Three-phase solid state relays (SSR) in 3DA and 3AA configurations — for precise, silent, and long-life three-phase AC switching in industrial heating, temperature control, and automation applications.
3DA (DC-AC) and 3AA (AC-AC) models feature optical isolation and CE certification. Current range 10A to 200A, load voltage 24–480V AC. Factory-direct supply, OEM and wholesale available.
Key Features
- Two configurations — 3DA (DC-AC) / 3AA (AC-AC)
- Optical isolation — 2500V rms
- Silent switching — no mechanical contacts, long service life
- CE certified
- Current range — 10A to 200A
- Load voltage — 24–480V AC
- Factory-direct supply — OEM and wholesale available
Applications
Suitable for industrial heating systems, electric furnaces, temperature control equipment, and industrial automation equipment.
| Parameter | 3DA | 3AA |
|---|---|---|
| Control Type | DC-AC | AC-AC |
| Control Input | 3–32V DC | 70–280V AC |
| Load Voltage | 24–480V AC | 24–480V AC |
| Current Range | 10A–200A | 10A–200A |
| Peak Voltage | 800V–1200V AC | 800V–1200V AC |
| Isolation Voltage | 2500V rms | 2500V rms |
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