Product Details

Integrated IP20 touch-safe removable covers Solid State Relays

GM Series panel mount single phase AC output Solid State Relays are designed to be used in almost any application, offering very long life expectancy and are easy to install, easy to use, robust and multipurpose.

››Output current of 10, 25, 50, 75, 100 and 125 Amps

››Output voltage of 24-280 Vac and 48-660 Vac

››Control voltage of 4-32 Vdc, 18-36 Vac/dc, 40-265 Vac and 90-260 Vac

››Zero cross or instantaneous (resistive or inductive loads)

››Integrated IP20 touch-safe removable covers

››Built-in overvoltage protection (only Zero Cross)

››LED input status indicator

Standard type

Model No.	Output Current	Output Voltage	Input Voltage	Switching	Output protection
GM10DZL	10A	24-280 VAC	4-32 VDC	Zero Cross	TVS
GM10AZL	10A	24-280 VAC	40-265 VAC
GM25DZL	25A	24-280 VAC	4-32 VDC
GM25CZL	25A		18-36V AC/DC
GM25AZL	25A		40-265 VAC
GM25DZH	25A	48-660 VAC	4-32 VDC
GM25AZH	25A	48-660 VAC	40-265 VAC
GM50DZH	50A	48-660 VAC	4-32 VDC
GM50CZH	50A		18-36V AC/DC
GM50AZH	50A		40-265 VAC
GM75DZH	75A	48-660 VAC	4-32 VDC
GM75AZH	75A	48-660 VAC	40-265 VAC
GM100DZH	100A	48-660 VAC	4-32 VDC
GM100AZH	100A	48-660 VAC	40-265 VAC
GM125DZH	125A	48-660 VAC	4-32 VDC
GM125AZH	125A	48-660 VAC	40-265 VAC
GM25DRL	25A	24-280 VAC	4-32 VDC	Random	RC Snubber
GM25ARL	25A	24-280 VAC	90-260 VAC
GM50DRH	50A	48-660 VAC	4-32 VDC
GM50ARH	50A	48-660 VAC	90-260 VAC
GM75DRH	75A	48-660 VAC	4-32 VDC

FAQ

Q:How to confirm the current and voltage of the solid state relay against inductive load and resistive load?

A margin should be left when selecting the voltage and current of the solid state relay. For resistive load: the current is selected according to 2.5~4 times the load current, and the voltage is selected according to 2~2.5 times the load power. Inductive load: current is selected according to 3-7 times load current, voltage is selected according to 2.5-3 times load voltage.

Q:SCR output SSR and Triacs output SSR, what's their difference?

TRIAC Output SSR: Simple, cost-effective, and suitable for low to medium power AC load switching applications, particularly in consumer or light industrial settings. Limitations include lower performance and durability under high current/voltage and inability to regulate current.

SCR Output SSR: Uses dual SCRs, designed for high-power, high-voltage, and heavy-load applications with better thermal management, higher reliability, and longer lifespan. Supports both zero-crossing and random switching modes, and can regulate current, making it ideal for industrial applications but at a higher cost.

Q:Selection Guide for Solid State Relays

A margin should be left when selecting the voltage and current of the solid state relay.

For resistive load: the current is selected according to 2.5~4 times the load current, and the voltage is selected according to 2~2.5 times the load power. Inductive load: current is selected according to 3-7 times load current, voltage is selected according to 2.5-3 times load voltage.

According to the relationship between load current and ambient temperature, when the ambient temperature is high or heat dissipation conditions are not good, the current capacity of the solid state relay should be increased accordingly.
In order to prevent the product from short-circuiting during use, it is necessary to connect a fast circuit breaker or a fast fuse in series with the product in the load circuit.

For inductive loads, a freewheeling diode must be connected to both ends of the load, and a varistor must be connected to the output end (the varistor (MOV) is selected according to 1~1.5 times of the power supply voltage) to prevent the high voltage generated during switching from damaging the solid-state switch.

When the product is installed, it is required that the contact surface between the heatsink and the product must be flat and clean, and a layer of thermally conductive silicone grease is applied to its surface, and then finally the screws set with flat washers and Spring washersare tightened symmetrically to fix.