Schneider ZCT-120-Z | zero phase current transformer for EOCR – ZCT-120 – 200 / 1.5 mA

General Description:

The Schneider ZCT-120-Z is a Zero Phase Current Transformer (ZCT) used in combination with EOCR (Electronic Over Current Relay) units. It is designed to detect residual (earth leakage) current and enhance system safety. With its 120 mm internal diameter, it’s ideal for larger cable or busbar systems.

Key Features:

• Model: ZCT-120-Z

• Type: Zero Phase Current Transformer

• Application: Leakage current detection for EOCR units

• Current Ratio: 200 A / 1.5 mA

• Internal Diameter: 120 mm

• Output Signal: Analog current for EOCR input

• Mounting: Panel or surface mounting

Technical Specifications:

• Primary Current Capacity: Up to 200 A

• Secondary Output: 1.5 mA

• Opening Diameter: 120 mm (suitable for large cable bundles or busbars)

• Operating Frequency: 50/60 Hz

• Insulation Resistance: High-grade for safe operation

• Operating Temperature: -10°C to +60°C

• Compatible Relays: Works with Schneider EOCR units like EOCR-3DE, SS, SE2 series

Typical Applications:

• Earth fault detection in motor control centers (MCCs)

• Leakage current monitoring in industrial machines

• Electrical safety systems in distribution boards

• Large cable installations requiring wide-core CTs

• Used with Schneider EOCRs for precise and fast fault response

Benefits:

• Large 120 mm diameter for flexible installation over large conductors

• Highly sensitive detection for earth leakage currents

• Improves electrical safety and reduces downtime

• Reliable performance in demanding industrial environments

• Seamless integration with Schneider protection systems