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SIRIUS 3RF4 Solid-State Switching Devices

Siemens SIRIUS 3RF4 Solid-State Switching Devices provide wear-free and noiseless switching of motors. The series is designed for frequently switching on/off AC drives up to 7.5kW and for reversing up to 3.0kW. These Siemens solid-state switching devices are fully insulated and can be mounted directly onto motor starter protectors, overload relays, and SIRIUS current monitoring relays. 3RF4 three-phase solid-state contactors are equipped with a two-phase control suitable for typical motor circuits without a connection to the neutral conductor. Siemens SIRIUS 3RF4 switching devices with a width of 45mm cover motors up to 2.2kW, and those with a width of 90mm cover motors up to 3kW.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Load Current Rating	Load Voltage Rating	Control Voltage Range	Minimum Operating Temperature	Maximum Operating Temperature	Length	Width	Height	Series
Contactors - Solid State SS CONT,50A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24501AB45 Siemens 1: $597.00 2In Stock	Mfr. Part No. 3RF24501AB45 Mouser Part No 982-3RF24501AB45	Siemens	Contactors - Solid State SS CONT,50A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	2In Stock	$597.00 $530.05	Min.: 1 Mult.: 1	Chassis Mount	50 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	119.5 mm	130 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24101AC45 Siemens 1: $473.90 5In Stock	Mfr. Part No. 3RF24101AC45 Mouser Part No 982-3RF24101AC45	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	5In Stock	$473.90 $415.96 $410.07	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,30A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24301AC45 Siemens 1: $555.48 3In Stock	Mfr. Part No. 3RF24301AC45 Mouser Part No 982-3RF24301AC45	Siemens	Contactors - Solid State SS CONT,30A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	3In Stock	$555.48 $529.32	Min.: 1 Mult.: 1	Chassis Mount	30 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	89.5 mm	128 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24201AB45 Siemens 1: $417.52 3In Stock	Mfr. Part No. 3RF24201AB45 Mouser Part No 982-3RF24201AB45	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	3In Stock	$417.52 $377.56 $372.15	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	45 mm	117 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24201AC45 Siemens 1: $514.48 2In Stock 1Expected 2026/10/23	Mfr. Part No. 3RF24201AC45 Mouser Part No 982-3RF24201AC45	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	2In Stock 1Expected 2026/10/23	$514.48 $458.64	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	74.5 mm	119.5 mm	100 mm	3RF4
Contactors - Solid State SS CONT,40A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24401AC45 Siemens 1: $629.47 1In Stock 2Expected 2026/10/26	Mfr. Part No. 3RF24401AC45 Mouser Part No 982-3RF24401AC45	Siemens	Contactors - Solid State SS CONT,40A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	1In Stock 2Expected 2026/10/26	$629.47 $572.45	Min.: 1 Mult.: 1	Chassis Mount	40 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	119.5 mm	130 mm	95 mm	3RF4
Contactors - Solid State SS CONT,50A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24501AC45 Siemens 1: $750.59 2In Stock 1Expected 2026/10/23	Mfr. Part No. 3RF24501AC45 Mouser Part No 982-3RF24501AC45	Siemens	Contactors - Solid State SS CONT,50A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	2In Stock 1Expected 2026/10/23	$750.59 $648.31	Min.: 1 Mult.: 1	Chassis Mount	50 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	119.5 mm	130 mm	150 mm	3RF4
Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 3RF24101AB35 Siemens 1: $379.87 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24101AB35 Mouser Part No 982-3RF24101AB35	Siemens	Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$379.87 $362.25 $357.06	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	90 VAC to 125 VAC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SCREW 3RF24101AB45 Siemens 1: $356.06 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. 3RF24101AB45 Mouser Part No 982-3RF24101AB45	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 4 Weeks	$356.06 $339.67 $334.83	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SCREW 3RF24101AB55 Siemens 1: $379.87 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24101AB55 Mouser Part No 982-3RF24101AB55	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$379.87 $362.25 $357.06	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	230 VAC to 480 VAC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 3RF24101AC35 Siemens 1: $452.70 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24101AC35 Mouser Part No 982-3RF24101AC35	Siemens	Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$452.70 $436.11	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	90 VAC to 125 VAC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SCREW 3RF24101AC55 Siemens 1: $452.70 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24101AC55 Mouser Part No 982-3RF24101AC55	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$452.70 $436.11	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	180 VAC to 230 VAC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SPRING 3RF24102AB45 Siemens 1: $367.60 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. 3RF24102AB45 Mouser Part No 982-3RF24102AB45	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 4 Weeks	$367.60 $350.57 $345.54	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SPRING 3RF24102AB55 Siemens 1: $394.58 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24102AB55 Mouser Part No 982-3RF24102AB55	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$394.58 $379.89 $374.51	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	180 VAC to 230 VAC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SPRING 3RF24102AC45 Siemens 1: $447.03 Non-Stocked Lead-Time 3 Weeks	Mfr. Part No. 3RF24102AC45 Mouser Part No 982-3RF24102AC45	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,4-30VDC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 3 Weeks	$447.03 $430.66	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SPRING 3RF24102AC55 Siemens 1: $476.99 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24102AC55 Mouser Part No 982-3RF24102AC55	Siemens	Contactors - Solid State SS CONT,10A,48-600V,3P,230VAC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$476.99 $459.54	Min.: 1 Mult.: 1	Chassis Mount	10.5 A	48 VAC to 600 VAC	180 VAC to 230 VAC	- 25 C	+ 60 C	45 mm	96.5 mm	95 mm	3RF4
Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 3RF24201AB35 Siemens 1: $418.26 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24201AB35 Mouser Part No 982-3RF24201AB35	Siemens	Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$418.26 $402.70 $396.98	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	90 VAC to 125 VAC	- 25 C	+ 60 C	45 mm	117 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SCREW 3RF24201AB55 Siemens 1: $418.26 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24201AB55 Mouser Part No 982-3RF24201AB55	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$418.26 $402.70 $396.98	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	180 VAC to 230 VAC	- 25 C	+ 60 C	45 mm	117 mm	100 mm	3RF4
Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 3RF24201AC35 Siemens 1: $496.44 Non-Stocked Lead-Time 3 Weeks	Mfr. Part No. 3RF24201AC35 Mouser Part No 982-3RF24201AC35	Siemens	Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 3 Weeks	$496.44 $478.26	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	90 VAC to 125 VAC	- 25 C	+ 60 C	74.5 mm	119.5 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SCREW 3RF24201AC55 Siemens 1: $496.44 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24201AC55 Mouser Part No 982-3RF24201AC55	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SCREW Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$496.44 $478.26	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	180 VAC to 230 VAC	- 25 C	+ 60 C	74.5 mm	119.5 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SPRING 3RF24202AB45 Siemens 1: $406.00 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24202AB45 Mouser Part No 982-3RF24202AB45	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$406.00 $390.91 $385.36	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	45 mm	117 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SPRING 3RF24202AB55 Siemens 1: $429.69 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24202AB55 Mouser Part No 982-3RF24202AB55	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$429.69 $413.71 $407.84	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	180 VAC to 230 VAC	- 25 C	+ 60 C	45 mm	117 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SPRING 3RF24202AC45 Siemens 1: $497.24 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24202AC45 Mouser Part No 982-3RF24202AC45	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,4-30VDC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$497.24 $479.04	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	4 VDC to 30 VDC	- 25 C	+ 60 C	74.5 mm	119.5 mm	100 mm	3RF4
Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SPRING 3RF24202AC55 Siemens 1: $523.51 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24202AC55 Mouser Part No 982-3RF24202AC55	Siemens	Contactors - Solid State SS CONT,20A,48-600V,3P,230VAC,ZP,SPRING Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$523.51 $504.32	Min.: 1 Mult.: 1	Chassis Mount	22 A	48 VAC to 600 VAC	180 VAC to 230 VAC	- 25 C	+ 60 C	74.5 mm	119.5 mm	100 mm	3RF4
Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 3RF24301AB35 Siemens 1: $447.03 Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. 3RF24301AB35 Mouser Part No 982-3RF24301AB35	Siemens	Contactors - Solid State SOLID-STATE CONTACTOR 3-PHASE 3RF2 Learn More about Siemens 3rf4 solid state switching devices	Datasheet	Non-Stocked Lead-Time 2 Weeks	$447.03 $430.66	Min.: 1 Mult.: 1	Chassis Mount	30 A	48 VAC to 600 VAC	90 VAC to 125 VAC	- 25 C	+ 60 C	74.5 mm	119.5 mm	100 mm	3RF4

SIRIUS 3RF4 Solid-State Switching Devices

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