Auxiliary Contacts

Auxiliary Contacts are available at Mouser from leading manufacturers. Mouser is an authorized distributor for many auxiliary contact manufacturers including ABB, Eaton & Siemens. 
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Please view our large selection of auxiliary contacts below.
Results: 307
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 Mfr.
Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS Type
Contact Form
For Use With
Voltage Rating
Current Rating
Series
Eaton Electrical Auxiliary Contacts AUX FRDM SZ00-2, A-K TOP MTD 2NO-1NC
Datasheet
1In Stock
Min.: 1
Mult.: 1
Starters and Contactors Freedom NEMA
ABB Auxiliary Contacts ISOLATOR SWITCH 1-NO 16A 250V
20In Stock
6Expected 5/19/2026
Min.: 1
Mult.: 1
SPST-NO 250 VAC 16 A
ABB Auxiliary Contacts CONTACTO AUXILIAR N.O. 5In Stock
Min.: 1
Mult.: 1
1 NO 300 Line Starters
Siemens Auxiliary Contacts AUX. SWITCH 3NO+1NC FOR S00 SPRING
Datasheet
377In Stock
Min.: 1
Mult.: 1

3 NO + 1 NC 690 VAC 10 A 3RH2
ABB Auxiliary Contacts E211 ON OFF SWITCH 2NO 32A
44In Stock
Min.: 1
Mult.: 1
2 NO 250 VAC to 400 VAC 32 A
Siemens Auxiliary Contacts AUXILIARY SWITCH BLOCK,1NO+1NC,SZ S0..S3
Datasheet
56In Stock
Min.: 1
Mult.: 1

1 Form C (SPDT-NO, NC) 500 VAC 10 A 3RH19
Siemens Auxiliary Contacts AUX. SWITCH 2NO+2NC FOR S00 & S0 SCREW
Datasheet
66In Stock
Min.: 1
Mult.: 1

2 NO + 2 NC 690 VAC 10 A 3RH2
Siemens Auxiliary Contacts AUX. SWITCH 2NO+2NC FOR S00 & S0 SCREW
Datasheet
65In Stock
Min.: 1
Mult.: 1

2 NO + 2 NC 690 VAC 10 A 3RH2
Siemens Auxiliary Contacts TRANSVERSE AUX. SWITCH 1NO + 1NC
Datasheet
93In Stock
Min.: 1
Mult.: 1

1 Form C (SPDT-NO, NC) 3RV2
Schneider Electric Auxiliary Contacts MOLDED CASE CIRCUIT BREAKER 600V 400A
Datasheet
1In Stock
Min.: 1
Mult.: 1
3 NO + 1 NC LC1D09 to LC1D150 contactors
Eaton Electrical Auxiliary Contacts AUX FRDM SZ00-2, A-K MTD 1NO
Datasheet
5In Stock
Min.: 1
Mult.: 1
Side Mounted Starters and Contactors Freedom NEMA
Eaton Electrical Auxiliary Contacts AUX CONT FRDM SZ3 L-N BASE AUX 1NO
Datasheet
4In Stock
Min.: 1
Mult.: 1
Side Mounted Starters and Contactors Freedom NEMA
Eaton Electrical Auxiliary Contacts AUX CONT FRDM SZ3 L-N BASE AUX 1NO-1NC
Datasheet
3In Stock
Min.: 1
Mult.: 1
Side Mounted Starters and Contactors Freedom NEMA
Eaton Electrical Auxiliary Contacts AUX CONT FRDM SZ00-2, A-K MTD 2NO
Datasheet
6In Stock
Min.: 1
Mult.: 1
Side Mounted Starters and Contactors Freedom NEMA
Eaton Electrical Auxiliary Contacts AUX CONT FRDM SZ4,5 P-S BASE AUX 1NO-NC
Datasheet
4In Stock
Min.: 1
Mult.: 1
Side Mounted Starters and Contactors Freedom NEMA
Eaton Electrical Auxiliary Contacts AUX CONT FRDM SZ00-2, A-K TOP MTD 3NO1NC
Datasheet
1In Stock
Min.: 1
Mult.: 1
Starters and Contactors Freedom NEMA
ABB Auxiliary Contacts FRNT MNT NO LEADING AUX, AF09-AF38
Datasheet
5In Stock
Min.: 1
Mult.: 1
Contactors, AF09-AF38 Series
ABB Auxiliary Contacts ISOLATOR SWITCH 2-NO 16A 250V
1In Stock
5Expected 6/25/2026
Min.: 1
Mult.: 1
2 NO 250 VAC 16 A
ABB Auxiliary Contacts PUB SW 1NO/1NC RED LENS
4In Stock
Min.: 1
Mult.: 1
1 NO + 1 NC 250 VAC 16 A
ABB Auxiliary Contacts CONTROL SW 1NO-1NC 16A 250V
10In Stock
Min.: 1
Mult.: 1
1 NO + 1 NC 250 VAC 16 A
ABB Auxiliary Contacts CONTROL SW 2NO-2NC 16A 250V
7In Stock
Min.: 1
Mult.: 1
2 NO + 2 NC 250 VAC 16 A
Siemens Auxiliary Contacts AUXILIARY FRONT,SO-S3, 1NC
Datasheet
18In Stock
Min.: 1
Mult.: 1

SPST-NC 690 VAC 10 A 3RH19
Siemens Auxiliary Contacts AUXILIARY FRONT, 1NO
Datasheet
15In Stock
Min.: 1
Mult.: 1

SPST-NO 690 VAC 10 A 3RH19
Siemens Auxiliary Contacts AUXILIARY SWITCH,SCREW TERMINAL,1NO,1NC
Datasheet
6In Stock
Min.: 1
Mult.: 1

1 Form C (SPDT-NO, NC) 500 VAC 10 A 3RH19
Siemens Auxiliary Contacts AUXILIARY SIDE,2ND S3,1NO&1NC
Datasheet
4In Stock
Min.: 1
Mult.: 1

1 Form C (SPDT-NO, NC) 500 VAC 10 A 3RH19