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Auxiliary

For circuit breaker systems in power distribution and control applications, auxiliaries are among the most essential components for providing additional switching contacts and control functionality. Auxiliary circuit breakers provide supplementary contacts that enable remote monitoring, status indication, and control integration with other electrical systems and automation equipment. Electrical.com carries an extensive selection of auxiliary circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of industrial control panels, building automation systems, power distribution equipment, and process control applications.
SORT BY
Part Number
PRICE
Manufacturer
A2X3PK
A2X3PK
In Stock
From
$192.02
Eaton
K7AS
K7AS
In Stock
From
$931.79
ABB
S29450
S29450
In Stock
From
$76.43
Square D
A01JLD64
A01JLD64
In Stock
From
$279.77
Siemens
A02JLD64
A02JLD64
In Stock
From
$179.54
Siemens
A1X1RPKFDE
A1X1RPKFDE
In Stock
From
$231.91
Cutler Hammer
A2X2LTK
A2X2LTK
In Stock
From
$262.57
Cutler Hammer
A2X4PK
A2X4PK
In Stock
From
$293.48
Eaton
AAL3RPK
AAL3RPK
In Stock
From
$246.30
Cutler Hammer
CQDA1
CQDA1
In Stock
From
$144.67
Siemens
FAS10RW
FAS10RW
In Stock
From
$48.84
General Electric
KT3AS
KT3AS
In Stock
From
$134.20
ABB
MA11212
MA11212
In Stock
From
$189.08
Square D
MA11286
MA11286
In Stock
From
$112.95
Square D
MA11352
MA11352
In Stock
From
$128.33
Square D
TKMAAS2AB2
TKMAAS2AB2
In Stock
From
$156.34
General Electric
1371D72G03
1371D72G03
In Stock
From
$364.35
Cutler Hammer
1372D35G03
1372D35G03
In Stock
From
$549.93
Cutler Hammer
29450
29450
In Stock
From
$54.25
Weidmuller
K5AS
K5AS
In Stock
From
$94.51
Asea Brown Boveri
TEDAS2AB2R
TEDAS2AB2R
In Stock
From
$231.26
General Electric
140G-G-EA1R1J
140G-G-EA1R1J
In Stock
From
$184.61
Allen-Bradley
140U-H-EA1
140U-H-EA1
In Stock
From
$41.64
Allen-Bradley
3VL9800-2AC00
3VL9800-2AC00
In Stock
From
$193.92
Siemens

Electrical.com stocks the largest inventory of auxiliary circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified circuit breaker components available for immediate shipment. From auxiliary contacts to trip units and accessory modules, we have what you need when others say no. Our comprehensive auxiliary circuit breaker inventory spans all configurations and ratings from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our auxiliary circuit breakers serve critical applications across power distribution systems, industrial control panels, switchgear installations, motor control centers, electrical substations, manufacturing facilities, and commercial building electrical systems.


Whether you're maintaining legacy equipment with obsolete auxiliary components or sourcing current production parts for new installations, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need auxiliary circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.