brands

attributes.Number_of_Contacts

attributes.Normal_State_Configuration

attributes.Mounting_Style

attributes.Range

attributes.Series

attributes.Contact_Current_Rating

attributes.Terminal_Type

attributes.Pole_and_Throw_Configuration

attributes.Contact_Voltage_Rating

attributes.Better_World_Product

attributes.Minimum_Operating_Temperature

attributes.Maximum_Operating_Temperature

attributes.Better_World_Verification

Allen Bradley Auxiliary Contact Block, 4 Contact, 1NC/3NO, Front Mounting, 100-FC31 100-E Contactors

Allen Bradley Auxiliary Contact, 1 Contact, 1NO, Side Mount, Allen-Bradley 100-E

Allen Bradley Auxiliary Contact, 1 Contact, Side Mount, Allen-Bradley 100-E

Allen Bradley Auxiliary Contact Block, 2 Contact, 1NC, Front Mounting, 100-FAL22 100-E Contactors

Allen Bradley Auxiliary Contact, 1 Contact, 1NC, Side Mount, Allen-Bradley 100-ES1-BO1

Allen Bradley Auxiliary Contact Block, 2 Contact, 1NC, Panel, 100-CRFA11


Auxiliary contacts, also known as auxiliary contactors are electromechanical devices used in conjunction with primary switching equipment such as contactors, circuit breakers, push button controllers, switches, and relays. These secondary switching devices are physically connected to the main switching equipment and work at the same time. The add-on accessories are available in a range of contact configurations and mounting styles such as a front mount or DIN rail mount and a range of terminal types including screw terminals, screw clamp terminals, and cage clamp terminals making it easy to find the right contact for the application. 

Auxiliary contacts are affixed to the main contacts and change state when the main contacts do. They pass the data from the circuit to a logic controller, which in turn gives instructions to the linked devices about whether to turn on or off. Alternatively, they can be used as a standalone hardware control unit. Auxiliary contacts are available in a variety of mounting styles such as a front mount or DIN rail mount and a range of terminal types including screw terminals, screw clamp terminals, and cage clamp terminals making it easy to find the right contact for the application. For more information see our[Auxiliary Contacts Guide](https://uk.rs-online.com/web/content/discovery/ideas-and-advice/auxiliary-contacts-guide).

### Types of Auxiliary Contacts 
- **Normally Open (NO)**
- **Normally Closed (NC)**
- **Convertible (NO/NC)**

RS offer an extensive range of high-quality auxiliary contact blocks from industry-leading brands including [Schneider Electric](https://uk.rs-online.com/web/c/automation-control-gear/contactors-auxiliary-contacts/auxiliary-contacts/?if=schneider-auxiliary-contacts ), [Siemens](https://uk.rs-online.com/web/c/automation-control-gear/contactors-auxiliary-contacts/auxiliary-contacts/?if=siemens-auxiliary-contacts ), [ABB](https://uk.rs-online.com/web/c/automation-control-gear/contactors-auxiliary-contacts/auxiliary-contacts/?if=abb-auxiliary-contacts ), Lovato, Eaton, and of course RS Pro.



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Bradley Auxiliary Contacts

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