MNS Series

Low-voltage Withdrawable Switchgear

A comprehensive solution that is standardized, modularized, and intelligent, capable of meeting the power distribution requirements of various systems. It is suitable for the control of power distribution, electrical energy conversion, and electrical energy consumption equipment.

Product Overview

The MNS series low-voltage withdrawable switchgear is designed for control and power distribution systems with a rated voltage of up to 690V and a rated frequency of 50Hz. It is used for the control of power generation, transmission, distribution, electrical energy conversion, and electrical energy consumption equipment. This switchgear complies with the GB/T 7251.2-2023 national standard.
The MNS series low-voltage withdrawable switchgear is available in both fixed and drawer-type configurations. According to customer’s requirements, the system can be expanded with intelligent protection components such as station control touchscreens, arc flash protection systems, automatic electrical fire extinguishing systems, and temperature measurement systems, enabling functions like temperature measurement, arc flash protection, and automatic electrical fire extinguishing. The standardized, modularized, and intelligent comprehensive solution can meet the power distribution requirements of various systems. Additionally, it can be paired with the KLD-PQC series hybrid harmonic filtering and compensation cabinets to ensure the power distribution system operate in good condition.

Product Characteristics

Compactness

accommodates a high density of functional units within a relatively small space

Versatility

features a modular design. Based on a C-type profile with a modulus of E=25mm, it enables various configurations and can be divided into standard units for protection, operation, control, power distribution, measurement, etc.;

Convenience

no special or complex tools are required

Interchangeability

functional units can be installed or removed as a complete unit, and units of the same specification are fully interchangeable

Safety

adopts a large number of high-strength and flame-retardant plastic engineering components, effectively enhancing safety and protection performance

Reliability

features optimal thermal cycling and heat dissipation , guaranteeing high quality of power supply and distribution

Compliant Standards:
JB/T9661-1999 Low-voltage withdrawable switchgear assemblies
GB/T24274-2019 Low-voltage withdrawable switchgear and controlgear assemblies
IEC61439-1:2021 Low-voltage switchgear and controlgear assemblies - Part 1: General rules
GB/T7251.2-2023 Low-voltage switchgear and controlgear assemblies - Part 2: Power switchgear and controlgear assemblies

Technical Parameters

Rated operating voltage 400/690V
Rated insulation voltage 690/1000V
Rated current of horizontal busbar 400A~6300A
Rated current of vertical busbar 630A~2000A
Rated short-time withstand current (RMS)(Is) / Peak value(kA) Horizontal busbar 10kA~100kA/105kA~250kA
Rated short-time withstand current (RMS)(Is) / Peak value(kA) Vertical busbar 50kA/130kA~150kA
Enclosure ingress protection IP30, IP40, IP31, IP41, IP42
Appearance dimension （W ×D × H） （600, 800, 1000）mm×（600, 800, 1000）mm×2200mm
Ambient temperature -5°C ~ +40°C, 24-hour average not exceeding +35°C
Relative humidity Daily average ≤ 95%, monthly average ≤ 90%
Altitude 2000m
Pollution level Level 3
Seismic intensity Not exceeding magnitude 8.0
Storage temperature -25°C ~ +55°C; up to +70°C for short periods;If the above conditions cannot be met, they shall be resolved through negotiation between the user and the manufacturer.
Technical Parameters

  • Rated operating voltage：400/690V

    Rated insulation voltage：690/1000V

    Rated current of horizontal busbar：400A~6300A

    Rated current of vertical busbar：630A~2000A

    Rated short-time withstand current (RMS)(Is) / Peak value(kA) Horizontal busbar：10kA~100kA/105kA~250kA

    Rated short-time withstand current (RMS)(Is) / Peak value(kA) Vertical busbar：50kA/130kA~150kA

    Enclosure ingress protection：IP30, IP40, IP31, IP41, IP42

    Appearance dimension （W ×D × H）：（600, 800, 1000）mm×（600, 800, 1000）mm×2200mm

    Ambient temperature：-5°C ~ +40°C, 24-hour average not exceeding +35°C

    Relative humidity：Daily average ≤ 95%, monthly average ≤ 90%

    Altitude：2000m

    Pollution level：Level 3

    Seismic intensity：Not exceeding magnitude 8.0

    Storage temperature：-25°C ~ +55°C; up to +70°C for short periods;If the above conditions cannot be met, they shall be resolved through negotiation between the user and the manufacturer.