Current transformer Rittal SV 9677.085, white, single unit

The Rittal SV 9677.085 is a white current transformer supplied as a single unit, intended for installation in electrical panels and switchgear. It provides galvanic isolation and a measurable secondary current proportional to the primary conductor, enabling accurate current monitoring, protection relay interfacing and integration with metering equipment in control and distribution systems.

Advantages

The device offers stable transformation characteristics and a compact form factor that facilitates mounting in confined panel spaces. Its neutral white housing assists visual integration into standard switchgear designs while the single-unit supply simplifies inventory and installation planning. The transformer is designed for reliable performance in monitoring and protection circuits where consistent secondary output and isolation are required.

Suitable for

• Current measurement and monitoring in low-voltage distribution and control panels
• Feeding protection relays and meters that require a standard secondary current
• Applications where galvanic isolation between primary conductor and measuring equipment is needed
• Integration into compact switchgear layouts with limited space

When it may not be suitable

This transformer is intended for panel and switchgear integration and may not be suitable for direct connection in high-voltage transmission systems or where special environmental ratings (e.g., outdoor weatherproof or extreme temperature tolerance) are required. If a multichannel or multi-core transformer is needed for simultaneous measurement of several conductors, a different product form factor should be considered.

Key specifications

• Color: white
• Supply form: single unit
• Application: current measurement and isolation for monitoring and protection circuits
• Mounting: suitable for installation in electrical panels and switchgear

How to use

Install the current transformer according to the panel manufacturer’s wiring layout and local electrical standards. Pass the primary conductor through the transformer window or connect as specified by the manufacturer, then connect the secondary terminals to the measuring device or protection relay using appropriately rated leads. Verify correct polarity and secure mechanical fastening to avoid vibration. After wiring, perform insulation and continuity checks and validate the secondary output under controlled load conditions before placing into normal operation.

What to consider before purchase

• Ensure the transformer's primary current rating and secondary output meet the requirements of your monitoring or protection devices
• Confirm mechanical compatibility with your panel or busbar spacing and mounting method
• Check required insulation, environmental and safety standards for your installation location
• Verify connection type and terminal accessibility for straightforward wiring

Usage recommendations

Use the Rittal current transformer in compliance with applicable electrical standards and follow the manufacturer's installation instructions. Periodically inspect terminal connections for tightness and signs of overheating, and validate the secondary current with calibrated instruments after commissioning and during maintenance intervals.