Product Details

40A 60A 80A 100A 120A Solid State Relay

Single phase Solid State Relay (SCR output)

Series GDH are power line relays allowing 40 to 120 Amps. switching power,with Voltage ratings from 280 to 480 Volts A.C. GDH series is Dual SCR Power Hybrid technology provides highly efficient thermal management for greatly increased cyclic life.

Features

High performance/low cost circuit design.
Logic compatible current regulated input.
2500 Vrms optical isolation.
Both “Zero Voltage” & phase controllable “Random Switching” versions.
High voltage (1200 Vpk) versions for 480 Vrms service.
LED-indication for control input.
Control voltage range:4~16 Vdc ,3 to 32 Vdc or 90~250Vac.

Greegoo's SSR model explanation

Symbol	Meaning
G	Greegoo
D	Single phase
H	SCR output
*	40-40A, 60-60A, 80-80A, 100-100A, 120-120A
*	28-280V,48-480V
*	Z-zero control, R-random control
*	D1-4-16Vdc, D3-4-32Vdc, A2-90-280Vac
For example:	GDH4048ZD3, single phase, SCR output, 40A，480Vac，4-32Vdc control

40A 60A 80A AC Switching Solid State Relays Model Selection

Control	Rated operational current			Load Voltage	Switching
voltage	40 Amp	60 Amp	80 Amp	AC	type
4 to 16 Vdc	GDH4028ZD1	GDH6028ZD1	GDH8028ZD1	280V	Zero-crossing
4 to 32 Vdc	GDH4028ZD3	GDH6028ZD3	GDH8028ZD3
90 to 280Vac	GDH4028ZA2	GDH6028ZA2	GDH8028ZA2
4 to 16 Vdc	GDH4028RD1	GDH6028RD1	GDH8028RD1		Random
3 to 32 Vdc	GDH4028RD3	GDH6028RD3	GDH8028RD3
90 to 280Vac	GDH4028RA2	GDH6028RA2	GDH8028RA2
4 to 16 Vdc	GDH4048ZD1	GDH6048ZD1	GDH8048ZD1	480V	Zero-crossing
3 to 32 Vdc	GDH4048ZD3	GDH6048ZD3	GDH8048ZD3
90 to 280Vac	GDH4048ZA2	GDH6048RA2	GDH8048RA2
4 to 16 Vdc	GDH4048RD1	GDH6048RD1	GDH8048RD1		Random
3 to 32 Vdc	GDH4048RD3	GDH6048RD3	GDH8048RD3
90 to 280Vac	GDH4048RA2	GDH6048RA2	GDH8048RA2

100A and 120A AC Switching Solid State Relays Model Selection

Control	Rated operating Current		Load Voltage	Switching
voltage	100 Amp	120 Amp	AC	type
4 to 16 Vdc	GDH10028ZD1	GDH12028ZD1	280V	Zero-crossing
4 to 32 Vdc	GDH10028ZD3	GDH12028ZD3
90 to 280Vac	GDH10028ZA2	GDH12028ZA2
4 to 16 Vdc	GDH10028RD1	GDH12028RD1		Random
3 to 32 Vdc	GDH10028RD3	GDH12028RD3
90 to 280Vac	GDH10028RA2	GDH12028RA2
4 to 16 Vdc	GDH10048ZD1	GDH12048ZD1	480V	Zero-crossing
3 to 32 Vdc	GDH10048ZD3	GDH12048ZD3
90 to 280Vac	GDH10048ZA2	GDH12048ZA2
4 to 16 Vdc	GDH10048RD1	GDH12048RD1		Random
3 to 32 Vdc	GDH10048RD3	GDH12048RD3
90 to 280Vac	GDH10048RA2	GDH12048RA2

The product video of solid state relay

FAQ

Q:What's the benefit of a solid state relay?

SSRs have no mechanical parts, reducing the risk of arcing, making them more durable and reliable in high-frequency switching applications. Solid state relays can significantly decrease both downtime and maintenance costs.

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:What are the difference between SCR module and Solid state relay?

The main differences between a Silicon Controlled Rectifier (SCR) module and a Solid State Relay (SSR) lie in their functions and composition. An SCR can regulate current by controlling the conduction angle, while an SSR primarily acts as a switch and cannot regulate current. A Solid State Relay consists of an SCR and a synchronous trigger drive, with an integrated isolation trigger terminal, whereas an SCR requires external isolation. Although they may have similar functions in some applications, they differ significantly in regulation capability and internal structure.

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40A to 120A Single phase solid state relays (PDF)

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