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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.
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.
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).
About CNC Electric
CNC Electric was founded in 1988 with the launch of our inaugural molded case circuit breakers — marking the beginning of our journey in power solutions. With a focus on product development and manufacturing, we reorganized into a corporate group by 1995 and introduced our first full low-voltage series, earning a reputation for rugged reliability.
Many of our products are CE, TUV, and RoHS certified, ensuring reliability and compliance. We focus on both efficient production and environmental responsibility, integrating sustainable practices into our processes.
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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.
