FuseBox TPN 125A 4P Mains Switch

The CHINT IT1254 is a heavy-duty 125A 4-pole main switch (switch disconnector) designed for safe isolation and control of three-phase low-voltage electrical distribution systems with neutral switching. It is widely used as an incoming isolator (TPN main switch) in distribution boards, providing reliable manual disconnection of all live conductors for maintenance, safety, and system control.

With its 4-pole configuration (L1, L2, L3 + Neutral switching), the IT1254 ensures complete isolation of the supply, making it suitable for installations where full disconnection of neutral is required for compliance or operational safety. It is commonly installed in commercial buildings, industrial panels, and three-phase consumer units as the primary isolating device before downstream protective equipment such as MCBs, RCBOs, or MCCBs.

The device is designed for DIN rail mounting, allowing easy integration into standard distribution boards. It is rated for AC-22A utilization category, meaning it is suitable for switching mixed resistive and inductive loads commonly found in general power distribution systems. Its robust internal construction ensures reliable switching performance and long service life under normal operating conditions.