Low-Voltage Controls and Distribution

Relays and Monitoring

Siemens relays and monitoring covering control relays, monitoring relays, overload protection, timers and interface devices.

Included series and legacy categories: 3TH4 Contactor Relays, 8- and 10-pole, 3RH1 Contactor Relays, 4- and 8-pole, 3RH2 Auxiliary Contactors, 4- and 8-pole, 3TH2/3TX* Contactor relays, coupling relays, 3RF20-24, 3RF32, 3RF34 Solid-state relays, 3RU11 SIRIUS therm delayed overl. rel, 3RP15/20, 3RT1916-2/1926-2 Time relays, 3RU21 Sirius nG therm delayed overl. Relais, 3RB1, 3RB20, 3RB21 SIRIUS electronic overload rel, 3UG Monitoring Relays, Solid-state relays, 3RS10/11/14/15/19/2 Temperature Monitoring Relays, Interface module, 3RB30, 3RB31 Sirius nG elect overload rel standard, 3TX7 SIRIUS coupling relays, narrow design, 3RQ3 SIRIUS coupling relays, narrow design, LZS coupling relays with plug-in relays, 3RS17 Interface Converters, 3RN Thermistor motor protection,access, Relays, 3RF29, 3RF39 Solid-state relays, LZX Plug In Relays, 3UL22 Fault safeguard and access., 3RR2 Sirius nG View, 3RS70 SIRIUS signal converters, and related families.

This category brings current and legacy Siemens product families together so users can compare components for new projects, maintenance, retrofit and replacement requirements.

Model & Order Number

Models and MLFB Order Numbers

Order No. (MLFB)	Model / Type	Description	Status
3RF2410-1AB55	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 10A 40 DEG. C 48-600V / 230V AC 2-PHASE CONTROLLED SCREW TERMINAL BLOCKING VOLTAGE 1200V	In stock
3RF2410-1AC35	3RF20-24, 3RF32, 3RF34 Solid-state relays	SOLID-STATE CONTACT.3PHASE 3RF2 AC51 10A 40 DEG. C 48-600V / 110V AC 3-PHASE CONTROLLED SCREW TERMINAL BLOCKING VOLTAGE 1200V	In stock
3RF2410-1AC55	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 10A 40 DEG. C 48-600V / 230V AC 3-PHASE CONTROLLED SCREW TERMINAL BLOCKING VOLTAGE 1200V	In stock
3RF2410-2AB55	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 10A 40 DEG. C 48-600V / 230V AC 2-PHASE CONTROLLED SPRING-LOADED CONNECTION BLOCKING VOLTAGE 1200V	In stock
3RF2420-1AC55	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 20A 40 DEG. C 48-600V / 230V AC 3-PHASE CONTROLLED SCREW TERMINAL BLOCKING VOLTAGE 1200V	In stock
3RF2420-2AB45	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 20A 40 DEG. C 48-600V / 4-30V DC 2-PHASE CONTROLLED SPRING-LOADED CONNECTION BLOCKING VOLTAGE 1200V	In stock
3RF2420-2AB55	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 20A 40 DEG. C 48-600V / 230V AC 2-PHASE CONTROLLED SPRING-LOADED CONNECTION BLOCKING VOLTAGE 1200V	In stock
3RF2430-1AC55	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 30A 40 DEG. C 48-600V / 230V AC 3-PHASE CONTROLLED SCREW TERMINAL BLOCKING VOLTAGE 1200V	In stock
3RF2450-1AB45	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 50A 40 DEG. C 48-600V / 4-30V DC 2-PHASE CONTROLLED SCREW TERMINAL BLOCKING VOLTAGE 1200V	In stock
3RF2450-1AB55	3RF20-24, 3RF32, 3RF34 Solid-state relays	SEMI-CONDUCTOR CONTAC.3-PH.3RF2 AC51 50A 40 DEG. C 48-600V / 230V AC 2-PHASE CONTROLLED SCREW TERMINAL BLOCKING VOLTAGE 1200V	In stock