TOMZN TO219G 63A 400V AC Dual Power Manual Transfer Switch (MTS)

TOMZN TO219G 63A 400V AC Dual Power Manual Transfer Switch (MTS) Price in Bangladesh

The TOMZN TO219G is a 4-pole manual transfer switch (MTS) rated for 63A at 400V AC. It allows for manual switching between two independent power supplies (e.g., City Power and Generator) while providing a center “OFF” position for complete circuit isolation and safe maintenance.

Technical Specifications

Features

• 4-Pole Configuration: Simultaneously switches 3 phases and the Neutral line, ensuring total isolation and safety for 3-phase 4-membered systems.
• Mechanical Interlock: A built-in physical barrier prevents the handle from engaging both power sources at once, eliminating the risk of back-feeding and short circuits.
• Three Stable Positions (I-O-II): * Position I: Connects to Source 1 (Grid).
  • Middle Position (O): Disconnects all loads (Safety/Maintenance mode).
  • Position II: Connects to Source 2 (Generator/Solar).
• High Breaking Capacity: Rated to handle up to 63A continuous current with high short-circuit making capacity for industrial-grade protection.
• Flame Retardant Material: Constructed with high-quality, heat-resistant PA66 plastic for maximum durability in harsh environments.
• Easy Installation: Standard 35mm DIN rail mounting makes it compatible with most modern electrical panels and MCB boxes.

Benefits

• Prevents Back-Feeding: Crucial for protecting utility workers by ensuring your generator power never leaks back into the public grid.
• Maintenance Safety: The center “OFF” position acts as a physical isolator, allowing you to work on downstream wiring without cutting power to the entire building.
• Versatile Application: Can be used in 3-phase industrial setups or high-load single-phase residential setups requiring Neutral switching.
• Cost-Effective: A durable, non-electronic solution that isn’t prone to software glitches or surge-related board failures common in automatic switches.

How It Works (Wiring Basics)

1. Incoming Lines: Connect the Grid (Source 1) to the top terminals (1, 5, 9, 13) and the Generator (Source 2) to the other top terminals (3, 7, 11, 15) as per the specific wiring guide.
2. Outgoing Load: The bottom terminals (2, 6, 10, 14) are connected to your main distribution busbar/home load.
3. Operation: * Flip up for Grid.
   • Center for Total Off.
   • Flip down for Generator.

Packaging Content

• 1x TOMZN TO219G 4-Pole 63A Manual Transfer Switch
• 1x Basic Wiring Diagram/User Instruction

Perfect For

• Homeowners with Generators: Safely switching between WAPDA/DESCO and a petrol/diesel generator.
• Industrial Control Panels: Managing dual utility feeds for machinery.
• Solar PV Systems: Switching between inverter output and grid bypass.
• Data Centers/Server Rooms: Manual override for secondary backup lines.

Why Should You Buy

The TOMZN TO219G is the gold standard for budget-friendly, high-safety manual changeovers. At a 63A rating, it can comfortably handle the load of a large home (including multiple ACs) or a small workshop. Its mechanical interlock is a life-saving feature that prevents human error, making it a mandatory upgrade for anyone still using old-fashioned “knife” switches. In the world of 2026 electrical safety, the TO219G is the most reliable “bridge” between your power sources.