SSR-50DA-H FOTEK Solid State Relay
FOTEK SSR-50DA-H – 50A High-Voltage Solid State Relay
The FOTEK SSR-50DA-H is a single-phase DC-to-AC solid state relay designed for switching AC loads using a low-voltage DC control signal. With a rated load current of 50A and an output voltage range of 90–480VAC, it is suitable for industrial temperature control, electric heating systems, and automated machinery.
The relay uses zero-cross switching technology to reduce electrical interference during switching. Its solid-state design provides silent operation and eliminates the mechanical contacts found in conventional electromechanical relays.
| Location | Available |
|---|---|
| Ssaoco Jeddah | 2 |
Parameter | Specification |
|---|---|
Manufacturer | FOTEK |
Modelnumber | SSR-50DA-H |
Producttype | SolidStateRelay(SSR) |
Phase | Singlephase |
Ratedloadcurrent | 50Amaximum |
Inputvoltage | 4–32VDC |
Outputvoltage | 90–480VAC |
Switchingmethod | Zero-crossswitching |
Maximumleakagecurrent | 5mA |
Turn-offvoltage | Lessthan3.5VDC |
Triggercurrent | 12mAmaximum |
Responsetime | 8.3msat60Hz |
Isolationstrength | 4kVRMS |
Insulationresistance | 100MΩat500VDC |
Operatingtemperature | −40°Cto+80°C(seriesspecification) |
Housingmaterial | Flame-retardantABS,UL94V-0 |
Mounting | Surfacemounting |

Ssaoco Jeddah
- Started from: Jul 10, 2025


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