Unison 905 3PH ZDA 48 25 01 Three Phase Solid State Relay
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Product Highlights
- Three Phase Solid State Relay for Industrial Applications
- 25A Load Current Rating per Phase
- 48V DC Control Voltage for Easy Integration
- Zero Cross Switching for Noise-Free Operation
- No Moving Parts - Long Life & Maintenance Free
- LED Indicator for Visual Status Monitoring
- Compact Design with DIN Rail Mounting Option
- Built-in Snubber Circuit for Protection
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Technical Specifications
| Model Number | 905 3PH ZDA 48 25 01 |
|---|---|
| Brand | Unison |
| Product Type | Three Phase Solid State Relay (SSR) |
| Load Current Rating | 25A per Phase |
| Control Voltage | 48V DC |
| Control Voltage Range | 38V - 58V DC |
| Load Voltage | 24 - 480V AC |
| Switching Type | Zero Cross Switching (ZDA) |
| Number of Phases | 3 Phase |
| Control Current | 15 - 25mA (typical) |
| Turn-On Time | ≤ 10ms (1/2 cycle) |
| Turn-Off Time | ≤ 10ms (1/2 cycle) |
| Operating Temperature | -30°C to +80°C (with heat sink) |
| Isolation Voltage | 2500V AC (Input to Output) |
| LED Indicator | Yes (Red LED for ON Status) |
| Protection | Built-in RC Snubber Circuit |
| Mounting | Screw Mount / DIN Rail (optional) |
| Terminal Type | Screw Terminals |
| Applications | Heater Control, Motor Control, Temperature Control, Industrial Automation, PLC Output |
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Seller Information
Surevic Solutions Pvt Ltd
4.7 Seller Rating
Authorized distributor of industrial automation components across India
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The Unison 905 3PH ZDA 48 25 01 is a high-performance three-phase solid state relay designed for industrial control applications requiring reliable switching of three-phase AC loads. With a 25A current rating per phase and 48V DC control voltage, this SSR provides an efficient alternative to traditional electromagnetic contactors and mechanical relays.
Featuring zero cross switching (ZDA) technology, this relay switches loads at the zero crossing point of the AC waveform, minimizing electrical noise and extending the life of connected equipment. The absence of moving parts ensures silent operation, no contact wear, and virtually unlimited switching cycles, making it ideal for applications with frequent on/off cycles.
The built-in LED indicator provides instant visual feedback of the relay status, while the integrated snubber circuit protects against voltage spikes and inductive loads. Compatible with PLCs, temperature controllers, and automation systems, this SSR is perfect for heater control, motor control, lighting control, and various industrial automation applications. The compact design with screw terminals ensures easy installation and reliable connections.