DC Solid State Relay built in Freewheeling Diode

• Electromagnetic photoelectric isolation between input and output circuits.
• Control signal compatible with PLC, TTL, PWM logic interfaces.
• LED indicates operating status.
• Solid-state, contactless output with fast switching speed, no sparks, and no arc phenomenon.
• Load side includes a freewheeling diode for protection and overcurrent protection, making it more suitable for inductive loads.
• Encapsulated in epoxy resin, corrosion-resistant, shock-resistant, ensuring stable and reliable switch operation.
• The product is mainly used for power control equipment of high-power DC inductive loads, such as DC generators, motors, solenoid valves, electromagnets, and other DC inductive loads.

• Since a freewheeling diode is already installed inside the product, it can operate safely without overvoltage protection for inductive loads under the specified battery supply voltage. However, for a rectified power supply, it is best to connect a varistor across the power supply terminals.
• The normal sequence of operation is to connect the load power first and then apply the control signal voltage; otherwise, it may damage the internal chip.