HYT1 3 Phase Automatic Transfer Switch – 32A to 3200A

HYT1 Automatic Transfer Switch (3 Phase) – Integrated, PC Class, 32 to 3200 Amps

The HYT1 series 3 phase automatic transfer switch introduces a comprehensive all-in-one solution for backup power management. Designed for AC 400V low voltage distribution, it integrates a circuit breaker, motorized transfer mechanism, and logic controller into a compact unit. Spanning 32A to 3200A across five frame sizes, this PC class ATS accommodates a range of needs—from a 100 amp 3 phase automatic transfer switch for branch circuits to a 400 amp or 800 amp 3 phase automatic transfer switch for main incomers, all within one reliable product platform.

Three control modes—auto, manual, and cabinet-door push-button remote—offer operational flexibility. The AC-33iB use category ensures reliable performance for frequent switching of mixed loads. On the 3200A frame, 50kA/60ms Icw supports selective coordination with downstream breakers. For panel builders sourcing a 3 phase automatic transfer switch for generator backup or dual-grid applications, HUYU Electric provides OEM/ODM options with full documentation.

Model Range & Performance – Five Frames, 32A to 3200A

All HYT1 models are rated AC-33iB for frequent switching of mixed loads. The 1600A and 3200A frames provide short-time withstand current (32kA and 50kA Icw respectively), facilitating improved selectivity downstream. These features make the HYT1 ideal for projects ranging from compact 100A units to facility-scale 800A 3 phase automatic transfer switches.

Integrated Design – Breaker, Transfer Mechanism & Controller in One

Conventional setups for a 3 phase automatic transfer switch involve three separate components: a circuit breaker, a transfer switch, and a controller, all mounted and wired independently. The HYT1 simplifies installation by combining these components into a single IP30-rated unit. The integrated circuit breaker ensures overcurrent protection on the source side, while the motorized transfer mechanism performs physical source switching. Furthermore, the built-in logic controller continuously monitors both sources, reducing panel space requirements, eliminating wiring errors, and facilitating quicker system commissioning.

The controller is available in two variants: Economy (integrated logic controller) or Smart (integrated and split-mount). With advanced monitoring capabilities for voltage loss, undervoltage (threshold 165V ±10%), and phase failure, this solution includes a standard three-position switch (I – O – II) with cabinet-door push-button remote control for complete operational convenience.

Technical Specifications

OEM/ODM Supply – 3 Phase ATS from 32A to 3200A

Buyer’s Guide

Selecting the Right 3 Phase Automatic Transfer Switch

Key considerations for choosing the HYT1 ATS for generator backup and critical power applications.

1. Integrated vs. Component-Based Design

A conventional 3 phase automatic transfer switch setup involves three separate components: circuit breaker, changeover switch, and controller, each requiring its own wiring and space. The HYT1 integrates all three into one unified unit, reducing installation complexity, minimizing errors, and freeing up enclosure space, resulting in faster throughput and lower installed costs for panel builders.

2. Matching Frame Size to Load

Small commercial settings benefit from the HYT1-100 (32A-100A) or HYT1-250 (125A-250A), offering quick transfer times of up to 300ms. For larger commercial main incomers, the HYT1-630 supports 400 amp and 600 amp 3 phase needs. Facility-level applications utilize the HYT1-1600 (800A) or HYT1-3200, which facilitates loads up to 3200A and delivers 50kA Icw, enabling selectivity akin to high-end air circuit breaker systems.

3. Controller Selection

The Economy model addresses essential monitoring and transfer functions, while the Smart model adds split-mount options, allowing convenient access via the cabinet door, enhancing safety and usability.

4. Short-Circuit Verification

Ensure installation site fault current ratings are below the HYT1’s Icw capacity (32kA–50kA) for safe and reliable operation.

Frequently Asked Questions

What are the common problems with ATS panels?

Frequent issues with ATS panels include wiring errors between separate components, contact welding under short circuits, and nuisance transfers from incorrect voltage thresholds. The HYT1 addresses these through its integrated design — breaker, mechanism, and controller are pre-wired and tested as one unit, eliminating interconnection faults. The PC class rating certifies short-circuit withstand without welding. The adjustable undervoltage threshold (165V ±10%) prevents unnecessary transfers during transient grid disturbances.

How much does GenerLink cost?

GenerLink is a meter-collar transfer switch solution with pricing that varies by utility approval and installation requirements. As an alternative to meter-collar devices, the HYT1 provides an integrated 3 phase automatic transfer switch installed within the building’s distribution panel. This approach typically offers lower total installed cost for project-scale deployments, especially in the 200 amp to 800 amp 3 phase range, where integrating breaker protection and transfer switching into one device eliminates the need for separate components. For a project-specific quotation, contact HUYU Electric with your current ratings and quantity requirements.

What’s the difference between ATS and STS?

An ATS (Automatic Transfer Switch) uses electromechanical contacts to transfer loads between power sources, with typical transfer times measured in hundreds of milliseconds — the HYT1 achieves 300ms to 1.1s depending on frame size. An STS (Static Transfer Switch) uses semiconductor devices to complete the transfer within a quarter-cycle (under 5ms), making it suitable for data centers and IT loads that cannot tolerate even brief interruptions. The HYT1 is an ATS, built for industrial and commercial backup power where the transfer speed of a PC-class electromechanical device is fully sufficient and offers greater short-circuit withstand than STS alternatives. Within the HYT1 platform, the 250A frame’s 300ms contact transfer time bridges the gap for applications needing faster response from an electromechanical 3 phase automatic transfer switch.

Is there a DC automatic transfer switch?

Yes, DC automatic transfer switches exist for applications such as telecom sites, solar battery banks, and DC microgrids, typically at lower voltage and current ratings than AC counterparts. The HYT1 is designed specifically for AC 400V 3-phase distribution — this is reflected in its AC-33iB use category, AC control supply, and AC voltage monitoring. For buyers searching for a 3 phase automatic transfer switch in AC power distribution, the HYT1 platform provides a complete solution from 32A to 3200A. For DC applications, a separate product family is required; contact HUYU Electric to discuss DC transfer switch requirements if needed.