to 40.5 kV, 3000 A, and 40 kA.
ADVAC-G provides full protection for generator applications in a small footprint
The AMVAC series utilizes magnetic actuation technology to provide a more reliable and longer-lasting solution  
Single or two-phase outdoor vacuum breaker with a magnetic actuator for railway power supply (RPS)
Single-pole and double pole outdoor vacuum load break switch and vacuum circuit-breaker with magnetic actuator for railway applications.
Single-phase indoor vacuum breaker with magnetic actuator for railway power supply
Medium voltage poles with vacuum interrupters embedded for circuit breaker construction, up to 40.5 kV, 4000 A, 50 kA
Proven in thousands of application ABB vacuum interrupters are the perfect core component for every switching device
VD4-AF offers safer and more relentless steel furnace operation and protection
A narrow MV circuit breaker with EL spring mechanism and new recyclable embedded poles up to 15 kV, 40 kA, 2000 A.
VD4-CS provides noise-free power quality by safe and reliable switching and protection of capacitor banks
VD4G offers a small footprint and full protection for generator switching applications.
VM1 utilizes a magnetic drive that activates the moving contacts of interrupters and integrates all the functions of a traditional drive.
Service trucks for temporary inspection, maintenance, and earthing of medium voltage panels

Medium Voltage Outdoor Dead Tank Breakers

R-MAG offers a maintenance-free, magnetically-actuated mechanism that provides unparalleled reliability and safety in the field

Remote Racking Devices

A dedicated device to remotely perform circuit breaker rack-in/rack-out operations for the Emax 2, increasing the safety for personnel.
Electrically operated safety device for EntelliGuard G breakers.

Previous Generation Circuit Breakers

Available in 3- and 4-pole designs rated from 400A to 6000A, with fault interruption ratings up to 200kAIC.