MNS Low-Voltage Switch Cabinet
The MNS low-voltage switch cabinet is manufactured by LYE Technology for three-phase 50–60 Hz systems at 400 V or 690 V and currents up to 6300 A. A 25 mm module C-section frame takes eight drawer sizes from 8E/4 to 24E, so up to 36 outgoing circuits can sit in a single cubicle.
- Rated working voltage: 400 V (690 V) and below
- Rated current: Up to 6300 A
- Cabinet size: H 2200 (±20%) mm, W 1000–600 mm, D 1000–600 mm
- Drawer sizes: 8E/4, 6E/2, 8E/2, 6E, 8E, 12E, 16E, 24E
- Enclosure protection: IP41 / IP40, impact class IK10
MNS Low-Voltage Switch Cabinet: Key Features & Typical Use
Eight Drawer Sizes, One Frame
The MNS frame is assembled from 25 mm module C-section steel with an effective height of 1800 mm, and the functional units come in eight drawer sizes: 8E/4, 6E/2, 8E/2, 6E, 8E, 12E, 16E and 24E. A single cubicle can therefore hold 36 small outgoing circuits in 8E/4 drawers or nine larger 8E drawers, without changing the enclosure.Interlocked for Connection, Test and Disconnect
Every drawer size provides defined connected, test and disconnected positions with mechanical interlocking, so a feeder can be isolated and tested without opening the busbar compartment. The smaller 8E/4, 6E/2 and 8E/2 units use FZID metal split adapter units and a hand-pull propulsion mechanism, while the 12E, 16E and 24E drawers use a hand-cranked mechanism for the heavier breakers.Designed Around Cable and Heat
Cable entry, busbar routing and load ratings were chosen together: the incoming cubicle carries up to 1500 kg and dissipates 2490 W, the control cubicle 1530 W. Ventilation openings at the lower front, upper rear, both lower rear door sections and the top of IP40 units let the enclosure form a natural chimney, which keeps the internal temperature rise within limits without forced cooling in normal duty.Built for Plants That Cannot Stop
The MNS is aimed at installations where a single feeder outage is expensive: power plants, petroleum and chemical plants, hospitals, railways, highways, airports, mining and large buildings. The shell is cold-rolled steel with a light grey epoxy powder electrostatic coating, the frame is C-section steel and the support beams are aluminium-zinc coated, so the structure stays rigid and corrosion-resistant in an industrial atmosphere.MNS Low-Voltage Switch Cabinet Specifications & Technical Data
| Parameter | Details |
|---|---|
| Product | MNS 0.4 kV low-voltage switch cabinet |
| Cabinet height | 2200 (+/-20%) mm |
| Cabinet width | 1000 mm to 600 mm |
| Cabinet depth | 1000 mm to 600 mm |
| Material type | Metal type |
| Structure type | Assembled, withdrawable |
| Place of use | Indoor |
| Enclosure protection degree | IP41, IP40 |
| External mechanical impact protection | IK10 |
| Maximum load | Incoming cubicle 1500 kg, control cubicle 1500 kg |
| Heat dissipation capacity | Incoming cubicle 2490 W, control cubicle 1530 W |
| Main frame | C-section steel, modulus E = 25 mm, effective height 1800 mm |
| Drawer specifications | 8E/4, 6E/2, 8E/2, 6E, 8E, 12E, 16E, 24E |
| Circuits per drawer size | 8E/4 up to 36; 6E/2 up to 24; 8E/2 up to 18; 8E up to 9 |
| Rated working voltage | 400 V (690 V) and below |
| Rated current | 6300 A and below |
| Rated frequency | 50–60 Hz, three-phase AC |
MNS — a Low-Voltage Switch Cabinet Sized Around the Load, Not the Catalogue
The MNS exists because a plant rarely needs one kind of outgoing circuit. It needs a few heavy feeders, a large number of small motor circuits and some control loops, all fed from the same busbar. Eight drawer sizes on a 25 mm module frame let that mix live in one cubicle row, with rated currents up to 6300 A at 400 V or 690 V.This family of equipment is described in tender documents as MNS type low-voltage switchgear, drawer-type or withdrawable LV switchgear, or simply a low-voltage motor control centre. Compared with a fixed board, the MNS is chosen when the outgoing circuit list is long and mixed, and buyers who compare manufacturers should ask how many drawer sizes a supplier actually makes, because fewer sizes means more wasted cubicle height.The frame is assembled from C-section steel with an 1800 mm effective height. Every drawer offers connected, test and disconnected positions with mechanical interlock, and the heavier 12E, 16E and 24E units use a hand-cranked propulsion mechanism rather than a pull handle. Ventilation openings at the lower front, upper rear and cabinet top give the enclosure a natural chimney path.Typical duties are power distribution and centralised motor control in power plants, petroleum and chemical works, hospitals, railways, airports and mining operations, plus capacitor compensation. LYE builds the MNS shell and frame in-house, so busbar arrangements and drawer combinations can be adapted to your single-line diagram while the enclosure geometry stays standard.Factory-Direct MNS Low-Voltage Switch Cabinet Manufacturer & OEM / ODM
We Manufacture, You Brand
LYE Technology (Zhejiang) Co., Ltd. is a national high-tech enterprise and manufacturer in Wenzhou, China: sheet-metal fabrication, welding, powder coating, busbar machining and final assembly run on our own factory lines, and every unit is function-tested before it leaves the works. A MNS Low-Voltage Switch Cabinet that reaches your site carries the routine test behind it, not just the rating on the nameplate.We are one of the Top 10 Brands of China's small power distribution boxes and a drafter of national standards in this category, and we hold ISO9001, ISO14001, ISO45001, CCC, CE and TUV certification. Because we are the manufacturer rather than a trading company, our sales engineers quote from your drawing in factory-direct terms, and OEM or ODM work is produced on the same lines as our standard products.For the MNS we assemble the C-section frame and fit the drawers on our own line, so a mixed drawer schedule is a normal order rather than a special one.- OEM branding — custom colours, laser marking and your own project or retail packaging, applied at the factory.
- ODM options — ratings, configurations and internal layouts built around your drawings or single-line diagram.
- Certification — ISO9001, ISO14001, ISO45001, CCC, CE and TUV, with test documents supplied per project.
- MOQ — flexible quantities for a project or a trial order, with mixed types welcome in one shipment.
MNS cubicle row with mixed 8E/4 and 24E drawers
Withdrawable drawer in the test position with interlock engaged
MNS Low-Voltage Switch Cabinet Buying Guide from the Manufacturer
The MNS is a configuration product rather than a catalogue item, so the ordering conversation is about drawer mix and busbar rating. These are the points we confirm before drawing release.
- Confirm the system: three-phase 50–60 Hz, rated working voltage 400 V or 690 V, rated current up to 6300 A.
- List the outgoing circuits and group them by breaker frame size to fix the drawer sizes.
- Set the cubicle arrangement: incoming, bus-tie, motor control, compensation and spare capacity.
- Confirm enclosure protection (IP41 or IP40), impact class and the heat load you expect.
- Send the single-line diagram, drawer schedule and site altitude and ambient conditions.
- Approve drawings, then production, routine testing of every drawer and dispatch with test records.
Manufacturer & Sales Support for Wholesale Buyers
OEM / ODM
Learn more →Factory colours · Logo marking · Custom layout
Wholesale
Learn more →Factory pricing · Flexible MOQ · Global shipping
Distributor Support
Learn more →Account manager · Drawing support · Priority lead times
Ready to Configure an MNS Switchboard?
OEM/ODM, wholesale pricing and distributor support straight from the manufacturer — one enquiry gets you a factory-direct quotation for the MNS Low-Voltage Switch Cabinet, sized to your drawer schedule, single-line diagram and expected heat load per cubicle, with type-test documentation under IEC 60439-1 and IEC 60947. Our sales team replies with a specification and an indicative price, so send your drawings and quantity.Contact Our Sales TeamMNS Low-Voltage Switch Cabinet — Frequently Asked Questions
What is an MNS low-voltage switch cabinet?
It is a 0.4 kV low-voltage distribution cabinet built on a modular frame with withdrawable functional units, used for power distribution, centralised motor control and capacitor compensation in three-phase 50–60 Hz systems at 400 V (690 V) and below, with rated currents up to 6300 A. The MNS platform uses a 25 mm module frame with an effective height of 1800 mm.What is an MNS switchgear used for?
It handles incoming distribution, motor control and compensation duties where the outgoing circuit list is long and varied. Typical installations are power plants, petroleum and chemical plants, hospitals, railways, highways, airports, mining operations and large commercial buildings, and it is usually chosen over a fixed board where a single feeder outage would be expensive.How many circuits can one MNS cubicle hold?
Up to 36 circuits in 8E/4 drawers, up to 24 in 6E/2, up to 18 in 8E/2 or up to nine in 8E drawers. Because eight drawer specifications exist, a cubicle can also be arranged as a mix of small and large ways so the available module height is used rather than half-filled, which reduces the number of cubicles needed for the same load list.Who manufactures MNS low-voltage switchgear?
MNS is an established modular platform built by a number of manufacturers, which is why two suppliers can both quote an MNS board and still deliver very different equipment. What matters is whether the frame, drawers, adapter units and painted shell are produced by the supplier themselves, and which test records accompany the shipment. LYE manufactures the MNS frame and shell in Wenzhou and holds ISO9001, ISO14001, ISO45001, CCC, CE and TUV certification.How much does an MNS switchboard cost?
Indicative factory-direct pricing is roughly US$1,500 to US$6,000 per cubicle, depending on the drawer schedule, the busbar rating, the number of cubicles and the quantity ordered. Because the board is configured rather than catalogued, a mixed drawer schedule is priced from the bill of materials rather than a list price, and the heat load per cubicle can also affect the arrangement and therefore the cost.The MNS is a 0.4 kV low-voltage switch cabinet built on a 25 mm module C-section frame with an effective height of 1800 mm, using eight drawer sizes from 8E/4 up to 24E. It handles three-phase 50–60 Hz systems at 400 V (690 V) and below with rated currents up to 6300 A, and is used for power distribution, centralised motor control and capacitor compensation.
- Model: MNS 0.4 kV low-voltage switch cabinet
- Cabinet size: Height 2200 (+/-20%) mm, width 1000–600 mm, depth 1000–600 mm
- Structure: Assembled, withdrawable, metal type
- Place of use: Indoor
- Enclosure protection: IP41 / IP40
- Impact protection: IK10
- Maximum load: 1500 kg incoming cubicle, 1500 kg control cubicle
- Heat dissipation capacity: 2490 W incoming, 1530 W control
- Frame modulus: E = 25 mm C-section, effective height 1800 mm
- Drawer sizes: 8E/4, 6E/2, 8E/2, 6E, 8E, 12E, 16E, 24E
- Rated working voltage: 400 V (690 V) and below
- Rated current: Up to 6300 A
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Use a distribution box for final circuits and compact branch protection; use a cabinet when the project needs larger incoming capacity, more feeder groups, metering, busbars or greater internal separation. The final choice should be checked against the single-line diagram, device list, available installation space and local project rules.
Provide the device schedule, circuit quantity, component dimensions, cable-entry direction, mounting method and required spare capacity. LYE also reviews door clearance, bending radius, heat-producing devices and the usable depth behind the mounting plate before confirming an enclosure size.
Start with the actual exposure to dust, rain, cleaning water and accidental contact rather than choosing the highest number by default. Cable entries, ventilation, door seals and installation workmanship affect the finished assembly, so the target rating and verification basis must be confirmed for the specific product and project.
Coated or galvanized steel is commonly considered for general indoor service, stainless steel for humid or corrosive locations, and engineering plastic for lightweight non-metallic applications. Material grade, thickness, UV exposure, chemical contact and earthing requirements must be confirmed against the installation environment.
Share the component heat load, ambient temperature, solar exposure, duty cycle and allowable internal temperature. LYE can then review enclosure volume, spacing, ventilation or fan provisions, sun shields, heaters or drainage details; the final thermal design remains tied to the installed equipment and site conditions.
Yes. A dimensioned drawing is preferred, but a physical sample and clear reference photographs can also start the review. Material, thickness, openings, hardware, finish, labels, inspection points and packing are recorded before sampling or repeat production.
PDF and common 2D CAD drawings are suitable for most enclosure enquiries, while 3D files can help with complex assemblies. Include a revision number, units, tolerances and component references; file compatibility and any missing production information will be confirmed during review.
A sample or first article can be arranged for a new or customized product. The approval plan should identify dimensions, openings, fit, appearance, hardware, labels and packaging, together with the sample cost and timing agreed for the actual order.
Available documents may include approved drawings, packing lists, dimensional or appearance inspection records, product data and certificates applicable to the confirmed model. Destination-specific declarations or third-party testing must be requested before order placement so availability and scope can be verified.
Lead time is confirmed after the product scope, quantity, sample requirement and finish are known. Packing is reviewed against product weight, surface protection, destination and shipping method; if an issue is found after delivery, send the order reference, label, photographs and quantity affected so it can be traced and reviewed.
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