Current transformer Rittal SV 9677.380 — white, single-piece

Rittal SV 9677.380 is a white, single-piece current transformer designed for integration into electrical switchgear and distribution panels. It provides a compact solution for measuring and monitoring alternating current in control cabinets and distribution systems. Supplied as one unit, the transformer is intended for use where a reliable current sensing element is required for metering, protection relays or energy monitoring devices.

Advantages

The single-piece design simplifies installation and replacement in compatible enclosures. Its white housing offers visual consistency with many control cabinet interiors and panels. The transformer delivers stable current sensing suitable for downstream meters and protective equipment, and its form factor is optimized for use with busbar and panel mounting arrangements.

Suitable for (tasks / use cases)

• Current measurement for energy metering and monitoring systems
• Input for protection relays and overload detection devices
• Replacement or upgrade of a single-phase current transformer in switchgear
• Integration in control cabinets and distribution panels with matching mechanical space

When it may not be suitable

This current transformer is intended for installations that require a single sensing element; it may not be suitable for multi-core or multi-phase transformer needs unless used in combination with additional units. It is designed for specific mechanical and electrical compatibility with panel and busbar arrangements, so installations with non-standard mounting space or different centre-to-centre busbar spacing may require alternative models.

Key specifications

• Color: white
• Unit type: single-piece current transformer (single unit supply)
• Primary function: AC current sensing for measurement and protection
• Intended installation: panel and switchgear integration
• Typical applications: metering, relay input, energy monitoring

How to use

Install the transformer in the designated panel position, ensuring correct orientation and secure mechanical fastening according to the enclosure’s layout. Route the primary conductor or busbar through the transformer aperture without damaging insulation. Connect the secondary terminals to the measuring device or protection relay using suitable gauge wiring and adhere to local wiring regulations. Verify connections and perform a functional test with low current before placing into full operation.

What to consider before purchase

• Confirm mechanical compatibility with your enclosure or busbar spacing and available mounting space
• Ensure electrical compatibility with the metering or protection device’s input requirements
• Check required primary conductor dimensions and insulation to fit through the transformer aperture
• Verify that a single-unit transformer meets your system’s phase and channel requirements

Usage recommendations

For reliable measurement results, use this current transformer with appropriately rated meters and relays, secure all connections, and follow local installation standards. When replacing an existing unit, compare mechanical dimensions and terminal arrangement to ensure direct compatibility.