Auxiliary Contact Blocks

An auxiliary contact block is a piece of equipment that contains auxiliary contacts for a relay. A relay is a type of switch that is operated electronically, commonly with an electromagnet.

What are auxiliary contact blocks used for?

Every relay contains contacts, which are pieces of electrically conductive material, usually metal. When a pair of contacts touch, they pass an electrical current, making the switch ’closed.’ When the contacts separate, the switch is ’open,’ and the current ceases to flow.

In electromechanical relays, auxiliary contacts are often used in a relay logic circuit, or for some other part of the motor control scheme, typically switching 120 Volt AC power instead of the motor voltage. One contactor may have several auxiliary contacts.

Types of auxiliary contact blocks

Auxiliary contact blocks are used with specific relays, such as thermal overload relays and motor starter protectors. They are also differentiated by their contact configurations, such as DPNO (double pole normally open) and DPDT (double pole double throw); and in the way they are mounted, such as through a chassis mount or DIN rail mount.


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제품설명 단가 Accessory Type For Use With Contact Configuration Mounting Type Series
RS 제품 번호 192-0812
제조사 부품 번호66431
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Contact Block SACE Tmax XT SPDT - AUX-C
RS 제품 번호 192-0813
제조사 부품 번호66438
제조사ABB
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Contact Block Tmax XT SPDT - AUX-C
RS 제품 번호 192-0816
제조사 부품 번호66434
제조사ABB
₩289,603.55
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Contact Block Tmax XT SPDT - AUX-C
RS 제품 번호 192-0809
제조사 부품 번호66994
제조사ABB
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Contact Block Tmax XT SPDT - AUX-C
RS 제품 번호 192-0815
제조사 부품 번호66429
제조사ABB
₩100,404.35
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Contact Block Tmax XT SPDT - AUX-SA-C
RS 제품 번호 213-1401
제조사 부품 번호3TX4413-1A
제조사Siemens
₩32,038.50
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- Contactor relay and power contactor - - 3TX
RS 제품 번호 759-005
제조사 부품 번호LA7K0064
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Contact Block K Thermal Overload Relay - DIN Rail -