Current transformer Rittal SV 9677.280, white, single-piece

Rittal SV 9677.280 is a white current transformer supplied as a single-piece unit for use in electrical distribution and switchgear. It provides galvanic isolation and accurate current measurement for monitoring, metering and protection circuits. The compact form factor is intended for integration into distribution panels and industrial installations where space and clear identification are important.

Advantages

The single-piece design simplifies handling and installation, while the white housing allows for straightforward visual identification in control cabinets. The transformer offers accurate primary-to-secondary current conversion for connected meters and protection relays and is built to meet typical industrial mounting and safety requirements. Its compatibility with panel systems makes it practical for retrofit and new installations.

Suitable for (tasks / use cases)

• Current measurement for energy meters and submeters in distribution panels
• Feeding protection relays and monitoring devices in switchgear
• Integration into industrial electrical panels and control cabinets
• Retrofit projects where a single-piece, easy-to-install CT is needed

When it may not be suitable

This current transformer is designed for use in distribution and switchgear applications; it may not be suitable where multi-core or split-core transformers are required for live conductors that cannot be disconnected. It also may not be appropriate if specific mounting dimensions, higher accuracy classes, or specialized insulation ratings are required beyond standard panel installation needs.

Key specifications

• Type: single-piece current transformer for panel/switchgear integration
• Colour: white housing
• Application: measurement, metering and protection circuits
• Mounting: panel/switchgear compatible form factor for fixed installation
• Output: secondary current compatible with standard meters and relays (nominal secondary current)

How to use

Install the current transformer in the designated position within the distribution panel or switchgear according to the electrical schematic and local regulations. Route the primary conductor through the CT aperture and secure the unit mechanically as required. Connect the secondary outputs to the target metering or protection device, ensuring correct polarity and using appropriate shorting or burden resistors during commissioning and service. Verify connections and perform functional checks with appropriate test equipment before placing the circuit into normal operation.

What to consider before purchase

• Verify the primary conductor size and that the transformer aperture and mounting form factor fit the panel layout
• Confirm required secondary current and accuracy class for metering or protection purposes
• Ensure insulation and safety ratings meet local electrical standards for the intended installation
• Check mechanical compatibility with existing busbar spacing or mounting points in the cabinet

Usage recommendations

Use the Rittal SV 9677.280 only within its designed operating parameters, always install with the secondary circuit shorted or connected to measuring equipment to avoid open-circuiting the secondary, and follow national wiring regulations and manufacturer guidance for safe and reliable operation.