MLS cabinet body is made of 2mm thick Al-Zn coated steel sheet. Various subsections and functional units are  assembled with grade assembled with grade 8.8 self-tapping screws using E=25mm modulus holes. The framework and enclosure has adequate strength and rigidity and capable of withstanding certain mechanical stress, electrical stress and thermal stress and  can withstand the dampness during the normal service. The door panels are made of 1.5mm thick quality steel sheet and hinges have an opening angle of at least 120°. The door surface is sprayed a coat of epoxy powder. IP rating can be IP30, IP40, IP31, IP41, IP42, IP55.

The main busbar can be a three phase four wire system or five wire system and fixed to a subsection by insulation support. Dualbar structure is used for rated current of 4000A or above system. The vertical busbar in MCC can have a rated current up to 1600A and be equipped with 3 -pole and 4 -pole systems. Internal safety barriers separate the busbar compartment from the equipment compartment to prevent operators from coming into contact with dangerous live parts. The compartment can be up to Form 4b. Protective conductor (PE) lines along the full length of the cabinet and vertical branch and earthing mark are also provided.

Safety and Reliability.Thecompartments inside the cubicle can be divided into horizontal busbarcompartment, vertical busbar compartment, functional unit compartment, andexternal terminal compartment.The extensive compartmentalization increases thesafety, reliability, and serviceability by preventing unexpectedshock. It is suitable for urban powergrids, commercial buildings, hospitals and universities among otherapplications.

Customization andScalability. Depending on the structure of their functional units, MCC cubiclescan be withdrawable type, plug-in typeor fixed type.Fixedunits can equip with 3-pole or 4-pole molded breakers withcurrent of 160A-2000A. The height of standard modules varies from 8E/2 to 72E. Plug-in units can be used as feeders or motor controlunits with current of 160A~800A and standard modules of 8E/2 to 36E. Withdrawable units are of modular design and consist of standard modules ranging from 8E/4 to 24E and suitable for feeders and motor controlunits.

They are easy to use, replace, and maintain. The working state of thecontrol unit is clearly displayed on position indicator area on the panel. Areliable mechanical interlocking is used for preventingmaloperation.

Suitability for simpleindoor installation and convenient maintenance. Unlikeordinary busbar connections, GEIS utilizes a unique hole-less lapping technology for busbar connections, which facilitates on-site installation and maintenance.

Standard: IEC61439-2:2020