Product details

DC Solid State Relay built in Freewheeling Diode (GDZ06)

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.

Specification

Part Numbers	GDZ06
Control Voltage	12～15VDC / 18～36VDC
Control Current	30～80mA / 25～70mA
Undervoltage Lock	12V＜10VDC Lock / 18V＜16VDC Lock
Operating Indicator	LED
Maximum Voltage	100VDC / 200VDC / 600VDC / 1200VDC
Maximum Current	60, 80, 120, 150, 180, 200A
On-State Voltage Drop	≤1.0～4.5V
Off-State Voltage	100V / 200V / 600V / 1200V
Transient Voltage Protection	80V / 180V / 480V / 1000V
Overcurrent Protection	Blank: No / L: Output Current 50% / Z: Output Current 100%
Switching Time	≤0.08mS
Switching Characteristics	MOS or IGBT - Solid State Contactless Switching
Isolation Voltage	≥1800～2500V
Insulation Voltage	≥2000～2500V
Operating Temperature	－30～75℃
Cooling Conditions	With heat sink plus fan forced cooling
Load Current Safety Factor	Resistive load: 2.5-4 times; Inductive load: 3-6 times
Dimensions	95×60×46mm

Part Numbers	GDZ06C
Control Power Supply	12～15VDC 2W; 18～36VDC 2W
Control Voltage and Current	4-32VDC 8-25mA
Undervoltage Lock	12V＜10VDC Lock / 18V＜16VDC Lock
Operating Indicator	LED
Maximum Voltage	100VDC / 200VDC / 600VDC / 1200VDC
Maximum Current	60, 80, 120, 150, 180, 200A
On-State Voltage Drop	≤1.0～4.5V
Off-State Voltage	100V / 200V / 600V / 1200V
Transient Voltage Protection	80V / 180V / 480V / 1000V
Overcurrent Protection	Blank: No / L: Output Current 50% / Z: Output Current 100%
Switching Time	≤0.05mS
Switching Characteristics	MOS or IGBT - Solid State Contactless Switching
Isolation Voltage	≥1800～2500V
Insulation Voltage	≥2000～2500V
Operating Temperature	－30～75℃
Cooling Conditions	With heat sink plus fan forced cooling
Load Current Safety Factor	Resistive load: 2.5-4 times; Inductive load: 3-6 times
Dimensions	95×60×46mm

Temperature rating

Temperature rating of ssr

Note

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.

FAQ

Q:What is a Freewheeling Diode?

A freewheeling diode, also known as a flyback diode, is connected in parallel with an inductive load (e.g., motor, inductor, or transformer) in electronic circuits to provide a path for the current when the switching device (e.g., transistor, IGBT, or thyristor) turns off. This prevents voltage spikes caused by the inductive load’s stored energy, protecting the circuit and reducing electromagnetic interference (EMI).

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