Solid State Relays

The main advantages of solid state relays over conventional electro-mechanical relays is that they have no moving parts to wear out, and therefore no contact bounce issues. SSRs are able to switch both “ON” and “OFF” much faster than a mechanical relays armature can move, as well as zero voltage turn-on and zero current turn-off eliminating electrical noise and transients.
Solid state relays are available in a range of package options, ranging from just a few volts or amperes to many hundreds of volts and amperes of output switching capability. A small input voltage, typically 3 to 32 volts DC, can be used to control a much large output voltage or current.

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Description Price Minimum Load Current Maximum Load Current Range Mounting Type Series Minimum Load Voltage Maximum Load Voltage Minimum Control Voltage Maximum Control Voltage Switching Type Contact Configuration Terminal Type Output Device Package Style
RS Stock No. 467-4778
Mfr. Part No.3RF2330-1AA02
BrandSiemens
TWD2,284.00
Each
units
0.5 A 30 A Sirius Classic DIN Rail - 24 V 230 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 467-4863
Mfr. Part No.3RF2320-1AA06
BrandSiemens
TWD3,711.00
Each
units
0.5 A 20 A Sirius Classic DIN Rail - 48 V 600 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 472-9250
Mfr. Part No.3RF2170-1AA04
BrandSiemens
TWD2,537.00
Each
units
0.5 A 70 A - Panel Mount - 230 V 460 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 612-9028
Mfr. Part No.3RF2420-1AC45
BrandSiemens
TWD8,617.00
Each
units
0.5 A 20 A - DIN Rail - 48 V 600 V 4 V dc 30 V dc Zero Crossing 3P-NO Screw Thyristor -
New
RS Stock No. 210-4410
Mfr. Part No.3RF2420-1AC55
BrandSiemens
TWD9,018.00
Each
units
500 mA 20 A SIRIUS Screw Fitting 3RF24 48 V 600 V - - AC - - Thyristor -
New
RS Stock No. 211-4920
Mfr. Part No.3RF2120-1BA04
BrandSiemens
TWD1,912.00
Each
units
20 A - SIRIUS - 3RF21 48 V 460 V - - Instantaneous SPNO - - -
New
RS Stock No. 210-4411
Mfr. Part No.3RF2430-1AB45
BrandSiemens
TWD7,655.00
Each
units
500 mA 30 A SIRIUS Screw Fitting 3RF24 48 V 600 V - - DC - - Thyristor -
New
RS Stock No. 211-4922
Mfr. Part No.3RF2120-2AA02
BrandSiemens
TWD1,755.00
Each
units
20 A - SIRIUS - 3RF21 24 V 230 V - - Zero Point SPNO - - -
New
RS Stock No. 216-4029
Mfr. Part No.3RF3410-2BB04
BrandSiemens
TWD6,876.00
Each
units
500 mA 9.2 A SIRIUS DIN Rail 3RF34 48 V 480 V - - DC - - Thyristor -
New
RS Stock No. 211-4923
Mfr. Part No.3RF2120-2AA04
BrandSiemens
TWD1,976.00
Each
units
20 A - SIRIUS - 3RF21 48 V 460 V - - Zero Point SPNO - - -
New
RS Stock No. 211-3665
Mfr. Part No.3RF2320-1DA02
BrandSiemens
TWD3,491.00
Each
units
0.5 A 20 A SIRIUS DIN Rail 3RF 24 V 230 V - - Short-circuit resistant with B-automatic device SPNO - Thyristor -
RS Stock No. 758-6911
Mfr. Part No.3RF2320-1AA22
BrandSiemens
TWD3,102.00
Each
units
2 mA 20 A Sirius Classic DIN Rail - 24 V ac 230 V ac 110 V ac 230 V ac Zero Crossing SPNO Screw - -
New
RS Stock No. 210-4397
Mfr. Part No.3RF2320-1DA04
BrandSiemens
TWD3,791.00
Each
units
500 mA 20 A SIRIUS Screw Fitting 3RF23 48 V 460 V - - DC SPNO - Thyristor -
New
RS Stock No. 213-0728
Mfr. Part No.3RF2310-1AA04-0KN0
BrandSiemens
TWD2,926.00
Each
units
101 mA 10 A SIRIUS Surface Mount 3RF23 48 V 460 V - - DC SPNO - Thyristor -
RS Stock No. 758-6914
Mfr. Part No.3RF2320-1AA24
BrandSiemens
TWD3,351.00
Each
units
500 mA 20 A Sirius Classic DIN Rail - 48 V ac 460 V ac 110 V ac 230 V ac Zero Crossing SPNO Screw - -
RS Stock No. 203-2135
Mfr. Part No.3RF2330-1AA45
BrandSiemens
TWD3,547.00
Each
units
5 A 30 A SIRIUS DIN Rail 3RF23 48 V 600 V - - Protective SPNO - Mosfet -
RS Stock No. 472-8960
Mfr. Part No.3RF2150-1AA02
BrandSiemens
TWD1,964.00
Each
units
0.5 A 50 A - Panel Mount - 24 V 230 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 518-7528
Mfr. Part No.3RF2310-1BA04
BrandSiemens
TWD2,878.00
Each
units
0.1 A 10.5 A Sirius Classic DIN Rail - 48 V ac 460 V ac 15 V dc 24 V dc Instantaneous SPNO Screw Thyristor -
RS Stock No. 612-9006
Mfr. Part No.3RF2255-1AC45
BrandSiemens
TWD8,296.00
Each
units
0.5 A 55 A - Panel Mount - 48 V 600 V 4 V dc 30 V dc Zero Crossing 3P-NO Screw Thyristor -
New
RS Stock No. 210-4396
Mfr. Part No.3RF2320-1CA44
BrandSiemens
TWD3,659.00
Each
units
500 mA 20 A SIRIUS Screw Fitting 3RF23 48 V 460 V - - DC SPNO - Thyristor -