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. 467-4762
Mfr. Part No.3RF2320-1AA02
BrandSiemens
HK$541.68
Each
units
0.5 A 20 A Sirius Classic DIN Rail - 24 V 230 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 467-4807
Mfr. Part No.3RF2320-1AA04
BrandSiemens
HK$812.17
Each
units
0.5 A 20 A Sirius Classic DIN Rail - 48 V 460 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 612-9012
Mfr. Part No.3RF2410-1AC45
BrandSiemens
HK$2,048.05
Each
units
0.1 A 10.5 A - DIN Rail - 48 V 600 V 4 V dc 30 V dc Zero Crossing 3P-NO Screw Thyristor -
RS Stock No. 472-9266
Mfr. Part No.3RF2150-1AA04
BrandSiemens
HK$615.57
Each
units
0.5 A 50 A - Panel Mount - 230 V 460 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 472-9036
Mfr. Part No.3RF2120-1AA04
BrandSiemens
HK$512.44
Each
units
0.1 A 20 A - Panel Mount - 230 V 460 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 472-9042
Mfr. Part No.3RF2120-1AA02
BrandSiemens
HK$451.20
Each
units
0.1 A 20 A - Panel Mount - 24 V 230 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
New
RS Stock No. 211-4919
Mfr. Part No.3RF2120-1AA45
BrandSiemens
HK$531.57
Each
units
20 A - SIRIUS - 3RF21 48 V 600 V - - Zero Point SPNO - - -
New
RS Stock No. 210-4399
Mfr. Part No.3RF2320-2AA02
BrandSiemens
HK$776.71
Each
units
500 mA 20 A SIRIUS Screw Fitting 3RF23 24 V 230 V - - DC SPNO - Thyristor -
RS Stock No. 467-4740
Mfr. Part No.3RF2310-1AA02
BrandSiemens
HK$706.74
Each
units
0.1 A 10.5 A Sirius Classic DIN Rail - 24 V 230 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
New
RS Stock No. 210-4392
Mfr. Part No.3RF2310-1AA44
BrandSiemens
HK$745.44
Each
units
100 mA 10.5 A SIRIUS Screw Fitting 3RF23 48 V 460 V - - DC SPNO - Thyristor -
RS Stock No. 203-2164
Mfr. Part No.3RF2350-3AA04
BrandSiemens
HK$1,152.43
Each
units
5 A 50 A SIRIUS DIN Rail 3RF23 48 V 460 V - - Protective SPNO - Mosfet -
New
RS Stock No. 210-4396
Mfr. Part No.3RF2320-1CA44
BrandSiemens
HK$947.90
Each
units
500 mA 20 A SIRIUS Screw Fitting 3RF23 48 V 460 V - - DC SPNO - Thyristor -
RS Stock No. 203-2085
Mfr. Part No.3RF2420-1AB45
BrandSiemens
HK$1,848.04
Each
units
15 A 20 A SIRIUS DIN Rail 3RF24 48 V 600 V - - Protective SPNO - Mosfet -
RS Stock No. 203-2118
Mfr. Part No.3RF2330-3AA44
BrandSiemens
HK$868.99
Each
units
500 mA 30 A SIRIUS DIN Rail 3RF23 48 V 600 V - - Zero-Point Switching - - - -
New
RS Stock No. 211-3665
Mfr. Part No.3RF2320-1DA02
BrandSiemens
HK$904.29
Each
units
0.5 A 20 A SIRIUS DIN Rail 3RF 24 V 230 V - - Short-circuit resistant with B-automatic device SPNO - Thyristor -
New
RS Stock No. 213-0730
Mfr. Part No.3RF2320-1AA02-0KN0
BrandSiemens
HK$801.42
Each
units
500 mA 20 A SIRIUS Screw Fitting 3RF23 24 V 230 V - - DC SPNO - Thyristor -
RS Stock No. 472-9121
Mfr. Part No.3RF2050-1AA04
BrandSiemens
HK$614.50
Each
units
0.5 A 50 A - Panel Mount - 230 V 460 V 15 V dc 24 V dc Zero Crossing SPNO Screw Thyristor -
RS Stock No. 203-2082
Mfr. Part No.3RF2350-3AA06
BrandSiemens
HK$1,443.13
Each
units
500 mA 50 A SIRIUS DIN Rail 3RF23 48 V 600 V - - Zero-Point Switching - - - -
New
RS Stock No. 211-4927
Mfr. Part No.3RF2170-1CA04
BrandSiemens
HK$802.55
Each
units
70 A - SIRIUS - 3RF21 48 V 460 V - - Zero Point SPNO - - -
RS Stock No. 758-6918
Mfr. Part No.3RF3403-1BD04
BrandSiemens
HK$2,356.77
Each
units
2 mA 3.8 A Sirius Innovation DIN Rail - 48 V ac 480 V ac 15 V dc 30 V dc Instantaneous 3P-2NO Screw - -