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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Siemens Auxiliary Contacts AUX. SWITCH 3NO+1NC FOR S00 SPRING
Datasheet
380In Stock
$54.97
$53.86
$48.24
$42.56
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Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SPRING
Datasheet
17In Stock
$145.82
$131.45
$125.52
$120.58
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Min.: 1
Mult.: 1
Siemens Auxiliary Contacts AUX. SWITCH 1NO+1NC FOR S00 & S0 SCREW
Datasheet
113In Stock
$33.42
$28.43
$26.39
$24.73
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Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 4NO+4NC DC 24V SPRING
Datasheet
5In Stock
$184.04
$181.45
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTROL RELAY 7NO+1NC DC 24V SCREW
Datasheet
6In Stock
$215.69
$187.28
$178.80
$172.77
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Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 4NO AC 120V SCREW
Datasheet
8In Stock
$125.54
$115.12
$109.92
$104.67
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Min.: 1
Mult.: 1
Siemens Auxiliary Contacts SOLID-STATE COMP. AUX. SW.BL.. 2NO+2NC
Datasheet
10In Stock
$143.91
$142.16
$122.35
$109.57
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Min.: 1
Mult.: 1
Siemens Auxiliary Contacts AUX. SWITCH LATERAL 1NO+1NC S0 SCREW
Datasheet
22In Stock
$50.14
$49.10
$42.64
$38.14
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Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTROL RELAY 7NO+1NC AC 120V SCREW
Datasheet
5In Stock
$200.64
$174.07
$166.25
$160.55
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Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 120V SCREW
Datasheet
22In Stock
$125.51
$118.52
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 24V SCREW
Datasheet
14In Stock
$146.13
$131.46
$125.52
$121.20
Min.: 1
Mult.: 1
Siemens Auxiliary Contacts AUX. SWITCH 2NO+2NC FOR S00 & S0 SCREW
Datasheet
56In Stock
$54.10
$46.00
$42.89
$42.39
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Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 24V SCREW
Datasheet
6In Stock
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 110V SCREW
Datasheet
6In Stock
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 230V SCREW
Datasheet
3In Stock
3Expected 10/14/2026
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC AC 240V SCREW
Datasheet
3In Stock
2Expected 10/30/2026
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 110V SCREW
Datasheet
4In Stock
1Expected 10/28/2026
$146.13
$131.46
$125.52
$121.20
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 2NO+2NC DC 24V SPRING
Datasheet
3In Stock
3Expected 11/30/2026
$146.13
$131.46
$125.52
$121.20
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical COUPLING RELAY 2NO+2NC DC 24V SPRING
Datasheet
3In Stock
$146.43
$131.46
$125.52
$121.20
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 24V SCREW
Datasheet
2In Stock
8Expected 10/23/2026
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SCREW
Datasheet
3In Stock
3Expected 10/30/2026
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 110V SCREW
Datasheet
7In Stock
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 220V SCREW
Datasheet
5In Stock
$127.22
$125.35
$121.64
$118.85
View
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 230V SCREW
Datasheet
6In Stock
$127.41
$115.12
$109.92
$106.13
Min.: 1
Mult.: 1
Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 240V SCREW
Datasheet
4In Stock
$127.22
$125.35
$121.64
$118.85
View
Min.: 1
Mult.: 1