MNS Low Voltage Draw-Out Switchgear (up to 6300A)

Q: What standards does MNS switchgear comply with?

MNS switchgear is certified to IEC 61439-1/-2 for low-voltage switchgear assemblies and IEC TR 61641 Ed.3 for arc fault protection. Arc-proof certified up to 690V and 100kA. Protection degrees IP30, IP40, and IP54 are available.

Q: Does MNS support digital monitoring and SCADA integration?

Yes. MNS supports Modbus RTU, Profibus DP, Modbus TCP, Profinet, and IEC 61850. ABBAbility condition monitoring and temperature sensors for Emax2 circuit breakers are available for predictive maintenance and remote diagnostics.

MNS low voltage draw-out switchgear up to 6300A — IEC 61439-1/-2 certified, 100kA/1s short-time withstand, 1/4 module drawer granularity, up to 36 circuits per section, Form 4b separation. Factory-direct quote in 24h.

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Product Description

MNS Low Voltage Draw-Out Switchgear up to 6300A

Raydafon MNS low voltage draw-out switchgear is a modular, withdrawable switchgear system designed for power distribution and motor control centers in power generation, petrochemical plants, metallurgy, data centers, and infrastructure projects. Certified to IEC 61439-1/-2 and IEC TR 61641 Ed.3, the MNS platform supports a main busbar up to 6300A with 100kA/1s short-time withstand and peak withstand up to 220kA. Each functional unit is mounted in a withdrawable drawer that can be swapped in minutes without busbar shutdown — keeping critical facilities online while maintenance proceeds.

Up to 6300A 100kA / 1s Withstand IEC 61439-1/-2 Certified Up to Form 4b Separation

Raydafon MNS low voltage draw-out switchgear up to 6300A with modular withdrawable drawers — Figure 1: Raydafon MNS draw-out switchgear — modular withdrawable functional units with 1/4 module granularity and up to 36 circuits per section

Product Overview

MNS low-voltage withdrawable switchgear is suitable for power generation and supply systems with AC 50Hz and rated working voltage of 380V and below, such as power generation, transmission and distribution, petrochemical departments, factories and mining enterprises, building power supply and other industries. MNS low voltage draw-out switchgear is used for energy distribution, control, and reactive power compensation, especially for large power plants, petrochemical and other places with intensive automation, requiring dialogue interfaces and communication with computers, and can fully meet their needs.

Technical Specifications

MNS Electrical & Mechanical Parameters

Rated Working Voltage380V / 690V (Max)

Main Busbar Rated Current1600 / 2500 / 4000 / 6300 A

Short-Time Withstand (1s)50 / 80 / 100 kA

Peak Withstand Current105 / 176 / 220 kA (peak)

Distribution Busbar (Vertical)Up to 1500 A

Rated Insulation Voltage1000 V

Rated Frequency50 / 60 Hz

Protection DegreeIP30 / IP40 / IP54

Separation FormUp to Form 4b

Module Granularity1/4 module (E=25mm)

Max Circuits Per Section36

StandardsIEC 61439-1/-2, IEC TR 61641

MNS vs GCS: Key Differences

Choosing the Right Draw-Out Platform

Feature	MNS	GCS
Module Hole Pitch	25 mm (DIN 43660)	20 mm
Minimum Drawer Size	1/4 module	1/2 module
Max Circuits Per Section	36	22
Max Main Busbar	6300 A	4000 A
Max Short-Time Withstand	100 kA / 1s	50 kA / 1s
Double-Sided Cabinet	Supported	Not supported
Digital Monitoring	Modbus TCP / Profinet / IEC 61850	Optional

Which platform should you choose? If your project requires a main busbar above 4000A, more than 22 outgoing circuits per section, back-to-back cabinet layouts, or high-density data center deployment — MNS is the correct choice. For 4000A and below with cost sensitivity, GCS draw-out switchgear remains the more economical option.

Draw-Out Module Types

TYPE 01

Circuit Breaker Drawer

Houses ACB or MCCB for main and sub-distribution circuits. Supports 3-pole and 4-pole configurations up to 630A per drawer.

TYPE 02

Motor Starter Drawer

Direct-on-line (DOL), reversing, star-delta, soft-start, and VFD configurations. Compatible with ABB UMC100.3 and M10x motor controllers.

TYPE 03

Capacitor Compensated Drawer

Load-side power factor correction with switched capacitor stages. Reduces reactive power penalties and improves power quality.

TYPE 04

PT & Metering Drawer

Voltage transformers, current transformers, and multifunction meters for measurement, protection, and energy monitoring.

TYPE 05

Feeder Drawer

Outgoing feeder circuits with switch-fuse or MCCB protection. Available in plug-in, withdrawable, and fixed-mount variants.

TYPE 06

Smart Monitoring Drawer

Integrated temperature sensing, current/voltage monitoring, and remote diagnostics via Modbus TCP, Profinet, or IEC 61850.

Why MNS Leads in Draw-Out Switchgear

MNS — Core Performance Metrics

6300AMax Main Busbar

100kAShort-Time Withstand / 1s

36Circuits Per Section

1/4Module Drawer Granularity

Drawer Operation Workflow

Fault Detection & Alarm

Protection relay trips and signals the fault. The faulty functional unit is identified without affecting adjacent circuits.

Open Breaker

Operator opens the breaker locally or remotely. Mechanical interlock prevents unintended operation during maintenance.

Drawer to Test Position

Drawer is turned to the Test position — main circuit isolated, control circuit still live. Trip/close operation and interlock logic can be verified safely.

Swap or Service the Unit

Drawer is fully withdrawn to the Disconnected position. A spare drawer of the same rating is inserted and locked. No busbar shutdown required.

Return to Service

Drawer is turned back to the Connected position, breaker is closed, and the circuit is restored. Total downtime: typically under 30 minutes.

Structural Design Advantages

1/4 Module Granularity

MNS is the only mainstream draw-out platform with 1/4 module drawer granularity. This allows up to 36 circuits per section — roughly 64% more density than GCS — cutting cabinet count and floor space.

25mm Module Hole Pitch (DIN 43660)

Frame uses C-shaped steel profiles with 25mm hole spacing. Functional units can be repositioned or added without redesign or rewiring the busbar system.

Maintenance-Free Busbar System

ESLOK thread-locking screws with conical spring washers and Alu-zinc coated copper bars eliminate routine busbar retorquing — reducing lifecycle maintenance costs.

Up to Form 4b Separation

Busbar, functional unit, and cable compartments are fully isolated with metal partitions. Fault propagation between adjacent units is prevented, and live circuits remain protected during drawer service.

Double-Sided Cabinet Layout

MNS supports back-to-back and duplex arrangements with a common main busbar. This configuration can reduce footprint by up to 60% compared to single-sided alternatives.

Digital & SCADA Ready

Supports Modbus RTU, Profibus DP, Modbus TCP, Profinet, and IEC 61850. Temperature sensors for Emax2 breakers and ABBAbility condition monitoring enable predictive maintenance.

Industry Applications

Power Plants

Auxiliary power distribution and motor control centers for large single-unit capacity plants. The draw-out design minimizes downtime during routine breaker maintenance. See Medium Voltage Switchgear for upstream distribution.

Petrochemical Plants

Motor control centers for pumps, compressors, and process equipment. MNS low voltage draw-out switchgear handles large-scale petrochemical needs for centralized power control and computer interface. See the MNS & GCS low voltage switchgear range.

Data Centers

LV main distribution for co-location and hyperscale facilities. High circuit density per section and digital monitoring support N+1 redundancy architectures. Pair with the Remote-9001 SCADA monitoring unit.

Metallurgy & Mining

Rugged construction for dusty, high-temperature environments. 100kA withstand capacity handles the high fault currents typical of heavy industrial distribution. Integrates into YBM prefabricated substations.

Frequently Asked Questions

What is the maximum current rating of MNS draw-out switchgear?

The MNS system supports a main busbar rated current up to 6300A. Standard configurations include 1600A, 2500A, 4000A, and 6300A. The vertical distribution busbar is rated up to 1500A. Short-time withstand current is available up to 100kA for 1 second, and peak withstand current up to 220kA.

What is the difference between MNS and GCS draw-out switchgear?

MNS uses a 25mm module hole pitch versus GCS at 20mm. MNS supports 1/4 module drawer granularity and up to 36 circuits per section, while GCS minimum is 1/2 module with up to 22 circuits. MNS also supports double-sided cabinet layouts and short-circuit withstand up to 100kA. See GCS draw-out switchgear for comparison.

What standards does MNS switchgear comply with?

MNS low voltage draw-out switchgear is certified to IEC 61439-1/-2 (low-voltage switchgear assemblies) and IEC TR 61641 Ed.3 (arc fault protection, criteria 1 to 7). Arc-proof certified up to 690V and 100kA. Protection degrees IP30, IP40, and IP54 are available.

What motor starter configurations are available?

MNS withdrawable motor starter drawers support direct-on-line (DOL), reversing, star-delta, soft-start, and variable frequency drive (VFD) configurations. Standard module sizes include 4E, 8E, 12E, and 16E. Motor control and protection units such as ABB UMC100.3 and M10x are supported.

How many circuits can fit in one MNS section?

A single MNS section can accommodate up to 36 circuits when using 1/4 module drawers. This makes MNS one of the highest-density draw-out switchgear platforms available, significantly reducing cabinet count and floor space requirements.

Does MNS support digital monitoring and SCADA integration?

Yes. MNS low voltage draw-out switchgear supports serial communication protocols including Modbus RTU, Profibus DP, Modbus TCP, Profinet, and IEC 61850. ABBAbility condition monitoring and temperature sensors for Emax2 circuit breakers are available for predictive maintenance and remote diagnostics. See Remote Monitoring Units for integration details.

Related Equipment

For a complete power distribution solution, pair MNS low voltage draw-out switchgear with:

GCS low voltage draw-out switchgear up to 4000A — For 4000A draw-out requirements with 20mm module pitch
GGD low voltage fixed switchgear — Cost-effective fixed-mount sub-distribution
YBM prefabricated substations — Containerized substations with factory-integrated MNS cabinets
Remote-9001 monitoring unit — For smart monitoring and SCADA integration
Medium voltage switchgear — For upstream MV distribution from the transformer

Up to 6300A main busbar

100kA / 1s short-time withstand

1/4 module drawer granularity

Up to 36 circuits per section

IEC 61439-1/-2 certified

Up to Form 4b separation

Ready to Specify Your MNS Draw-Out Switchgear?

Share your busbar current, drawer configuration, and motor capacity — our engineers will reply with a tailored MNS lineup and factory-direct quote within 24 hours.

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