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Distribution Box | PZ40 Metering & Distribution Box (Electricity Meter Box with Distribution Compartment)

Distribution Box | PZ40 Metering and Distribution Box is an indoor AC 220/380 V low voltage distribution box designed for terminal lighting, socket and small-power distribution in residential, commercial, industrial and public buildings. It is a combined metering and distribution box with a separate upper compartment for one or more single-phase or three-phase electricity meters and a lower compartment for the incoming switch and outgoing miniature circuit breakers. The enclosure is folded from cold-rolled steel sheet for surface or flush wall mounting. The metering compartment has its own lockable door with a transparent viewing window so the utility can read and seal the meter without access to the distribution section; the distribution compartment holds the main isolating switch or MCB, outgoing miniature circuit breakers, residual current devices and, for three-phase metering, the current transformers. Single-user and multi-user (2 to 12 meters) layouts are available. YAOGU supplies it together with the XL-21, GGD and GCS low-voltage switchgear and the KYN28A-12, XGN and HXGN high-voltage switchgear as a complete power distribution solution.

Industry Approvals：
GB 7251.3
IEC 61439-3


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Model:
PZ40

Parameter	Distribution Box
Common Models	PZ40
Construction	Cold-rolled steel sheet enclosure for surface or flush wall mounting, divided into a sealed metering compartment with transparent window door and a separate distribution compartment with lockable door; knockouts for cable entry at top and bottom. Metering compartment: meter mounting plate for single-phase or three-phase electricity meters, optional current transformers and test terminal block. Distribution compartment: main isolating switch or MCB, outgoing miniature circuit breakers, residual current devices, surge protective device, neutral and earth terminal bars.
Core Function & Performance	Meters the energy consumed by each user at the incoming point of a floor, unit or small building and then distributes the 220/380 V supply to the downstream circuits through miniature circuit breakers; the sealed metering compartment separates the utility-controlled meter from the user-controlled distribution section.
Technical Specs & Ratings	• Rated Voltage: AC 220 / 380 V (main circuit) • Standards: GB 7251.3, IEC 61439-3 • Main components: Electricity meter mounting plate, current transformers (three-phase metering), main isolating switch or MCB, miniature circuit breakers, residual current devices, surge protective device, neutral and earth terminal bars • Rated current, number of meters and circuits, CT ratio for three-phase metering, protection degree and dimensions: configured according to project requirements, please contact us.
Typical Application Scenarios	Energy metering and distribution at floor or unit incoming points of residential buildings, apartments, shops, small offices, rural houses, farms and small workshops where one or several users are metered individually.

*Data provided on this page is subject to change based on different manufacturers' variances.

Customization Service

We provide flexible customization services, including number and type of meters (single-phase or three-phase, direct or CT-connected), surface or flush mounting, circuit configuration, device brand, meter window and sealing arrangement, enclosure color. Custom marking options include nameplates, logos and project-specific identification to meet traceability and branding requirements.

Q	What is the PZ40 distribution box?
A	PZ40 Metering and Distribution Box is an indoor AC 220/380 V low voltage distribution box. It is a combined metering and distribution box with a separate upper compartment for one or more single-phase or three-phase electricity meters and a lower compartment for the incoming switch and outgoing miniature circuit breakers. The enclosure is folded from cold-rolled steel sheet for surface or flush wall mounting. The metering compartment has its own lockable door with a transparent viewing window so the utility can read and seal the meter without access to the distribution section; the distribution compartment holds the main isolating switch or MCB, outgoing miniature circuit breakers, residual current devices and, for three-phase metering, the current transformers. Single-user and multi-user (2 to 12 meters) layouts are available.
Q	Which standards does this distribution box comply with?
A	The box is designed and tested to GB 7251.3 (low-voltage switchgear and controlgear assemblies - distribution boards intended to be operated by ordinary persons) and the corresponding IEC 61439-3. Component brands and ratings are selected to the project specification.
Q	What is the difference between PZ30, PZ40 and XM distribution boxes?
A	PZ30 is the modular lighting distribution box built around 18 mm DIN-rail devices behind a cut-out cover plate, suitable for apartments and offices. PZ40 is the metering and distribution box with a separate metering compartment for one or more electricity meters above the distribution section, used at the floor or unit incoming point. XM is the general-purpose lighting distribution box with a plain steel enclosure in which both modular devices and conventional moulded-case circuit breakers can be installed on a mounting plate, suitable for workshops, buildings and public facilities.
Q	Is the electricity meter included?
A	The box is normally supplied with the meter mounting plate, terminal block and wiring prepared for the specified meter type; the meter itself is usually provided and sealed by the local utility. If required we can also supply single-phase or three-phase electronic meters and current transformers together with the box. Please tell us the meter type and connection method when requesting a quotation.
Q	Which circuit breaker brands can be used?
A	Domestic brands are standard; international brands such as Schneider, ABB or Siemens can be fitted on request. Please specify the preferred brand and rating when requesting a quotation.
Q	Where is this distribution box typically used?
A	Energy metering and distribution at floor or unit incoming points of residential buildings, apartments, shops, small offices, rural houses, farms and small workshops where one or several users are metered individually.
Q	What information do you need for a quotation?
A	Please provide the circuit list or single-line diagram, rated current, number of circuits (and meters if any), surface or flush mounting, preferred device brand, installation environment and quantity. We will confirm the configuration and quote accordingly.
Q	Do you supply complementary products?
A	Yes. In addition to high and low voltage switchgear, we supply power cables, cable accessories, electric power fittings and transformers for complete project packages.