Tomzn TOQ5-250/4P Handle Type 250A 4P AC Three Phase Dual Power Automatic Transfer Switch ATS

The Tomzn TOQ5-250/4P Handle Type Automatic Transfer Switch is a robust 4-pole ATS designed to manage seamless switching between two AC power sources in high-load three-phase systems. With a rated current capacity of 250A, it is ideal for commercial, industrial, and large residential backup applications.

Built with manual/automatic control modes and a secure handle mechanism, this ATS ensures reliability and operator control during maintenance or emergencies.

Key Specifications:

Model: TOQ5-250/4P

Rated Current: 250A

Phase Type: 3-Phase 4-Pole (A, B, C, N)

Rated Working Voltage: 400V AC (50/60Hz)

Control Voltage: 220V AC

Insulation Voltage: 800V AC

Impulse Withstand Voltage: 6kV

Switching Time: <2.5 seconds

Operation Modes:

Automatic (auto switch between power sources)

Manual (control via handle

Application and Use:

Automatically prioritizes Normal Power

Switches to Reserve Power during outages

Ideal for industrial machinery, commercial buildings, backup generators, and solar systems

⚠️ Note: This switch does not start or stop generators. It only switches power input. Power is interrupted briefly during switching (under 2.5 seconds).