Wago LKW control bar 6-element for shorting current transformers model 848-493

Wago LKW control bar 6-element for shorting current transformers model 848-493 is a compact mechanical accessory designed to short secondary circuits of current transformers (CTs) used in protection, metering and testing applications. The six-element arrangement provides a reliable conductive path for safely shorting CT outputs during maintenance, commissioning or when isolating a faulty circuit. The unit is intended for integration into electrical panels and switchgear assemblies where a dedicated CT shorting link is required.

Advantages

The Wago LKW 6-element control bar offers a space-efficient design and straightforward operation, enabling fast and secure connection of multiple CT secondaries. Constructed for use in industrial and utility environments, it provides a consistent mechanical interface that reduces the risk of open-circuiting CT secondaries and helps preserve transformer integrity during work. Its modular six-element layout simplifies installation in compact busbar or terminal arrangements.

Suitable for

• Shorting secondary circuits of multiple current transformers in protection panels
• Temporary shorting during commissioning, maintenance and testing activities
• Integration into switchgear and distribution boards that require a dedicated CT shorting link
• Applications where a compact, multi-element shorting solution is preferred

When it may not be suitable

This control bar is intended specifically for shorting CT secondaries and is not a substitute for primary-side switching devices, fuses or protection relays. It may not be appropriate for installations that require built-in current limiting, complex switching logic, or where environmental ratings (such as special IP ratings or corrosion-resistant finishes) are mandatory beyond typical indoor panel conditions.

Key specifications

• Number of shorting elements: 6
• Function: Mechanical shorting bar for current transformer secondary circuits
• Mounting: Panel or switchgear integration (compact footprint)
• Application environment: Protection, testing, commissioning and maintenance of CT circuits
• Material characteristics: Conductive link elements with insulating mounting body (designed for electrical panel use)

How to use

Install the Wago LKW 6-element control bar into the designated positions in the CT terminal area of the panel or switchgear according to the system wiring diagram. Ensure all CT circuits are de-energized and that safety procedures are followed before connecting the shorting links. Engage the mechanical shorting links to connect CT secondaries when required for testing or maintenance; disengage and isolate again prior to re-energizing the primary circuits. Follow local electrical codes and the equipment manufacturer's instructions during installation and operation.

What to consider before purchase

• Confirm compatibility with the CT terminal spacing and panel layout where the shorting bar will be fitted
• Verify that a six-element shorting configuration meets the number of CT secondaries to be managed
• Check environmental and mounting requirements of your switchgear to ensure the product's suitability
• Ensure your maintenance procedures and safety practices cover CT shorting operations

Usage recommendations

Use the control bar only on CT secondary circuits that are de-energized and follow lockout/tagout procedures. Regularly inspect mechanical contacts for wear or corrosion and replace the unit if integrity is compromised. Coordinate shorting operations with protection relay settings and commissioning personnel to avoid unintended effects on monitoring or protection schemes.