AC Changeover Switch 4P

Noark EX9BT3G-4 – 4-Pole Changeover Switch

The EX9BT3G-4 series is a manual changeover switch designed for safe and reliable source selection between two AC power supplies. It provides a clear, mechanical switching solution ideal for backup generator systems, inverter/utility selection, and any installation where two supplies must be isolated and switched with full pole separation.

Key Features

• 4-pole switching for complete isolation of all line conductors.
• Manual, positive-action handle for clear and reliable source selection.
• Robust internal contacts designed for long mechanical life and dependable performance.
• DIN-rail mountable for fast installation in distribution boards and control panels.
• Suitable for residential, commercial, and light-industrial switching applications.
• Clearly marked I–0–II positions for intuitive operation and safe changeover.

Typical Applications

• Switching between utility power and backup generator supply.
• Source selection between inverter output and grid input in hybrid systems.
• Manual transfer switching in DBs, control panels, and off-grid installations.
• Any application requiring safe AC changeover with full 4-pole isolation.

Installation Notes

• Mount on standard DIN rail inside a suitable enclosure or DB.
• Ensure all conductors are fully isolated using the 4-pole configuration.
• Use appropriately sized cabling and follow local electrical standards.
• Confirm correct I–0–II orientation during installation for intuitive operation.

The EX9BT3G-4 series offers a reliable, installer-friendly AC changeover solution for systems requiring dependable manual source switching and full conductor isolation.