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AC Solid State Relay - 280V 20A Random Turn-on

Product Code: 3962_0
Excl. VAT: £17.50 Incl. VAT: £21.00
  • Buy 5 for £16.57 (£19.88 incl. tax) each and save 6%
  • Buy 10 for £15.49 (£18.59 incl. tax) each and save 12%
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For AC switching applications, this solid state relay is economical and reliable.

Using the digital outputs from a Phidgets device such as the OUT1100 - 4x Digital Output Phidget, you can control the relay to silently switch an AC circuit at 280V/20A or less.

This relay has a random turn-on, which means it doesn't wait for the AC signal to cross zero before switching on.

If your SSR is overheating, you should consider getting a heat sink for safety. See the related products for compatible heatsinks. This SSR comes with a heat transfer pad that can be placed between the metal base of the SSR and the surface it's mounted to in order to help encourage heat flow. It also comes with a varistor that can be used to protect your SSR against voltage spikes in some applications.

Comes Packaged with


This SSR comes with a heat transfer pad and a protective cover. Use the heat transfer pad whenever mounting the SSR on a heat sink or metal surface. We recommend that you use the plastic cover if there is any risk of a person or conductive material accidentally touching the load side contacts. The other AC we relays we've sold in the past have come with an external varistor. This relay has additional protective circuitry inside, so an external varistor is not needed.

Product Specifications

Electrical Properties
Isolation Method Photoelectric
Dielectric Strength 4 kV AC
Control Voltage Min 4 V DC
Control Voltage Max 32 V DC
Load Voltage Max (AC) 280 V AC
Load Current Max (AC) 20 A
Load Surge Current 200 A
Relay Turn-on Type Random Turn-on
Turn-on Time Max  1 ms
Physical Properties
Length 58.6 mm
Width 45.7 mm
Height 26.5 mm
Operating Temperature Min -30 °C
Operating Temperature Max 80 °C
Other Properties
Manufacturer Part Number KS15D-24P20-Y

* - For an explanation of what this means, please visit this section of our SSR primer.

Have a look at the Data Sheet for a complete set of specifications.

Whenever possible, items which are in stock are dispatched the same day, or the next working day.

Large and/or heavy items are dispatched by UPS courier service and these orders must be placed before 15:00hrs (GMT) to ensure same day dispatch.

Small items are normally sent using a Royal Mail service for UK orders, and International Airmail or UPS for overseas orders

Returns Policy

AC Solid State Relay - 280V 20A Random Turn-on

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