Contactors & Relays – Mouser United Kingdom

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SIRIUS 3RH2 4- & 8-Pole Contactor Relays

Siemens SIRIUS 3RH2 4- and 8-Pole Contactor Relays are available with screw or spring-loaded terminals. The basic unit contains four contacts with terminal designations according to EN 50011. Siemens 3RH2 Contactor Relays feature high contact stability at low voltages and currents. This performance is suitable for solid-state circuits with currents ≥1mA at a voltage of ≥17V. 3RH21 Coupling Contactor Relays for Switching Auxiliary Circuits are tailored to the special requirements of working with electronic controls.

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Part #

Contactor Accessories AUX. SWITCH 3NO+1NC FOR S00 SPRING

3RH29112HA31
Siemens
1: £36.47
377In Stock

Mfr. Part No.
3RH29112HA31

Mouser Part No
982-3RH29112HA31

Siemens

Contactor Accessories AUX. SWITCH 3NO+1NC FOR S00 SPRING

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Datasheet

377In Stock

£36.47

£33.35

£31.85

£30.76

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Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 120V SCREW

3RH21221AK60
Siemens
1: £85.41
33In Stock

Mfr. Part No.
3RH21221AK60

Mouser Part No
982-3RH21221AK60

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 120V SCREW

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Datasheet

33In Stock

£85.41

£76.09

£74.12

£70.15

£67.74

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 24V SCREW

3RH21221BB40
Siemens
1: £100.52
17In Stock

Mfr. Part No.
3RH21221BB40

Mouser Part No
982-3RH21221BB40

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 24V SCREW

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Datasheet

17In Stock

£100.52

£89.49

£85.60

£85.59

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SCREW

3RH21311BB40
Siemens
1: £97.51
26In Stock

Mfr. Part No.
3RH21311BB40

Mouser Part No
982-3RH21311BB40

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SCREW

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Datasheet

26In Stock

£97.51

£86.82

£82.92

£80.09

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SPRING

3RH21312BB40
Siemens
1: £108.58
22In Stock

Mfr. Part No.
3RH21312BB40

Mouser Part No
982-3RH21312BB40

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SPRING

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Datasheet

22In Stock

£108.58

£102.54

£96.51

£90.49

£84.45

Min.: 1
Mult.: 1

Contactor Accessories AUX. SWITCH 2NO+2NC FOR S00 & S0 SCREW

3RH29111HA22
Siemens
1: £37.14
44In Stock
22Expected 27/04/2026

Mfr. Part No.
3RH29111HA22

Mouser Part No
982-3RH29111HA22

Siemens

Contactor Accessories AUX. SWITCH 2NO+2NC FOR S00 & S0 SCREW

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Datasheet

44In Stock

22Expected 27/04/2026

£37.14

£32.83

£31.38

£31.37

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Min.: 1
Mult.: 1

Contactor Accessories AUX. SWITCH 2NO+2NC FOR S00 & S0 SCREW

3RH29111XA220MA0
Siemens
1: £35.69
65In Stock

Mfr. Part No.
3RH29111XA220MA0

Mouser Part No
982-3RH29111XA220MA0

Siemens

Contactor Accessories AUX. SWITCH 2NO+2NC FOR S00 & S0 SCREW

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Datasheet

65In Stock

£35.69

£31.85

£30.40

£29.42

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Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 24V SCREW

3RH21221AB00
Siemens
1: £94.25
8In Stock

Mfr. Part No.
3RH21221AB00

Mouser Part No
982-3RH21221AB00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 24V SCREW

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Datasheet

8In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 110V SCREW

3RH21221AF00
Siemens
1: £94.25
6In Stock

Mfr. Part No.
3RH21221AF00

Mouser Part No
982-3RH21221AF00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 110V SCREW

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Datasheet

6In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 230V SCREW

3RH21221AP00
Siemens
1: £85.40
6In Stock

Mfr. Part No.
3RH21221AP00

Mouser Part No
982-3RH21221AP00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 230V SCREW

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Datasheet

6In Stock

£85.40

£81.29

£77.63

£74.95

£72.37

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 240V SCREW

3RH21221AP60
Siemens
1: £94.25
5In Stock

Mfr. Part No.
3RH21221AP60

Mouser Part No
982-3RH21221AP60

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 240V SCREW

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Datasheet

5In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 110V SCREW

3RH21221BF40
Siemens
1: £108.58
6In Stock

Mfr. Part No.
3RH21221BF40

Mouser Part No
982-3RH21221BF40

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 110V SCREW

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Datasheet

6In Stock

£108.58

£102.54

£96.51

£90.49

£84.45

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 24V SPRING

3RH21222BB40
Siemens
1: £97.52
10In Stock

Mfr. Part No.
3RH21222BB40

Mouser Part No
982-3RH21222BB40

Siemens

Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 24V SPRING

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Datasheet

10In Stock

£97.52

£86.83

£82.90

£80.09

Min.: 1
Mult.: 1

Contactors - Electromechanical COUPLING RELAY 2NO+2NC DC 24V SPRING

3RH21222HB40
Siemens
1: £108.58
3In Stock

Mfr. Part No.
3RH21222HB40

Mouser Part No
982-3RH21222HB40

Siemens

Contactors - Electromechanical COUPLING RELAY 2NO+2NC DC 24V SPRING

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Datasheet

3In Stock

£108.58

£102.54

£96.51

£90.49

£84.45

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 24V SCREW

3RH21311AB00
Siemens
1: £94.25
4In Stock
2Expected 17/08/2026

Mfr. Part No.
3RH21311AB00

Mouser Part No
982-3RH21311AB00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 24V SCREW

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Datasheet

4In Stock

2Expected 17/08/2026

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SCREW

3RH21311AF00
Siemens
1: £85.41
4In Stock

Mfr. Part No.
3RH21311AF00

Mouser Part No
982-3RH21311AF00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SCREW

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Datasheet

4In Stock

£85.41

£76.09

£72.65

£70.15

£67.74

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SCREW

3RH21311AK60
Siemens
1: £94.25
8In Stock

Mfr. Part No.
3RH21311AK60

Mouser Part No
982-3RH21311AK60

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SCREW

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Datasheet

8In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 220V SCREW

3RH21311AN20
Siemens
1: £94.25
5In Stock

Mfr. Part No.
3RH21311AN20

Mouser Part No
982-3RH21311AN20

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 220V SCREW

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Datasheet

5In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 230V SCREW

3RH21311AP00
Siemens
1: £94.25
7In Stock

Mfr. Part No.
3RH21311AP00

Mouser Part No
982-3RH21311AP00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 230V SCREW

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Datasheet

7In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 240V SCREW

3RH21311AP60
Siemens
1: £94.25
4In Stock

Mfr. Part No.
3RH21311AP60

Mouser Part No
982-3RH21311AP60

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 240V SCREW

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Datasheet

4In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical COUPLING RELAY 3NO+1NC DC 24V SCREW

3RH21311JB40
Siemens
1: £119.95
2In Stock

Mfr. Part No.
3RH21311JB40

Mouser Part No
982-3RH21311JB40

Siemens

Contactors - Electromechanical COUPLING RELAY 3NO+1NC DC 24V SCREW

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Datasheet

2In Stock

£119.95

£111.99

£105.00

£98.47

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SPRING

3RH21312AF00
Siemens
1: £94.25
3In Stock

Mfr. Part No.
3RH21312AF00

Mouser Part No
982-3RH21312AF00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SPRING

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Datasheet

3In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SPRING

3RH21312JB40
Siemens
1: £119.95
1In Stock

Mfr. Part No.
3RH21312JB40

Mouser Part No
982-3RH21312JB40

Siemens

Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SPRING

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Datasheet

1In Stock

£119.95

£111.99

£105.00

£98.47

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 4NO AC 24V SCREW

3RH21401AB00
Siemens
1: £94.25
4In Stock

Mfr. Part No.
3RH21401AB00

Mouser Part No
982-3RH21401AB00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 4NO AC 24V SCREW

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Datasheet

4In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR RELAY 4NO AC 110V SCREW

3RH21401AF00
Siemens
1: £94.25
5In Stock

Mfr. Part No.
3RH21401AF00

Mouser Part No
982-3RH21401AF00

Siemens

Contactors - Electromechanical CONTACTOR RELAY 4NO AC 110V SCREW

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Datasheet

5In Stock

£94.25

£89.00

£83.77

£78.54

£73.30

Min.: 1
Mult.: 1

SIRIUS 3RH2 4- & 8-Pole Contactor Relays

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