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.

Types of Contactors & Relays
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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS
Siemens Auxiliary Contacts AUX. SWITCH 1NO+2NC FOR S00 & S0 SCREW
Datasheet
10In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 1NO+3NC FOR S00 SCREW
Datasheet
3In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 2NO FOR S0 SCREW
Datasheet
8In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 3NO+1NC FOR S00 SCREW
Datasheet
21In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 1NO+1NC WIRE TOP SCREW
Datasheet
5In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUXILIARY SWITCH 1NO+1NC
Datasheet
8In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts SOLID-STATE COMP. AUX. SW.BL.. 2NO+2NC
Datasheet
10In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 2NC FOR S00 & S0 SCREW
Datasheet
5In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 1NO+1NC FOR S00 & S0 SCREW
Datasheet
6In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts ACC CONTACTOR
Datasheet
5In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 4NO FOR S00 & S0 SPRNG
Datasheet
7In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 4NC FOR S00 SPRING
Datasheet
5In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 2NO+2NC FOR S00 SPRING
Datasheet
6In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 3NO+1NC FOR S00 SPRING
Datasheet
5In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts CONTACTOR_AUX_AC
Datasheet
7In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 1NO+2NC FOR S00 & S0 SPRNG
Datasheet
5In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 2NO FOR S0 SPRING
Datasheet
6In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 2NO+2NC FOR S00 & S0 SPRNG
Datasheet
4In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH 2NO+2NC FOR S00 & S0 SPRNG
Datasheet
16In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH LATERAL 2NC S0 SCREW
Datasheet
8In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH LATERAL 1NO+1NC S0 SCREW
Datasheet
25In Stock
Min.: 1
Mult.: 1

Siemens Auxiliary Contacts AUX. SWITCH LATERAL 2NO S0 SCREW
Datasheet
5In Stock
Min.: 1
Mult.: 1

Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC AC 24V SCREW
Datasheet
10On Order
Min.: 1
Mult.: 1

Siemens Contactors - Electromechanical CONTROL RELAY 4NO+4NC DC 125V RING LUG
Datasheet
3Expected 8/10/2026
Min.: 1
Mult.: 1

Siemens Contactors - Electromechanical CONTACTOR RELAY 3NO+1NC DC 125V SCREW
Datasheet
Lead-Time 5 Weeks
Min.: 1
Mult.: 1