Fused disconnect switch Rittal SV 9677.060 — 1‑pole, current transformer, white

Rittal SV 9677.060 is a 1‑pole fused disconnect switch intended for installation in control cabinets and distribution panels. The unit is supplied in white and integrates a current transformer, combining fused isolation with the ability to measure or interface with protection and monitoring systems. This product is intended for applications where a single‑pole disconnection and current sensing are required in compact electrical enclosures.

Advantages

The fused disconnect switch provides a compact, single‑pole solution that simplifies wiring and space planning in distribution panels. Integration of a current transformer allows direct current measurement or connection to protection relays without additional external transformers. The white enclosure aids visual identification and integration into standard cabinet interiors while the fused design gives straightforward overcurrent protection and safe isolation for maintenance.

Suitable for (tasks / use cases)

• Single‑pole isolation in control cabinets and switchboards
• Measurement and monitoring of current via the integrated current transformer
• Integration with protection relays and energy monitoring systems
• Compact installations where space is limited and fused protection is required

When it may not be suitable

This single‑pole fused disconnect is not intended for three‑phase primary isolation where multi‑pole or combined disconnection is required. Applications that demand higher rated pole counts or different enclosure colours for specific safety coding may require alternative devices. Also, if external metering or multiple independent current channels are needed, a dedicated separate current transformer or multi‑channel sensing solution could be more appropriate.

Key specifications

• Poles: 1‑pole
• Protection type: fused disconnect
• Integrated current transformer for measurement/protection interface
• Colour: white
• Intended mounting: control cabinets and distribution panels

How to use

Mount the fused disconnect switch in an appropriate panel cutout or rail position according to the cabinet layout and local installation standards. Connect the incoming and outgoing conductors to the specified terminals, ensuring correct fuse type and rating are fitted for the circuit. Use the integrated current transformer secondary connections to feed protection relays or meters, taking care to observe correct polarity and to short or terminate the CT secondary when the primary circuit is de-energised, according to safety practice. Perform insulation and continuity checks before energising the circuit.

What to consider before purchase

• Required fuse type and rated current for the circuit
• Whether a single‑pole disconnect meets your isolation and safety requirements
• Compatibility of the integrated current transformer with your meters or protection relays (secondary ratio and polarity)
• Available space and mounting method in the control cabinet or panel

Usage recommendations

Install and service this device following local electrical codes and Rittal installation guidance. Verify fuse ratings and CT connections before initial energisation; ensure CT secondaries are shorted or properly terminated when disconnected from measuring devices to avoid high secondary voltages.