DBX-3000 Type Single-Phase Electricity Meter Box
DBX-3000 type electric meter box is a terminal distribution enclosure designed for installing single-phase electric energy meters (220V), primarily used for revenue metering and power distribution in civil buildings (residential apartments, dormitories, villas) and commercial outlets (retail shops, small offices, storefronts). It provides a standardized, secure, and tamper-proof housing for utility-grade electricity metering equipment in compliance with applicable metering regulations.
The enclosure accommodates one single-phase meter per unit compartment, with dedicated, physically separated spaces for the incoming utility service cable, the metering device, and the outgoing consumer-side overcurrent protection device. This clear utility-consumer demarcation meets the isolation requirements of electricity supply regulations, ensuring that utility-owned metering equipment remains sealed and inaccessible to the consumer while allowing the consumer convenient access to their own protective device.
Technical Specifications
| Item | Specification |
|---|---|
| Rated Voltage | 220V / 230V / 240V AC (single-phase) |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current (Main Busbar) | Up to 100A |
| Meter Configuration | Single-phase, 1 meter per unit |
| Meter Type Compatibility | DIN-rail mounted (standard) or base-mounted electronic/mechanical meter |
| Incoming Protection | Utility-side MCCB or double-pole isolator (up to 100A) |
| Outgoing Protection | Consumer-side MCB (up to 63A, 1P or 1P+N) |
| Metering Compartment | Sealable with utility-standard lock or padlock hasp |
| Consumer Compartment | Accessible via separate door or cover |
| Degree of Protection | IP30 / IP40 (indoor) |
| Installation Type | Indoor, wall-mounted (surface or flush) |
| Enclosure Material | Cold-rolled steel with anti-corrosion powder coating or engineering ABS plastic |
| Meter Reading Window | High-impact transparent polycarbonate |
| Operating Temperature | -25°C to +55°C |
| Standards | GB/T 7251, IEC 61439 |
Key Features
- Purpose-Built Metering Enclosure: Designed specifically for single-phase 220V electricity metering applications in residential and light commercial environments — standardized internal dimensions and mounting points ensure compatibility with standard form-factor utility meters and common installation practices used by electricity distribution companies
- Clear Utility-Consumer Demarcation: Internal physical partition clearly separates the utility-controlled metering compartment (incoming cable, meter terminals, utility seals) from the consumer-accessible distribution compartment (outgoing MCB, load cables), ensuring full compliance with electricity supply regulations requiring physical separation between utility and consumer equipment to prevent meter tampering and unauthorized supply connection
- Tamper-Evident Sealing: The metering compartment door or cover is designed to accommodate utility-standard wire-and-seal or padlock sealing mechanisms — any attempt to access the meter terminals or incoming supply connections results in visible seal breakage, providing a clear tamper-evident indication during periodic meter reading or inspection
- Transparent Meter Reading Window: A high-impact transparent polycarbonate window is provided in the metering compartment door, allowing utility field staff to read the meter display or perform optical meter interrogation without opening the enclosure — maintaining seal integrity and reducing the risk of damage to sealing during routine reading operations
- Integrated Overcurrent Protection: A dedicated consumer-side MCB (miniature circuit breaker) is housed in the separately accessible consumer compartment, providing short-circuit and overload protection for the downstream consumer installation while remaining easily resettable by the occupant or facility manager after a fault event
- Surface or Flush Mounting: The compact enclosure design supports both surface-mounted (direct wall fixing with exposed conduit) and flush-mounted (recessed into wall cavity) installation methods, providing flexibility for different building construction types and interior design requirements
- Durable Indoor Construction: Corrosion-resistant cold-rolled steel with electrostatic powder coating or UV-stabilized ABS plastic provides reliable long-term service in indoor environments including residential stairwells, corridors, utility rooms, and meter cupboards — resistant to impact, humidity, and normal building contaminants
Applications
- Residential apartment buildings — individual apartment revenue metering
- Residential houses and villas — household electricity metering
- Commercial retail outlets and shops — tenant metering and billing
- Small office and mixed-use buildings — individual consumer metering
- Dormitories and staff quarters — per-occupant electricity billing
- Utility revenue metering points — single-phase domestic service connections