63A Three-Phase Automatic Transfer Switch (ATS) – Seamless power continuity for critical systems
When the power grid fails, every millisecond counts. For servers, production lines, or photovoltaic inverters, even a brief power gap can lead to system resets, data loss, or costly operational downtime. Our 63A Three-Phase Automatic Transfer Switch (ATS) ensures a smooth transition between power sources in less than 50 milliseconds—a speed so fast that your equipment won’t even notice the change.
Note: This device is designed for 3×230V/400V, 50–60Hz three-phase installations. Installation must be carried out exclusively by a qualified electrician in accordance with local electrical safety regulations and standards.
Why choose this model? (Key Advantages):
- Ultra-fast <50ms switching — Critical equipment remains powered without resets, data loss, or production line interruptions.
- 63A Nominal Current — Robust enough for demanding industrial and commercial applications, including central HVAC and heavy machinery.
- Three-Phase Solar Compatible — Automatically switches between solar energy, the public grid, or a backup generator to maximise energy self-sufficiency.
- Auto & Manual Modes — Reliable 24/7 autonomous operation in AUTO mode, with direct manual control for testing and scheduled maintenance.
- Wide Voltage Tolerance (85%–110%) — Stable switching even in grids with frequent fluctuations, preventing nuisance tripping.
- DIN Rail Mounting — Easily integrates into any standard electrical distribution board in minutes without requiring infrastructure changes.
- Automatic Return — Continuous monitoring ensures the system automatically switches back to the primary source as soon as it stabilises.
Performance and Reliability
The three-phase ATS continuously monitors the electrical parameters of your primary source. At the first sign of a fault—such as a voltage drop, phase failure, or threshold breach—it triggers the backup source in under 50ms. It is so responsive that even sensitive UPS systems often won’t need to engage.
In automatic mode, the entire process—detection, switching, and restoration—is fully autonomous. In manual mode, the operator can select the active source directly, which is ideal for periodic testing or planned maintenance. The physical selector switch removes any ambiguity during emergency situations.
With a 63A capacity at 400V three-phase and dual 50/60Hz compatibility, this ATS is the ideal solution for three-phase solar arrays, diesel generators, small data centres, and industrial climate control systems. Its rugged construction ensures reliable performance even in environments with high thermal loads.
| Parameter | Specification |
|---|---|
| Device Type | Three-Phase Automatic Transfer Switch (ATS) |
| Nominal Current | 63A |
| Nominal Voltage | 3×230V / 400V (Three-phase) |
| Frequency | 50 Hz / 60 Hz |
| Switching Time | < 50 ms |
| Number of Sources | 2 (Source A – Primary, Source B – Backup) |
| Operating Modes | Automatic / Manual |
| Voltage Operating Range | 85% – 110% of nominal voltage |
| Primary Applications | Three-phase solar, diesel generators, grid power, data centres |
| Mounting | DIN Rail, electrical distribution board |
| Usage Standard | Industrial / Commercial |
Installation and Usage Guide
- DIN Rail Installation — Secure the ATS into your distribution board following the provided wiring diagram; connect Source A (grid/solar) and Source B (generator/backup).
- Mode Selection — Set the selector to AUTO for autonomous operation or MAN for manual control.
- Voltage Threshold Check — Ensure your system parameters align with the device’s 85%–110% operating range.
- Functional Test — Simulate a primary source failure to verify that the ATS switches to Source B in under 50ms and reverts automatically once Source A is restored.
- Maintenance — Always switch to MANUAL mode and isolate the power supply before performing any physical work on the connections.
Package Contents
- 1× 63A Three-Phase Automatic Transfer Switch (ATS)
Frequently Asked Questions
Does it work with a grid-tied three-phase solar system?
Yes. The ATS automatically switches between solar power and the public grid when solar production drops below the required threshold, requiring no manual intervention.
How fast is the switching between sources?
Under 50 milliseconds. This is fast enough to prevent resets in IT equipment, industrial HVAC systems, and automated production lines.
Is professional installation required?
Yes. Any work on three-phase electrical systems must be performed by a qualified electrician in accordance with local safety regulations. Unauthorised installation may void the warranty and poses significant safety risks.
Can it be installed outdoors or in damp environments?
Not directly. The ATS must be housed within an enclosed electrical distribution board. If the board is located outdoors, it must have a minimum IP65 rating to protect the device from moisture and dust.
What happens if both sources fail simultaneously?
The ATS will enter a standby state and will not supply power to the load. Once either source returns, the ATS will automatically switch according to the configured priority.
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