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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
PA11212
PA11212
In Stock
From
$147.18
Square D
PA11286
PA11286
In Stock
From
$283.47
Square D
PA11364
PA11364
In Stock
From
$254.66
Square D
SPBAUX164
SPBAUX164
In Stock
From
$1,828.98
Cutler Hammer
TFKASA6AB2L
TFKASA6AB2L
In Stock
From
$68.34
General Electric
TQDAS2AB1RS
TQDAS2AB1RS
In Stock
From
$140.06
General Electric
140G-H-EA1R1B
140G-H-EA1R1B
In Stock
From
$376.22
Allen-Bradley
140U-K-EA1
140U-K-EA1
In Stock
From
$1,104.73
Allen-Bradley
140U-K-EA2
140U-K-EA2
In Stock
From
$296.89
Allen-Bradley
3RV1901-2C
3RV1901-2C
In Stock
From
$17.18
Siemens
3VA9978-0AA11
3VA9978-0AA11
In Stock
From
$124.34
Siemens
3VA9978-0AA21
3VA9978-0AA21
In Stock
From
$248.46
Siemens
KXTAAUX
KXTAAUX
In Stock
From
$48.11
ABB
KXTAAXC2QSYFP
KXTAAXC2QSYFP
In Stock
From
$221.35
ABB
KXTAAXCQSYFP
KXTAAXCQSYFP
In Stock
From
$286.86
ABB
NA11352
NA11352
In Stock
From
$87.41
Square D
PDG5X1AC
PDG5X1AC
In Stock
From
$423.00
Eaton
PDGXAC
PDGXAC
In Stock
From
$258.40
Eaton
PDGXXB
PDGXXB
In Stock
From
$74.15
Cutler Hammer
SB4AS2
SB4AS2
In Stock
From
$399.17
Siemens
SPAS240AB12D
SPAS240AB12D
In Stock
From
$691.22
General Electric
SPAS600AB8
SPAS600AB8
In Stock
From
$374.71
General Electric
SPBAUX162
SPBAUX162
In Stock
From
$153.90
Westinghouse
TPAS2AB1
TPAS2AB1
In Stock
From
$466.58
General Electric

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.