SSR-40 DD 40A Heavy-Duty DC-to-DC Solid State Relay FOTEK
Industrial heavy-duty SSR-40 DD single-phase DC-to-DC Solid State Relay engineered for high-current contactless switching of direct current loads. Operated by a low-voltage 3–32V DC control input, it smoothly and safely switches high-capacity DC operating loads from 5V to 200V DC at up to 40 Amps continuous load current. Built with optical isolation between the control logic and high-power DC load terminals, ultra-fast response times, and a solid-state structure with no mechanical moving parts, it delivers spark-free, silent operation and long operational life under demanding industrial automation, solar array, and battery management loads.
Parameter | Specification |
|---|---|
Product Type | High-Current Single-Phase DC-to-DC Solid State Relay (SSR) |
Model | SSR-40 DD |
Control Voltage (Input) | 3V to 32V DC |
Control Current | 3 mA to 25 mA DC |
Load Voltage (Output) | 5V to 200V DC |
Rated Load Current | 40 Amps |
Switching Element | High-Power MOSFET / Transistor Output |
On-State Voltage Drop | ≤ 1.5V DC |
Off-State Leakage Current | ≤ 1 mA |
Turn-On / Turn-Off Time | ≤ 1 ms (High-Speed Switching) |
Dielectric Strength | ≥ 2500V AC (Input to Output / Base) |
Insulation Resistance | 500 MΩ at 500V DC |
Operating Temperature | -20°C to +80°C |
Cooling Requirement | External Heat Sink mandatory (For loads > 10A; forced air cooling recommended above 20A) |
Indication | Red LED Control Input Status Indicator |
Mounting Type | Panel / Heat Sink Mount |
Compliance Standards | CE, RoHS Compliant |
Ssaoco Dammam
- Started from: Jul 10, 2025
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