Power relay 40A (SSR-40DA)
KSh 1,400.00
Only 2 left in stock
The SSR-40DA is a high-current solid-state relay designed for reliable switching of AC loads using a low-voltage DC control signal. Unlike mechanical relays, it uses semiconductor switching technology, providing silent operation, fast response, and long service life with no contact wear. It is well suited for high-power control applications requiring electrical isolation and stable performance.
Key Features
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Solid-state relay with no mechanical contact.
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High current switching capability up to 40A
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Optical isolation between control and load sides
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Silent operation with fast switching speed
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High reliability and long operational life
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Integrated zero-cross switching to reduce electrical noise
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Suitable for resistive and inductive loads
Technical Specifications
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Control input type: DC
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Control input voltage: 3–32V DC
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Output load type: AC only
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Output voltage range: 24–380V AC
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Maximum load current: 40A
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Switching type: Zero-cross
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Isolation voltage: ≥2500VAC
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On-state voltage drop: approx. 1.6V
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Leakage current (off-state): ≤2mA
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Operating temperature: –30°C to +80°C
Electrical Characteristics
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Requires proper heat sinking at high current operation
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Low control current suitable for microcontroller GPIO via driver
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High surge current handling capability
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Provides electrical isolation between control and power circuits
Compatibility
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Arduino, ESP32, ESP8266 (via DC control signal)
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PLC control outputs
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Industrial control systems
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