SSR-40VA Solid State Relay, Variable Resistor Input, 24–380VAC Output, 40A

The Fotek SSR-40VA is a single-phase solid-state relay designed for applications requiring analog control of AC loads. Utilizing a variable resistor input, it allows for precise modulation of output power, making it ideal for resistive heating elements, lighting systems, and motor speed controls. Its zero-crossing detection ensures smooth switching, while robust isolation and overheat protection enhance safety and reliability in demanding industrial environments.​

Key Features:

• Variable Resistor Control: Accepts analog input via potentiometer or external variable resistor for smooth AC load regulation.​
• High Load Switching: Supports up to 40A at 380VAC, suitable for industrial heating and motor control applications.​
• Zero-Crossing Functionality: Minimizes electrical noise and extends the lifespan of connected equipment.​
• Robust Electrical Isolation: Offers dielectric strength over 4kV and insulation resistance exceeding 100MΩ at 500VDC.​
• Overheat Protection: Built-in thermal protection circuit activates at 120°C to prevent damage from overheating.​
• Compact Panel Mount Design: Features screw terminals for easy installation in control panels.​

Additional Specifications:

• Type: Solid State Relay
• Number of Channels: 1
• Coil Voltage: Variable
• Switching Voltage (VDC)/Current: N/A
• Switching Voltage (VAC)/Current: 24-380Vac At 40A