Since 2002, TOMZN has been a trusted leader in new energy electrical solutions, providing innovative devices for reliable power management. The TOMZN transfer switch category specializes in dual power automatic transfer switches (ATS), designed to seamlessly switch between two power sources—such as utility grid, solar PV inverters, generators, or city power—ensuring continuous, uninterrupted supply to critical loads. These DIN rail-mounted ATS units feature fast switching (often under 50ms in PC-level models), built-in protection, and options for WiFi smart control via eWeLink, making them ideal for residential backup, solar hybrid setups, commercial facilities, and off-grid applications.
The Importance of Dual Power Transfer Switches
Power outages or source failures can disrupt operations, damage equipment, or compromise safety. A dual power automatic transfer switch monitors primary and backup sources, automatically transferring load to the available source when issues like voltage loss, phase failure, or outages occur. TOMZN ATS models deliver rapid, reliable switching with minimal interruption, supporting applications where downtime is unacceptable—such as home solar systems with battery storage, emergency lighting, servers, pumps, or medical equipment. Many incorporate MCB-style protection for overload and short-circuit safeguards during transfer.
TOMZN Transfer Switch Product Range: Versatile ATS for Single-Phase and Three-Phase Needs
TOMZN’s transfer switch lineup focuses on automatic dual power solutions, with strong emphasis on PV/inverter compatibility and uninterrupted performance:
- Single-Phase (2P) ATS Models Popular options include the TOMZN TOQ3-2P series (e.g., TOQ3-2P/63 and TOQ3-2P/125) rated at 63A or 125A, 230V AC, 50/60Hz, MCB type. These terminal-style automatic transfer devices support 1-phase setups, switching between grid/PV/generator with switch times under 4 seconds in standard models. Additional variants like 2P 63A/100A/125A DIN rail ATS provide uninterrupted transfer for solar and inverter systems.
- Three-Phase (3P and 4P) ATS Models For balanced three-phase applications, models cover 3P (three-phase) and 4P (three-phase four-wire) configurations at 63A, 100A, or 125A. Examples include 3 Phase DIN Rail ATS (4P 63A/100A/125A, 380V) and TOMZN TOQ3-4P/125 (4P, 125A, 230V/380V compatible). These ensure seamless power continuity in larger loads like industrial equipment, multi-phase HVAC, or commercial solar arrays.
- WiFi Smart ATS with eWeLink Integration Advanced smart variants, such as TOMZN 110V/120V Three Phase WiFi Smart ATS (2P/3P/4P, up to 125A) and 230V models (eWeLink-enabled), add remote monitoring and control via the eWeLink app. Features include timers, scheduling, status alerts, and uninterrupted switching—perfect for modern smart homes or remote-managed solar setups.
- Specialized and Mini Series Compact options like TOMZN Mini DIN Rail ATS (2P/3P/4P, 63A/100A) and models with PC-level switching (<50ms, no interruption) cater to space-constrained panels. Some support 2 inputs/1 output configurations, with MCB integration for added circuit protection.
All models mount easily on standard DIN rails, operate at AC 50/60Hz, and prioritize new energy compatibility (e.g., PV strings, inverters, batteries).
Key Features and Benefits of TOMZN Transfer Switches
TOMZN ATS units combine reliability, speed, and intelligence:
- Automatic Dual Power Switching — Detects faults in primary source and transfers load to backup seamlessly.
- Uninterrupted Power Transfer — PC-level models achieve sub-50ms switching with minimal or zero interruption.
- Wide Current Ratings — 63A to 125A (some higher in related series) to handle residential to medium commercial loads.
- Multi-Pole Flexibility — 2P for single-phase, 3P/4P for three-phase systems.
- MCB-Type Protection — Built-in overload/short-circuit safeguards in many models.
- WiFi Smart Control — eWeLink app for remote on/off, monitoring, timers, and notifications.
- PV and Inverter Optimized — Designed for solar hybrid/grid-tie/generator setups.
- Easy DIN Rail Installation — Modular design fits standard distribution boards.
- Manual Override Option — Switch to manual mode for testing or forced selection.
- Robust Voltage Compatibility — 110V/120V, 220V/230V, 380V/400V options across models.
These attributes ensure dependable performance, reduced energy risks, and enhanced system uptime.
Applications of TOMZN Transfer Switches
TOMZN transfer switches excel in:
- Solar PV and hybrid inverter systems — Automatic failover between grid and solar/battery.
- Home backup power — Grid to generator switching for uninterrupted essentials.
- Commercial and industrial setups — Three-phase protection for machinery, lighting, or servers.
- Off-grid or remote locations — Reliable source selection with smart remote access.
- Emergency systems — Critical loads like pumps, security, or medical devices.
Installers benefit from straightforward wiring and DIN rail compatibility.
Why Choose TOMZN Transfer Switches?
TOMZN delivers over two decades of expertise in new energy protection, offering ATS solutions that balance affordability, innovation, and reliability. With fast switching, smart features, and strong PV compatibility, these transfer switches provide peace of mind in unstable power environments. Users value the seamless integration, app control options, and proven durability.