SSR-40DA Solid State Relay 40A

Features:

• 40A Load Switching: Designed to switch compatible AC loads with a nominal current rating of 40A, subject to proper cooling and the manufacturer's specifications.

• Wide DC Control Input: Accepts a 4–32V DC control signal for integration with compatible electronic controllers and automation systems.

• AC Load Output: Common SSR-40DA models support AC output loads in the 24–380V AC range.

• Solid-State Operation: Uses semiconductor switching components instead of mechanical contacts, reducing contact wear and eliminating mechanical clicking.

• Quiet Switching: Operates silently, making it suitable for temperature-control equipment and other automated applications.

• Fast Electronic Response: Enables rapid switching of compatible AC loads according to the relay's switching characteristics.

• Controller Compatibility: Can be controlled by compatible PID temperature controllers, PLCs, and DC logic circuits.

• Electrical Isolation: The control input is typically isolated from the load circuit; verify the isolation specifications for the exact relay.

• Panel-Mount Design: Commonly features a compact housing with screw terminals for installation in electrical control panels.

• Heat-Sink Compatibility: Can be mounted on a suitable heat sink to help dissipate heat during high-current operation.

Specifications:

• Model: SSR-40DA

• Product Type: Solid State Relay (SSR)

• Rated Load Current: 40A nominal

• Control Input Voltage: 4–32V DC

• Load Output Voltage: Typically 24–380V AC

• Input Type: DC control

• Output Type: AC load switching

• Switching Technology: Semiconductor-based

• Output Switching Mode: Common versions use zero-cross switching; confirm the specific model

• Mounting Type: Panel mount

• Connection Type: Screw terminals

• Cooling: External heat sink recommended or required at elevated load currents

• Mechanical Contacts: None

• Typical Load Types: Compatible AC resistive loads and other loads permitted by the manufacturer's specifications

• Package Contents: 1 × SSR-40DA solid state relay

Note: SSR-40DA is a widely used model designation, but specifications and build quality vary between manufacturers. Confirm the output-voltage range, zero-cross behavior, isolation rating, leakage current, and thermal derating from the supplied product datasheet.

Applications:

• PID temperature-control systems

• Electric heating elements

• Industrial heating equipment

• PLC-based automation

• AC load control panels

• Packaging and processing machinery

• Laboratory temperature-control equipment

• Automated production systems

• Compatible AC lighting applications

• Electronics and electrical control projects