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Contactor and Motor Starter Auxiliaries

For motor control systems in industrial and commercial facilities, contactor and motor starter auxiliaries are among the most essential components for reliable motor operation and system integration. These auxiliary components provide additional switching contacts, status indication, and control functionality that enhance the capabilities of contactors and motor starters. Electrical.com carries an extensive selection of contactor and motor starter auxiliaries from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of manufacturing automation, HVAC systems, material handling equipment, and industrial process control applications.
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Part Number
PRICE
Manufacturer
3RH1921-1HA22
3RH1921-1HA22
In Stock
From
$35.50
Siemens
3RH1921-1KA11
3RH1921-1KA11
In Stock
From
$25.84
Siemens
3RH1921-1LA02
3RH1921-1LA02
In Stock
From
$25.61
Siemens
3RH1921-1LA11
3RH1921-1LA11
In Stock
From
$40.77
Siemens
3RH1921-1LA20
3RH1921-1LA20
In Stock
From
$37.50
Siemens
3RH1921-1MA02
3RH1921-1MA02
Limited Stock
From
Get Price
Siemens
3RH1921-2CA10
3RH1921-2CA10
In Stock
From
$12.39
Siemens
3RH1921-2DA11
3RH1921-2DA11
In Stock
From
$33.64
Siemens
3RH1921-2EA02
3RH1921-2EA02
In Stock
From
$46.18
Siemens
3RH1921-2FA04
3RH1921-2FA04
Limited Stock
From
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Siemens
3RH1921-2FA22
3RH1921-2FA22
In Stock
From
$107.10
Siemens
3RH1921-2HA22
3RH1921-2HA22
Limited Stock
From
Get Price
Siemens
3RH2921-1DA11
3RH2921-1DA11
In Stock
From
$68.91
Siemens
3RT1916-2EC21
3RT1916-2EC21
In Stock
From
$159.50
Siemens
3RT1916-2EC31
3RT1916-2EC31
In Stock
From
$66.71
Siemens
3RT1916-2ED21
3RT1916-2ED21
In Stock
From
$11.62
Siemens
3RT1916-2ED31
3RT1916-2ED31
In Stock
From
$71.82
Siemens
3RT1916-2EJ21
3RT1916-2EJ21
In Stock
From
$86.12
Siemens
3RT1916-2EJ31
3RT1916-2EJ31
Limited Stock
From
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Siemens
3RT1916-2FJ11
3RT1916-2FJ11
Limited Stock
From
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Siemens
3RT1916-2FL31
3RT1916-2FL31
Limited Stock
From
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Siemens
3RT1916-2GC51
3RT1916-2GC51
In Stock
From
$68.69
Siemens
3RT1916-2GD51
3RT1916-2GD51
Limited Stock
From
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Siemens
3RT1916-2GJ51
3RT1916-2GJ51
In Stock
From
$145.63
Siemens

Electrical.com stocks the largest inventory of contactor and motor starter auxiliaries in the world, with over 1 million square feet of new, used, surplus, and re-certified motor control components available for immediate shipment. From auxiliary contact blocks to timing modules and coil accessories, we have what you need when others say no. Our comprehensive contactor and motor starter auxiliary 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 contactor and motor starter auxiliaries serve critical applications across industrial motor control systems, manufacturing automation equipment, HVAC control systems, material handling operations, conveyor systems, pump and compressor controls, process automation installations, and commercial building mechanical systems.


Whether you're maintaining legacy equipment with obsolete auxiliary components or sourcing current production parts for new motor control installations, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need contactor and motor starter auxiliaries 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.