100-225 Amp Automatic Transfer Switch, 3/4 Poles

Boasting cost-effective pricing and outstanding adaptability, this intelligent ATS automatic transfer switch offers flexible 3/4 poles options , perfectly matching standard 400V AC 50/60Hz power grids. Built-in microcomputer control supports both automatic and manual power switching with customizable 0-30s delay time. Certified to IEC and national standards, it delivers stable long-term performance with 5,000 mechanical service cycles and solid 2500V insulation resistance, serving as a dependable power backup solution for office buildings, hospitals, malls and other critical facilities.

Feature

• Wide Compatibility: Available in 3P/4P models with 100A–225A multiple current options, perfectly matching 400V AC dual power supply systems.
• Smart Microcomputer Control: Supports auto & manual dual operation modes, with 0–30s adjustable switching delay.
• Safe Double Interlock System: Adopts mechanical and electrical dual interlock structure, three switch positions avoid simultaneous connection of main and standby power.
• Compact & Versatile Design: Small lightweight body delivers stable reliable performance, widely applicable for hospitals, malls, airports and office buildings.

Details

1. Main Power Input Terminals: Connection ports designed to receive power from standard city grid electricity supply.
2. Backup Power Terminals: Interface terminals compatible with reserve power sources including generators and solar energy storage systems.
3. Manual Control Knob: Physical adjustment dial to manually shift power supply if the auto-switch function malfunctions.
4. Load Output Terminals: Output wiring terminals that deliver electricity to all connected downstream electrical equipment.
5. Installation Fix Holes: Pre-drilled positioning openings to securely mount the unit within electrical enclosures with ease.
6. Operation Control Panel: Integrated panel fitted with functional buttons.
7. Digital LCD Monitor: Embedded display screen that continuously presents the real-time operating state of the two power supplies.

100A-225A Automatic Transfer Switch Dimensions(Unit: mm)

100A-225A Automatic Transfer Switch Wiring Diagram

• The wiring diagram shown above is for reference only, and wiring layouts vary based on distinct product models and functional configurations.
• In the event of a fire, the firefighting control room will transmit an active EPS signal, which triggers tripping or disconnection of circuit breakers Q1 and Q2.
• Q1 and Q2 denote circuit breakers.
• KG stands for wiring terminals.
• R and N power status indicator lights are external accessories to be supplied by the customer.
• All components marked with dashed lines need to be prepared by the user separately.

• 3P refers to 3-pole circuit breaker and 4P means 4-pole circuit breaker.
• 24VDC (external) is supplied by the fire control center.