Solid State Relay SSR-25DD - Pack of 2

Key Features

• Package Contents: 2 x SSR-25DD Solid State Relays
• Control Method: DC to DC (DC Input, DC Output)
• Input Control Voltage: 3-32V DC
• Output Load Voltage: 5-200V DC
• Maximum Load Current: 25A
• Response Time: ≤10ms
• Dielectric Strength: >2.5KV
• Design: No moving parts for silent operation and extended lifespan. Features an isolated baseplate for efficient heat dissipation.

Replaces / Cross-Reference Part Numbers

• SSR-25DD

Compatibility & Fitment

• Suitable for switching high-current DC loads using a low-voltage DC control signal.
• Common applications include industrial automation, CNC machinery, DC motor control, DC heating elements, and robotics.
• Compatible with output signals from microcontrollers such as Arduino, Raspberry Pi, and other PLC systems.

When to Replace

• The relay fails to activate the load when a control signal is present.
• The load remains permanently on, even without a control signal.
• Switching becomes intermittent or unreliable.
• The relay overheats excessively during operation, indicating internal failure.
• Visible physical damage, such as cracks, burns, or melted housing.

Installation Tips

• Disconnect all power sources before installation or service.
• A heat sink is required for load currents exceeding 10A to ensure proper thermal management and prevent overheating.
• Apply a thin layer of thermal paste between the relay's metal base and the heat sink for optimal heat transfer.
• Ensure all wire connections are secure to prevent poor contact and potential arcing.
• Verify correct polarity for both the DC input (control) and DC output (load) terminals.