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MNS Type Low-Voltage Switchgear

MNS Type Low-Voltage Switchgear
MNS Type Low-Voltage Switchgear
Product Code : 14
Product Description

MNS Type Low-Voltage Switchgear


The design of MNS Type Low-Voltage Switchgear is the outcome of through research work of our professionals. The design and mechanism of this switchgear have been generated on the basis of cabinet type and electrical components used for the cabinet. Our organization has grown expertise in manufacturing of low voltage switchgear.

The application of this product can be noticed in power substation, power generation plant, metallurgical sector, petrochemical industry and steel plant that use electrical equipments with 50~60Hz frequency range and 660V rated voltage. The design and manufacturing technique of this low voltage switchgear conforms to GB7251-1991, IEC6043P VDEO660 and JB/T9661 versions of low voltage switchgear.

Standards and specifications

  • IEC60493 Low-voltage switchgear and control gear combination
  • GB7251.1-2005 Low-voltage switchgear assembly and control the first part
  • Q/HD. J5 090-2007 Enterprise standard of MNS series low-voltage switchgear
  • ZBK36001- 89 Low-voltage withdrawable switchgear

Working conditions

The normal working temperature for this product should ranges between -5oC to +40oC. On an average, the temperature should not exceed the level of +35oC during 24 hours of duration. Atmospheric Conditions:  As far as the matter of climactic condition is concerned, it can be said that the moisture level of surrounding environment should not surpass 50% humidity limit. The air should be free from dust particles and other pollution causing substances and precision of relative humidity should be maintained under low temperature. As for instance, for 90 % relative humidity, the limit of low temperature should be +20oC.     It should be placed 2000m above sea level. In case of slight change in temperature, moderate amount of dew can be noticed. It causes grade 3 pollution. This switchgear can be relocated and stored under the temperature range of  -25oC to +55oC. The temperature can rise at maximum +70oC within 24 hours. This switchgear should not be operated under severe temperature. Normal temperature is recommended for its operation. In case the aforementioned prerequisites are not possible to follow, then the client should consult with the manufacturer of this product.


The provided MNS type low-voltage switchgear is known for its versatile nature and modular design, It acts as a suitable voltage distribution cabinet in industries involved in chemical processing, petroleum, mining, infrastructure and metallurgy where reliable motor controlling system is used under low voltage condition. The MNS series switchgear can safely operate in less than 500oA low voltage. The advanced design of this switchgear enables it to integrate with various components and to work under severe working conditions.

Main circuit rated voltage(V)

AC 380(400),(660)

Auxuliary Circuit rated voltage (V)

AC 220, 380(400)

DC 110, 220

Rated frequency(Hz)


Rated insulated voltage(V)


Rated current (A)



Vertical bus (MCC)


Bus rated short-time withstand current(kA/1S)


Bus rated peak withstand current(kA/0.1S)


Power frequency test voltage(V/1 min)

Main circuit


Auxiliary circuit



Three-phase four-wire system


Three-phase five-wire system


Protection grade

IP30, IP40, IP54

Contact Us

4th Floor, Jinfeng Building, Optical Valley International Enterprise Center, East-lake High-tech District, Wuhan, Hubei, 430074, China
Phone :86-27-87170979