SSR-40 VA 40A Voltage Regulator Solid State Relay FOTEK
Industrial heavy-duty SSR-40 VA single-phase Solid State Voltage Regulator (SSVR) engineered for high-capacity proportional AC power tuning and variable load regulation. Driven by an external 470KΩ to 560KΩ (2W) potentiometer, it delivers smooth, stepless phase-angle adjustment for AC output loads ranging from 24V to 380V AC at up to 40 Amps continuous current. Designed for demanding applications such as high-power industrial electric furnaces, heating arrays, commercial lighting arrays, and AC fan speed controls. Built with optical isolation between control and load terminals, flame-retardant housing, and a solid-state architecture with no moving parts for spark-free, silent, and long-term reliable operation.
Parameter | Specification |
|---|---|
Product Type | High-Capacity Single-Phase Solid State Voltage Regulator (SSVR) |
Model | SSR-40 VA |
Control Signal (Input) | 470KΩ - 560KΩ / 2W External Potentiometer |
Load Voltage (Output) | 24V to 380V AC (50/60 Hz) |
Rated Load Current | 40 Amps |
Control Method | Phase-Angle Proportional Regulation |
On-State Voltage Drop | ≤ 1.5V AC |
Off-State Leakage Current | ≤ 5 mA |
Dielectric Strength | ≥ 2500V AC (Input to Output / Base) |
Insulation Resistance | 500 MΩ at 500V DC |
Operating Temperature | -20°C to +75°C |
Cooling Requirement | External Heat Sink mandatory (For loads > 10A; forced air cooling recommended above 20A) |
Mounting Type | Panel / Heat Sink Mount |
Compliance Standards | CE, RoHS Compliant |

Ssaoco Dammam
- Started from: Jul 10, 2025



Add your review