3 Phase Automatic Transfer Switch

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3 Phase Automatic Transfer Switch

The 3 Phase Automatic Transfer Switch (ATS) is a critical power management device designed for AC 50/60Hz electrical systems, ensuring seamless power continuity for critical loads. It enables automatic switching between two independent power sources (e.g., main grid and backup generator) when detecting anomalies such as overvoltage, undervoltage, or phase loss in the primary supply, minimizing downtime and protecting sensitive equipment.

YCQ9 ATS

16A–630A | 2P/3P/4P | Type A /Type B

YCQ9Ms ATS

10A–800A | 3P/4P | Standard type | IEC 60947-6-1

YCQ9B-63 ATS

6A–63A | 2P/3P/4P | IEC 60947-6-1

YCQ1F ATS

16A–630A | 2P/3P/4P | LCD Display | IEC 60947-6-1

Why Choose

CNC 3 Phase Automatic Transfer Switch

The YCQ9Ms dual power automatic transfer switch is designed for AC 50/60Hz power supply systems with rated working voltage AC400V and rated working current up to 800A. It enables automatic switching between two power sources, ensuring uninterrupted operation of critical loads. When one power supply experiences overvoltage, undervoltage, or phase loss, it automatically transfers to the backup source or starts the generator.

Key Features:

Built-in RS485 communication interface with MODBUS-RTU protocol, supporting real-time data upload, remote configuration, status monitoring, and "four remote" functions (remote control, telemetry, signaling, and adjustment).
Applicable to hospitals, shopping malls, banks, hotels, high-rises, and fire protection facilities requiring uninterrupted power.

Core Specs:

Compliant with IEC 60947-6-1 standard.
Rated current range: 10A-800A (classified by shell frame: 63/125/250/400/630/800A).
Poles: 3P/4P.
Use category: AC33iB.
Rated insulation voltage: AC690V (AC800V for 800A model).
Rated short-circuit breaking capacity (Icn): 15kA-35kA (varies by model).

Durability:

Mechanical life: 2500-5000 cycles (varies by model).
Electrical life: 500-1000 cycles (varies by model).

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FAQ for 3 Phase Automatic Transfer Switch (ATS)

Q: Which is better, ATS or STS?
ATS (Automatic Transfer Switch) and STS (Static Transfer Switch) serve different needs. ATS uses mechanical switching, ideal for cost-effective, long-duration power transfers (e.g., grid-to-generator). STS relies on solid-state components for ultra-fast (microsecond) switching, suited for critical, sensitive equipment like data centers. Choose based on load type, switching speed, and budget.

Q: What happens if ATS fails?
A failed ATS triggers safety protocols: it maintains the current power source (if stable) and sends alerts (via indicators/remote systems) for urgent maintenance. Regular checks (per "3 phase automatic transfer switch maintenance guide") prevent critical failures.

Q: What is the purpose of an automatic transfer switch?
ATS ensures uninterrupted power for critical loads. It detects issues (undervoltage, overvoltage, phase loss) in the primary supply and switches to backup (e.g., generator), protecting hospitals, malls, and "3 phase automatic transfer switch for generator" setups from downtime.

Q: Why are automatic transfer switches so expensive?
ATS cost reflects precision engineering—compliance with IEC 60947-6-1, durable mechanics (2500-5000 mechanical cycles), and features like voltage monitoring/RS485 communication. Smaller models (e.g., "100 amp 3 phase automatic transfer switch") are more budget-friendly.

Q: 3 Phase Automatic Transfer Switch price
Pricing varies by capacity (e.g., "400 amp" vs. "800 amp"), features (communication modules), and certifications. Get tailored quotes based on your load (current/voltage) and requirements.