U.S. Ground
Parcel Shipments
See Shipping Policy
View Cart
The RSPAdvantage
Home Breakers, Fuses & Circuit Protection Miniature Circuit Breakers Square D Schneider Electric Miniature Circuit Breakers

Square D Miniature Circuit Breakers

filter_list

Square D by Schneider Electric has created four different lines of miniature circuit breakers for residential and industrial circuit protection. They are: lighting panelboard miniature circuit breakers, Homeline miniature circuit breakers, QO and QOB miniature circuit breakers and QOU unit mount circuit breakers.

A special feature provided by most of Square D miniature circuit breakers is the VISI-TRIP indication. When the circuit breaker has tripped, the handle moves to the center position and the red VISI-TRIP indicator appears in a window in the circuit breaker case. Trip indication immediately provides a visual indication that the circuit breaker has been tripped and interrupted the circuit.

Lighting panelboard miniature circuit breakers are designed to be used with the NF series lighting panelboards. NF lighting panelboards are used for commercial and industrial lighting and electrical distribution. Lighting panelboard miniature circuit breakers have current ratings from 15 to 125 Amps.

Homeline miniature circuit breakers are designed for fast installation and superior circuit protection. They have a full range of amperages, poles and advanced function devices that offer Arc Fault, Combination Arc Fault (CAFI), Ground Fault (Class A, GFCI) and Dual Function (CAFI and GFCI) protection.

QO and QOB miniature circuit breakers come in a complete range of amperages and interrupting ranges to fit into various QO distribution panels. Plug-on QO circuit breakers are used in NQ panelboards, QO load centers or Speed-D switchboard distribution panels. Bolt-on QOB are used in NQOD panelboards. 

QOU unit mount circuit breakers are used for overcurrent protection and switching on both AC and DC electrical systems. They are available for flush, surface or DIN rail mounted applications in one, two or three pole constructions.

Products

Products Per Page: Sort By:
Schneider Electric EDB24060 MINIATURE CIRCUIT BREAKER 480Y/277V 100A
Schneider Electric GV4ADM1111 Motor circuit breaker, TeSys GV4, 2 normally open and 2 normally closed contacts, SDx contact module, GV4PEM
Schneider Electric GV4ADM1111 Motor circuit breaker, TeSys GV4, 2 normally open and 2 normally closed contacts, SDx contact module, GV4PEM
$526.50
Motor circuit breaker, TeSys GV4, 2 normally open and 2 normally closed contacts, SDx contact module, GV4PEM
Schneider Electric GV4PB02S Motor circuit breaker, TeSys GV4, 3P, 2A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB02S Motor circuit breaker, TeSys GV4, 3P, 2A, Icu 100kA, thermal magnetic, multifunction, UL489
$762.00
Motor circuit breaker, TeSys GV4, 3P, 2A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB03S Motor circuit breaker, TeSys GV4, 3P, 3.5A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB03S Motor circuit breaker, TeSys GV4, 3P, 3.5A, Icu 100kA, thermal magnetic, multifunction, UL489
$762.00
Motor circuit breaker, TeSys GV4, 3P, 3.5A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB07S Motor circuit breaker, TeSys GV4, 3P, 7A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB07S Motor circuit breaker, TeSys GV4, 3P, 7A, Icu 100kA, thermal magnetic, multifunction, UL489
$762.00
Motor circuit breaker, TeSys GV4, 3P, 7A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB12S Motor circuit breaker, TeSys GV4, 3P, 12.5A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB12S Motor circuit breaker, TeSys GV4, 3P, 12.5A, Icu 100kA, thermal magnetic, multifunction, UL489
$762.00
Motor circuit breaker, TeSys GV4, 3P, 12.5A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB12N Motor circuit breaker, TeSys GV4, 3P, 12.5A, Icu 50kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB12N Motor circuit breaker, TeSys GV4, 3P, 12.5A, Icu 50kA, thermal magnetic, multifunction, UL489
$738.00
Motor circuit breaker, TeSys GV4, 3P, 12.5A, Icu 50kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB25S Motor circuit breaker, TeSys GV4, 3P, 25A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB25S Motor circuit breaker, TeSys GV4, 3P, 25A, Icu 100kA, thermal magnetic, multifunction, UL489
$826.50
Motor circuit breaker, TeSys GV4, 3P, 25A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB25N Motor circuit breaker, TeSys GV4, 3P, 25A, Icu 50kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB25N Motor circuit breaker, TeSys GV4, 3P, 25A, Icu 50kA, thermal magnetic, multifunction, UL489
$762.00
Motor circuit breaker, TeSys GV4, 3P, 25A, Icu 50kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB50S Motor circuit breaker, TeSys GV4, 3P, 50A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB50S Motor circuit breaker, TeSys GV4, 3P, 50A, Icu 100kA, thermal magnetic, multifunction, UL489
$826.50
Motor circuit breaker, TeSys GV4, 3P, 50A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB50N Motor circuit breaker, TeSys GV4, 3P, 50A, Icu 50kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB50N Motor circuit breaker, TeSys GV4, 3P, 50A, Icu 50kA, thermal magnetic, multifunction, UL489
$762.00
Motor circuit breaker, TeSys GV4, 3P, 50A, Icu 50kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB80S Motor circuit breaker, TeSys GV4, 3P, 80A, Icu 100kA, thermal magnetic, multifunction, UL489
Schneider Electric GV4PB80S Motor circuit breaker, TeSys GV4, 3P, 80A, Icu 100kA, thermal magnetic, multifunction, UL489
$954.00
Motor circuit breaker, TeSys GV4, 3P, 80A, Icu 100kA, thermal magnetic, multifunction, UL489

 

Trip Curve Basics Part 1

There are two critical elements in miniature circuit beakers.

Bimetal strip

This strip has two dissimilar metals attached to one another. When a prolonged overcurrent occurs, these metals begin to bend. Because the metals are different, the rate at which they bend is different, therefore causing the strip to bend. If this bending occurs long enough, the bending strip will disrupt the electrical contacts inside the breaker, causing it to trip.

Coil or solenoid

The coil or solenoid is designed for larger overcurrent events like a short circuit or lightning strike. When a large overcurrent event occurs, the plunger in the solenoid is actuated, thereby tripping the breaker.

What is a trip curve?

It is both the prolonged overcurrent protection from the bimetal strip and the higher spikes in voltage and current protection from the solenoid that make up the circuit breakers trip curve. How fast or slow these events occur determines the shape of the curve. A trip curve is simply a graphical representation of the expected behavior of a circuit protection device, in this case, a circuit breaker.

This graphical representation looks at two separate pieces of data to provide the information needed to understand when a particular breaker will trip. The first is time, more specifically, the time the circuit breaker experiences a certain amount of overcurrent. The second is the amount of current. In this case, how much more current is passing through the breaker than the protection device is actually rated for.

  • Payment Methods
  • Follow Us