MNSZ Low-Voltage Withdrawable Switchgear

CEEG MNSZ Low-Voltage Withdrawable Switchgear

MNSZ low-voltage withdrawable switchgear adopts a modular design with high functional unit density and strong breaking capacity. It supports interfaces with automation and monitoring systems, enabling refined operation and maintenance management.

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180-1334-5718

Scope of application

Core Urban Areas

Space-constrained zones with limited land availability, focusing on freeing up ground space.

Landscape-Sensitive Areas

Parks, squares, and similar public spaces, emphasizing visual harmony and low-noise operation.

Urban Renewal Projects

Construction-restricted areas, focusing on rapid refurbishment and convenient maintenance access channels.

Product Description

1 Design features: Compact structure with modular design, strong versatility, and flexible assembly.

2 Performance advantages: High breaking capacity, excellent dynamic and thermal stability, flexible electrical schemes, and high protection degree.

3 Application scope: Suitable for AC 50 (60) Hz power distribution systems with rated voltage up to 380 V.

4 Main functions: Used for power generation, transmission, energy conversion, and control of power-consuming equipment.

5 Application scenarios: Widely used in industrial, energy, and infrastructure sectors, meeting modern power distribution requirements.

Product Features

Compact design

Accommodates more functional units within limited space, maximizing space utilization efficiency.

Modular design

Standardized units enable functions such as protection, operation, switching, control, regulation, measurement, and indication, allowing flexible user configuration.

Space-saving

Significantly reduces the space required for storage and transportation of prefabricated components.

High safety

Extensive use of high-strength flame-retardant engineering plastic components significantly enhances protection performance.

Easy assembly

No complex special tools required, ensuring simple and efficient installation.

Electrical interlocking for misoperation prevention

Complete mechanical and electrical interlocking systems prevent load switching operations and incorrect handling, improving operational reliability.

Main Parameters

Rated Operating Voltage	up to 380 V
Rated Insulation Voltage	660V
Rated Current	Main Busbar up to 4000 A
Rated Short-Time Withstand Current	50kA/1s
Rated Peak Withstand Current	105kA
Protection Degree (IP Code)	IP30~IP54

Implementation Standard

GB/T 7251.1 General Rules for Low-Voltage Switchgear and Controlgear Assemblies

GB/T 7251.3 Special Requirements for Low-Voltage Switchgear and Controlgear Assemblies

GB/T 15576 Low-Voltage Withdrawable Switchgear Assemblies

IEC 61439 series International Standards for Low-Voltage Switchgear and Controlgear Assemblies

IEC 60947 series Requirements for Low-Voltage Switchgear and Controlgear

DL/T 404 Ordering Technical Conditions for Low-Voltage Power Distribution Equipment in the Power Industry

Technical Advantages

R&D Cloud Platform

An integrated digital platform combining electromagnetic optimization design, parametric modeling, performance analysis, structural optimization, and automatic drawing generation. It enables transformer design resource sharing and efficient data management, including search, modification, and version control.

Simulation Analysis

Comprehensive multi-physics simulation covering fluid flow, thermal field, electric field, leakage magnetic field, transient processes, and short-circuit forces. Each transformer series is optimized through thermal and flow analysis to accurately control winding temperature rise and hotspot distribution, ensuring reliable and stable performance.

Smart Operation & Maintenance Platform

By collecting key data such as temperature, current, voltage, vibration, and grid harmonics, the system enables real-time power quality analysis and fault alarms. It also supports mobile access for remote monitoring and intelligent O&M management.