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Solid State Relay SSR-50DA 3-32VDC 50A/250V Output 24-380VAC w/ Cover (3-32V relay solid state)
Input Voltage (Trigger)
DC 3-32V 
Output Voltage(Line)AC 24-380V
Output Current(Line)50 A
On Voltage≤1V
On-Off Time≤10ms
Off Leakage Current≤2mA
Transparent Lid Included Yes

Package Includes:
1 X 50A SSR-50DA Solid State Relay With Cover

Datasheet available at
Depending on how hard your relay works, you might want to add a heat sink to it.

Q:During continuity testing with my multimeter why does my relay on the AC side not switch on?
A: The below info was found at

A multimeter determines impedance by injecting a small amount of voltage through it's probes into the circuit being tested. It then measures the current flowing through the probes and calculates resistance. Easy enough; Resistance = Voltage / Current! However, as we just discussed above, a solid state relay’s output turns on by “stealing” a bit of voltage from the AC mains in order to supply current to the gate of the SCRs. Simply put, if the AC mains is not connected to the relay then the output cannot turn on. Since the voltage and current produced by a multimeter is not sufficient enough to turn on the SCRs, the output of a solid state relay will remain in the off state; even with the input signal applied. As a result, SSRs will sometimes fail an incoming inspection because the engineer expects to see a significant change in the output impedance when they turn on the relay.The most effective way to bench test a solid state relay is to construct a simple test circuit consisting of a DC power supply or battery (a 9Vdc battery will work fine in most cases ) and a 60W or 100W light bulb.

R99.90  Inc VAT
Aluminum Alloy HeatSink For Solid State Relay SSR Heat Dissipation (SSR relay heatsink)

Brand new and high quality.
New heat sink for solid state relay SSR
Aluminium alloy
Come with a aluminum heat sink provides long lasting usage, it will help dissipate the heat and protect your relay.
Solid State Relay ideal for automatic process control application, a must component for temperature controller and other machinery control system.


Materail: Aluminium alloy.
Size:Roof:50mm x 60mm.Foot:80mm x 50mm.
Compatible with:Designed specially for single phase solid state relay.
Color :Silver

Package includes:

1 x Solid state relay heat sink

R89.90  Inc VAT
Monkmakes SSR (Monkmakes SSR)

The MonkMakes SSR is a low voltage solid state relay (no moving parts). This makes it super-easy to control loads of up to 2A at 16V from an Arduino, Raspberry Pi or other 3 or 5V microcontroller or single board computer.

This modern take on the electro-mechanical relay can even be used for low frequency PWM to control the power to its load.


This relay can be used to switch low voltage devices such as light bulbs, a motor, a small heating element or even a string of 12V LED lighting. The voltage needs to be kept under 16V, but the relay will automatically protect itself against too much current.

• Solid-sate relay up to 2 Amp Peak 1A continuous AC/DC
• Active LED indicator
• Resettable ‘polyfuse’ to protect against over-current
• Great for Arduino and Raspberry Pi
• Suitable for low frequency PWM

What's in the box ?

1 x Monkmakes SSR board



(* ONLY SSR -Solid State Relay - Included - all other products are for reference use only*)
R179.90  Inc VAT
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