60-150A Solid State Relays SSR
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60-150A Solid State Relays SSR
Single phase Solid State Relay (SCR output)
Series GDH are power line relays allowing 60 to 150 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 ,4 to 32 Vdc or 90~280Vac.
Symbol | Meaning |
G | Greegoo |
D | Single phase |
H | SCR output |
* | 60-60A, 80-80A, 100-100A, 120-120A,150-150A |
* | 28-280V,48-480V |
* | Z-zero control, R-random control |
* | D1-4-16Vdc, D3-4-32Vdc, A2-90-280Vac |
For example: | GDH8048ZD3, single phase, SCR output, 80A,480Vac,4-32Vdc control |
Voltage | Control volt | Rated operational current | ||
60 Amp | 80 Amp | 100 Amp | ||
280 VAC | 4 to 16 Vdc | GDH6028ZD1B | GDH8028ZD1B | GDH10028ZD1B |
"Zero Voltage" | 4 to 32 Vdc | GDH6028ZD3B | GDH8028ZD3B | GDH10028ZD3B |
280 VAC | 4 to 16 Vdc | GDH6028RD1B | GDH8028RD1B | GDH10028RD1B |
"Random Switching" | 4 to 32 Vdc | GDH6028RD3B | GDH8028RD3B | GDH10028RD3B |
480 VAC | 4 to 16 Vdc | GDH6048ZD1B | GDH8048ZD1B | GDH10048ZD1B |
"Zero Voltage" | 4 to 32 Vdc | GDH6048ZD3B | GDH8048ZD3B | GDH10048ZD3B |
480 VAC | 4 to 16 Vdc | GDH6048RD1B | GDH8048RD1B | GDH10048RD1B |
"Random Switching" | 4 to 32 Vdc | GDH6048RD3B | GDH8048RD3B | GDH10048RD3B |
100 Amp | 120 Amp | 150 Amp | ||
280 VAC | 4 to 16 Vdc | GDH10028ZD1B | GDH12028ZD1B | GDH15028ZD1B |
"Zero Voltage" | 4 to 32 Vdc | GDH10028ZD3B | GDH12028ZD3B | GDH15028ZD3B |
280 VAC | 4 to 16 Vdc | GDH10028RD1B | GDH12028RD1B | GDH15028RD1B |
"Random Switching" | 4 to 32 Vdc | GDH10028RD3B | GDH12028RD3B | GDH15028RD3B |
480 VAC | 4 to 16 Vdc | GDH10048ZD1B | GDH12048ZD1B | GDH15048ZD1B |
"Zero Voltage" | 4 to 32 Vdc | GDH10048ZD3B | GDH12048ZD3B | GDH15048ZD3B |
480 VAC | 4 to 16 Vdc | GDH10048RD1B | GDH12048RD1B | GDH15048RD1B |
"Random Switching" | 4 to 32 Vdc | GDH10048RD3B | GDH12048RD3B | GDH15048RD3B |
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.
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.
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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