LYB4 PZ30 Metal Distribution Box
The LYB4, also known as the PZ30 series, is a fully metal distribution box manufactured by LYE Technology for residential and commercial buildings. A painted cold-rolled steel cover and matching steel enclosure carry 8 to 60 ways in standard and M-type depth variants, with a 1.0 mm DIN rail and steel panel supplied as standard.
- Construction: Fully metal, painted cold-rolled steel cover and enclosure
- Way range: 8 to 60 ways, one to three rows
- Depth variants: Standard version and M type
- Enclosure thickness: 0.8 mm / 1.0 mm / 1.2 mm
- Standard configuration: Steel panel, neutral and earth busbar set, 1.0 mm DIN rail
PZ30 Metal Distribution Box: Key Features & Typical Use
Fully Metal Construction
Both the cover and the enclosure of the LYB4 are painted cold-rolled steel, so the box is metal inside and out. For installations where a plastic front is not acceptable — industrial units, workshops, service areas and some specification-driven residential projects — that removes a material objection without sacrificing the modular layout.PZ30 Modular Compatibility
The LYB4 follows the PZ30 modular dimensions that rail-mounted terminal devices are built around, so breakers, residual current devices and modular accessories fit the way they were designed to fit. This standardisation is why the format has been used for decades in residential and commercial distribution work.8 to 60 Ways Across Three Row Layouts
Capacity runs from a compact 8-way single-row box up to a 60-way three-row unit, covering a small apartment through to a commercial floor. Standard models run from LYB4-8 at 265 x 241 x 105 mm to LYB4-60 at 481 x 681 x 105 mm overall, and M-type models add a shallow variant for different wall construction.Standard Kit Ready to Fit
Each box ships with the steel panel, the neutral and earth busbar set and a 1.0 mm DIN rail, so the installer is not assembling a kit of loose parts on site. Enclosure thickness is selectable at 0.8 mm, 1.0 mm or 1.2 mm to suit the project budget and how much handling the box will receive.PZ30 Metal Distribution Box Specifications & Technical Data
| Parameter | Details |
|---|---|
| Series | LYB4 (PZ30) metal enclosure distribution box |
| Cover | Painted cold-rolled steel plate |
| Enclosure | Painted cold-rolled steel plate |
| Construction | Fully metallic, modular PZ30 dimensions |
| Way range | 8 to 60 ways |
| Row configurations | 1 row, 2 rows, 3 rows |
| Depth variants | Standard version and M type |
| Enclosure thickness options | 0.8 mm / 1.0 mm / 1.2 mm |
| Standard configuration | Steel panel, neutral and earth busbar set, 1.0 mm DIN rail |
| Example standard model | LYB4-8: 265 x 241 x 105 mm overall |
| Mid-range model | LYB4-18: 445 x 241 x 105 mm overall |
| Largest standard model | LYB4-60: 481 x 681 x 105 mm overall |
| Example M type model | LYB4-18M: 445 x 241 x 109 mm overall |
| Device compatibility | Standardised PZ30 rail-mounted terminal devices |
| Application | Residential and commercial distribution systems |
LYB4 PZ30 — a Fully Metal Modular Distribution Box
Some specifications do not allow a plastic front, whatever the appearance benefits. The LYB4, known as the PZ30 series, answers that with a fully metal construction: a painted cold-rolled steel cover on a matching steel enclosure, with the modular internals that rail-mounted terminal devices are designed around.In specifications this format is called a PZ30 distribution box, a metal consumer unit or a modular terminal distribution board, and it is compared with plastic-fronted boards and with larger wall-mounted cabinets. Because some specifications do not accept a plastic front, the useful question when comparing manufacturers is whether the cover is genuinely steel and whether the box follows the standardised PZ30 modular dimensions that rail-mounted devices are built around.Capacity runs from 8 ways in a single row up to 60 ways in three rows, from the LYB4-8 at 265 x 241 x 105 mm to the LYB4-60 at 481 x 681 x 105 mm overall. Standard and M-type depth variants allow the same electrical layout to be used where wall construction or cavity depth differs between floors of the same building.Each box is supplied with the steel panel, the neutral and earth busbar set and a 1.0 mm DIN rail already in place, and enclosure thickness can be specified at 0.8 mm, 1.0 mm or 1.2 mm. The format is used widely in residential and commercial distribution work where a proven, fully enclosed metal board is preferred.
Factory-Direct PZ30 Metal Distribution Box 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 LYB4 PZ30 Metal Distribution Box 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 LYB4 we press and coat the steel cover and enclosure in-house, so a specific way count or a non-standard depth is a production detail rather than an imported special.- 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.
LYB4 PZ30 steel cover on a modular enclosure
Busbar set and 1.0 mm DIN rail supplied as standard
PZ30 Metal Distribution Box Buying Guide from the Manufacturer
The LYB4 is chosen when the cover must be metal, so the order is settled by way count and depth. These are the points we confirm.
- Count the outgoing circuits and spare ways to fix the way count and number of rows.
- Confirm whether the standard depth or the M type variant suits the wall construction.
- Confirm the enclosure thickness required, 0.8 mm, 1.0 mm or 1.2 mm.
- Confirm the breaker and RCD types to be fitted so the rail length is correct.
- Send the circuit schedule, floor plan and wall detail for each position.
- Approve the drawing, then production and dispatch with the agreed documentation.
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
Need a Fully Metal Distribution Board?
OEM/ODM, wholesale pricing and distributor support straight from the manufacturer — one enquiry gets you a factory-direct quotation for the LYB4 PZ30 Metal Distribution Box, sized to your way counts, the wall construction at each position and the breaker types you intend to fit, with type-test documentation under IEC 60670 and the applicable national requirements for distribution boards. Our sales team replies with a specification and an indicative price, so send your drawings and quantity.Contact Our Sales TeamPZ30 Metal Distribution Box — Frequently Asked Questions
What is a PZ30 distribution box?
PZ30 is the standardised modular format for a terminal distribution box, built around rail-mounted devices and widely used in residential and commercial buildings. The LYB4 follows that format with a painted cold-rolled steel cover and matching steel enclosure, covering 8 to 60 ways in standard and M-type depth variants with a 1.0 mm DIN rail and busbar set as standard.What is a PZ30 box used for?
It is used as a household or light commercial distribution board where a fully metal enclosure is required or preferred: workshops, industrial units, service areas, plant rooms and specification-driven residential projects. It takes miniature circuit breakers, residual current devices and modular accessories, and the 8 to 60 way range covers a small sub-circuit board up to a full commercial floor panel.What is the difference between a PZ30 box and a consumer unit?
Both are modular boards for rail-mounted devices, but a PZ30 board is a general-purpose format used across residential, commercial and light industrial work, often with an all-metal construction. A consumer unit is the standardised domestic board for a single-phase dwelling supply, frequently with a plastic front. The LYB4 is specified where the metal construction and the wider way range matter.Who manufactures PZ30 distribution boxes?
This is one of the highest-volume enclosure categories, produced by many factories, so the differences are in material and dimensional accuracy rather than in the basic design. Ask whether the steel cover and enclosure are pressed and coated on the supplier's own lines, whether the modular dimensions follow the PZ30 standard, and whether the busbar set and rail are included. LYE manufactures the LYB4 in Wenzhou and holds ISO9001, ISO14001, ISO45001, CCC, CE and TUV certification.How much does a PZ30 distribution box cost?
Indicative factory-direct pricing is roughly US$5 to US$80 per unit, depending on the way count, the depth variant, the steel thickness and the quantity ordered. Because the product is bought in large volumes for developments, the price per way falls quickly with batch size, and the fully assembled cost including breakers is usually the more useful comparison for a project.
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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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