2-pack SSR-40DA Solid State Relay

2-pack SSR-40DA Solid State Relay

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$16.38
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$16.38
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2-pack SSR-40DA Solid State Relay

Key Features

  • Package Contents: 2 solid state relays
  • Model: SSR-40DA
  • Control Method: DC to AC
  • Input Voltage: 3-32V DC
  • Load Voltage: 24-380V AC
  • Load Current: 40A
  • Switching Mechanism: Electronic, no mechanical parts
  • Trigger Type: Zero-cross
  • Connections: 4 screw terminals for input and output

Replaces / Cross-Reference Part Numbers

  • SSR-40DA

Compatibility & Fitment

  • General-purpose component for controlling high-current AC loads with a low-voltage DC signal.
  • Suitable for automatic control systems, including temperature controllers, HVAC systems, and industrial machinery.

When to Replace

  • Relay fails to activate when input voltage is applied.
  • Relay remains stuck in the "ON" position, even with no input voltage.
  • Intermittent or unreliable switching of the AC load.
  • Visible signs of damage, overheating, or melting on the relay housing.

Installation Tips

  • Disconnect all power to the system before installation.
  • A heat sink is recommended for loads approaching the 40A rating to ensure proper heat dissipation.
  • Ensure all screw terminals are securely fastened to prevent arcing.
  • Verify that the wire gauge used is appropriate for the electrical load.
  • Confirm input and output connections are correct before applying power.
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  • Perfect fit

    Perfect fit

    Diverse applications in controlling computer peripherals, AC motors, lighting systems, spanning automation setups to enhance security and performance
  • Premium quality

    Premium quality

    This product adopts a heat-dissipating metal back plate and a copper terminal lug for superior conductivity.
  • Saving solution

    Saving solution

    Enjoy the great feeling when your engine is repaired and works properly like before - BlueStars brings DIY solutions to help you deal with any trouble
  • Simple installation

    Simple installation

    Solid State Relay is a simple part & just takes few minutes to install and will save you at least a hundred bucks in labor.
BRINGING RELIABILITY TO THE SWITCH

BRINGING RELIABILITY TO THE SWITCH

Brand Model Number
Model SSR-40DA
Control method DC to AC
Control (Input) Voltage 3-32VDC
Load (Output) Voltage 24-380VAC
Min Control Current 3MA
Max Control Current 35MA
Current & Frequency 40A