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You are in:   Web Shop » Process Control, Enclosures & Relays » Solid State Relays (SSRs)

Solid State Relays (SSRs)

A range of solid state relays (SSRs) for switching AC loads of up 75 amps using a low DC voltage logic signal. SSRs allow for fast switching of loads and have a long life. Since they have no moving part, unlike traditional mechanical relays, they produce much less electrical interference and no audible noise. They can be controlled using temperature controller with an SSR output, see our range of Temperature & Process Controllers.
Eurotherm SVDA SSR (Solid State Relay)

Eurotherm SVDA SSR (Solid State Relay)

Product Code: PROSWITCH##

Quantity:


Model (Current Rating)
SVDA/3V25/A02 (25A)   ~  £20.00 ~ 1 - 2 days estimated availability
SVDA/3V50/A02 (50A)   ~  £25.00 ~ 1 - 2 days estimated availability
SVDA/3V75/A02 (75A)   ~  £40.00 ~ 1 - 2 days estimated availability


Eurotherm SVDA single-phase solid state relays, for loads up to 25A, 50A or 75A (depending on model) at 24-330Vac, controlled from a 4-32Vdc logic (on/off) input and feature zero voltage switching to prolong equipment's life and reduce harmonic interferance. They are designed to be mounted on metal panel walls or other heatsink in order to keep the temperature of the metal base below 40°C.

  • LED input indicator
  • Clear plastic safety cover
  • Superior Surge Survival™ technology
  • UL recognised, CSA certified

Turn On Logic Voltage: >4V dc - 32V dc (10mA dc max)
Turn Off Logic Voltage: <1V dc
Load Voltage Range: 24-330Vac

Low Cost Solid State Relay

Low Cost Solid State Relay

Product Code: PROSWITCH##LC

Quantity:


Model - Rating
10A   ~  £10.00 ~ 1 - 2 days estimated availability
25A   ~  £14.00 ~ 1 - 3 weeks estimated availability
40A   ~  £16.00 ~ 1 - 3 weeks estimated availability
75A   ~  £27.00 ~ 1 - 2 days estimated availability


Single-phase solid state relays, for loads up to 10A, 25A, 40A, 75A (depending on model) at 24-480Vac, controlled from a 3-32Vdc logic (on/off) input. They are designed to be mounted on metal panel walls or other heatsink in order to keep the temperature of the metal base below 40°C.

  • LED input indicator
  • Clear plastic safety cover

Control Logic Voltage: 3V dc - 32V dc
Load Voltage Range: 24-480Vac
Dimensions: 58 x 44 x 32mm


Low Cost Phase Angle Control SSR, 75A, 4-20mA

Low Cost Phase Angle Control SSR, 75A, 4-20mA

Product Code: PROSWITCHPA75LC


Price:   £48.00

Quantity:

Estimated Availability: 1 - 2 days


A single-phase solid state relay, with phase angle control for resistive loads up 75A, controlled from a 4 - 20mA (proportional) input. At 4mA the output is off, at 20mA it is fully on, in between it will be partially on (i.e. reduced power). They are designed to be mounted on metal panel walls or other heatsink in order to keep the temperature of the metal base below 40°C. It has an LED indicator.

Load Voltage: 90 - 250Vac
Control Signal: 4 - 20mA DC (Proportional)
Dimensions (LxWxH): 62 x 45 x 23.5mm
Ambient Temperature: -30°C - +75°C
Dielectric Strength: 2000Vac
Insulation Resistance: 500M Ohm/500VDC



Siemens 3RF21 SSR (Solid State Relay)

Siemens 3RF21 SSR (Solid State Relay)

Product Code: PROSWITCH#0

Quantity:


Model (Current, Load Voltage)
20A, 24-230Vac   ~  £18.00 ~ 1 - 2 days estimated availability
50A, 48-600Vac   ~  £22.00 ~ 1 - 2 days estimated availability


A single-phase solid state relay, for loads up to 20 or 50 amps, depending on model. They are designed to be mounted on metal panel walls or other heatsink in order to keep the temperature of the metal base below 40°C. The control signal terminals are detachable for easy wiring.

Rated Load Current: 20A or 50A (Depending on model)
Control Logic Voltage: 4Vdc - 30Vdc
Load Voltage Range: 24 - 230Vac or 48 - 600Vac (Depending on model), (-15% - +20%), 50/60Hz
Degree of Protection: IP20
Dimensions: 58 x 44 x 32mm


Omron 3 Phase SSR (Solid State Relay)

Omron 3 Phase SSR (Solid State Relay)

Product Code: PROSWITCH3##440

Quantity:


Model - Current Rating
25A   ~  £97.00 ~ 1 - 2 days estimated availability
35A   ~  £116.00 ~ 1 - 2 days estimated availability
45A   ~  £133.00 ~ 1 - 2 days estimated availability


An Omron 3 phase (3 pole) solid state relay with heat sink for panel mounting. For load up to 25A, 35A or 45A (depending on model) at 200-400Vac, controlled from a 12-24Vdc logic (on/off) input.

Control Logic Voltage: 12Vdc - 24Vdc
Load Voltage Range: 200 - 400Vac

DIN Rail Adaptor & Heat Sink for SSRs

DIN Rail Adaptor & Heat Sink for SSRs

Product Code: PROSWITCHDINRAILADP


Price:   £14.00

Quantity:

Estimated Availability: 1 - 2 days


An aluminium heat sink for mounting Eurotherm SVDA SSR (Solid State Relay) or Low Cost Solid State Relay, which clips onto a DIN rail or can be mounted to panel wall. The heat sink will help to dissipate heat from the SSR, keeping it cooler and prolonging its life-span. It comes with screw for earthing and two screws for mounting the relay.

Heat Sink Thermal Resistance: 3.5°C/W
Dimensions (WxHxD - when vertically mounted): 45x100x50mm

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