Schneider 1A/5A CT + IO current connector CCA634 for Sepam series 20, 40, 60, 80

The Schneider Electric CCA634 is a 1A/5A Current Transformer (CT) and Io current connector designed for use with Sepam Series 20, 40, 60, and 80 protection relays. It provides a secure interface for connecting three-phase current transformers and a residual (earth fault) current transformer, ensuring accurate current measurement and reliable protection in medium-voltage power distribution systems.

The CCA634 incorporates four interposing current transformers—three for phase current measurement and one dedicated to residual current (Io) acquisition—providing electrical isolation and impedance matching between the CT circuits and the Sepam relay. The connector supports both 1A and 5A CT inputs and maintains CT secondary circuit continuity during disconnection, enhancing safety and simplifying maintenance.

Key Features:

• Designed for Schneider Electric Sepam Series 20, 40, 60, and 80 protection relays
• Supports 1A and 5A current transformer (CT) inputs
• Connects three-phase CTs and residual (Io) current transformer
• Built-in four interposing CTs for impedance matching and electrical isolation
• Enables accurate phase and earth-fault current measurement
• Maintains CT secondary circuit continuity when unplugged for safer maintenance
• Ring lug terminal connections supporting 1.5–6 mm² conductors
• Ideal for medium-voltage switchgear, electrical substations, industrial power distribution, and protection relay installations
• Schneider Electric part number: 59629