SSR-25 DA 25A – Single Phase DC to AC Solid State Relay

Technical Specifications and Applications of the SSR-25 DA Model

The SSR-25DA solid state relay is a reliable electronic switching device designed to control AC loads up to 25 A and 24-380 V with a low-voltage DC control signal (3-32 V). Unlike mechanical relays, this SSR has no moving parts, offering long service life, silent switching, and minimal electrical noise.

This model typically includes an LED status indicator and employs a zero-cross trigger method, which switches the relay at the AC waveform’s zero crossing, reducing electrical interference and stress on connected loads.

Key Technical Specifications:

• Model: SSR-25DA

• Control Voltage: 3–32 V DC – input signal range;

• Load Voltage: 24–380 V AC, up to 25 A;

• Trigger Method: Zero-cross switching for smoother operations;

• Indicator: LED status display;

• Type: Single-phase DC-to-AC solid state relay;

Benefits of Solid State Relay:
✔ No mechanical contacts – silent and wear-free switching;
✔ Reduced electromagnetic interference;
✔ Suitable for automation, heating control, lighting and motor loads;
✔ Can be driven from logic-level controllers (e.g., Arduino, Raspberry Pi).