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Home > Medium Voltage Switchgear > Metal-Clad Switchgear > KYN61 Metal-Clad Withdrawable Medium-Voltage Switchgear

KYN61 Metal-Clad Withdrawable Medium-Voltage Switchgear

KYN61 metal-clad withdrawable medium-voltage switchgear is designed for indoor power distribution applications, featuring withdrawable vacuum circuit breakers for reliable switching, protection and control in utility, industrial and infrastructure power systems.

Available in the 40.5 kV rated-voltage class, with project-specific protection, control and interlocking configurations.

Key Ratings

  • Rated Voltage

    40.5 kV

  • Rated Current

    Up to 2500 A

  • Short-Time Withstand Current

    Up to 31.5 kA

  • Rated Frequency

    50 / 60 Hz

  • Circuit Breaker Type

    Withdrawable VCB

  • Note beneath Key Ratings

    Final ratings are confirmed according to switchgear configuration and project requirements.

Available Configurations

  • 01

    Incoming Feeder

    Incoming power supply with circuit breaker, protection and control functions.
  • 02

    Outgoing Feeder

    Feeder protection and switching for downstream distribution circuits.
  • 03

    Bus Coupler

    Bus sectionalizing and coupling between switchgear sections.
  • 04

    PT / Voltage Transformer Panel

    Voltage measurement, protection and monitoring according to project requirements.
  • 05

    Metering Panel

    Voltage and current measurement for system metering and monitoring.

Technical Specifications

Item English Content 
Rated Voltage 40.5 kV
Typical System Voltage 35 kV
Rated Frequency 50 / 60 Hz
Power-Frequency Withstand Voltage 95 kV
Lightning Impulse Withstand Voltage 185 kV
Rated Current Up to 2500 A
Rated Short-Time Withstand Current Up to 31.5 kA
Switchgear Type Metal-Clad
Circuit Breaker Type Vacuum Circuit Breaker
Circuit Breaker Arrangement Withdrawable
Main Busbar Material Copper / Project-Specific
Internal Arc Classification Project-Specific
Degree of Protection IP4X Enclosure / IP2X Compartments
Cable Entry Bottom / Project-Specific
Protection & Control Project-Specific
Installation Indoor
Applicable Standards IEC 62271-200 / IEC 62271-100

Note 1: Final ratings and protection levels are confirmed according to selected voltage class, equipment configuration, installation environment and project requirements.

Note 2: For insulation withstand values, the first value applies to phase-to-earth and phase-to-phase insulation; the second value applies across the isolating distance.

Standards, Testing & Documentation

IEC-Oriented Design

IEC-Oriented Design

Designed with reference to applicable IEC requirements and project specifications.
IEC 62271-200
IEC 62271-100

Factory Routine Testing

Factory Routine Testing

Routine tests are carried out before shipment according to product configuration and applicable requirements.

Project Documentation

Project Documentation

Technical datasheets, drawings and test records can be provided for project review.

Download Product Catalogue

Get the detailed product information, technical data and typical configurations.

Download Product Catalogue

Discuss Your KYN61 Switchgear Requirements

Share your system voltage, rated current, short-circuit rating, single-line diagram and project specifications with our engineering team.

Request a Quote Talk to Our Engineers

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© 2026 TOONICE. All rights reserved.

Manufactured by Toonice Electric Power Technology Co., Ltd.

Exported by Wenzhou Naisite Electric Co., Ltd.

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