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Fotek SSR-40DA Solid State Relay


This is SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A. A solid state relay (SSR) allows you to control high-current AC loads from lower voltage DC control circuitry. Solid state relays have several advantages over mechanical relays. CityTech BD 

One such advantage is that they can be switched by a much lower voltage and at a much lower current than most mechanical relays. Also, because there are no moving contacts, solid state relays can be switched much faster and for much longer periods without wearing out. CityTech BD 

This particular SSR can switch current loads of up to 40A with a 3-32V DC input and a zero cross trigger control method. Each one of these relays is equipped with four screw terminals (for use with ring or fork connectors) and a plastic cover that slides over the top of the relay to protect the terminals.

Features :

  1. Long service life and high reliability
  2. Reduced electromagnetic interference
  3. Highly reliable, compact size designed to offer users maximum simplicity. CityTech BD 

Advantages :

  1. High Dielectric strength over 4KV 
  2. High Isolation strength over 100MΩ/500VDC 
  3. With over heat protection Circuit (120°C) 
  4. High surge current sustenance 
  5. High surge voltage sustenance 
  6. Conformity with EN60947-4-3 and EN60950 CityTech BD 
General Specification
Dielectric StrengthOver 2.5kVA / 1 min
Trigger Voltage (VDC)3-32
Switching Voltage (VAC)24-380@40A
Operating Temperature Range (°C)-20 to 85
Length (mm)45.5
Width (mm)62.5
Height (mm)24
Weight (gm)95
Shipment Weight0.1 kg
Shipment Dimensions7 × 6 × 3 cm


  1. Datasheet

Package includes :

1 x SSR-40DA Solid State Relay Module


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