The
TZS-40 Zero Phase Current Transformer (Z-CT) is engineered to deliver
accurate and stable leakage current detection in three-phase electrical installations. Designed to work seamlessly with
TERASAKI earth leakage relays (ELR) such as
TZS-AD, this Z-CT plays a critical role in protecting equipment, property, and personnel from earth faults.
With support for 3-phase 4-wire systems up to 257A, the TZS-40 accommodates heavy-duty industrial wiring while maintaining precise current balance detection. Its 40mm internal diameter allows easy installation over bundled conductors, and the robust insulated body ensures long-term performance even in demanding electrical panels.
Trusted for its build quality, accuracy, and compatibility, the TZS-40 is widely used in industrial panels, commercial buildings, factories, and power distribution systems. Backed by TERASAKI’s reputation for reliability, this Z-CT offers peace of mind, fast fault response, and dependable protection.