DBX-3000 Type 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) and commercial outlets (retail shops, small offices). It provides a standardized, secure, and tamper-proof housing for utility-grade electricity metering equipment.
The enclosure accommodates one single-phase meter per unit compartment, with dedicated spaces for the incoming utility service cable, the meter itself, and the outgoing consumer-side circuit breaker. The design ensures proper separation between utility-owned (metering) and consumer-owned (load-side) sections, meeting the isolation requirements of electricity supply regulations.
Technical Specifications
| Item | Specification |
|---|---|
| Rated Voltage | 220V 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 or base-mounted electronic / mechanical meter |
| Incoming Protection | Utility-side MCCB or isolator (up to 100A) |
| Outgoing Protection | Consumer-side MCB (up to 63A per circuit) |
| Number of Outgoing Circuits | 1–2 per meter (configurable) |
| Degree of Protection | IP30 / IP40 (indoor) |
| Installation Type | Indoor, wall-mounted |
| Enclosure Material | Cold-rolled steel with anti-corrosion powder coating or engineering ABS plastic |
| Door Type | Transparent metering window (for meter reading without opening) |
| Locking Mechanism | Utility-standard padlockable hasp or triangle-key lock |
| Standards | GB/T 7251, IEC 61439 |
Key Features
- Standardized Metering Enclosure: Designed specifically for single-phase 220V electricity metering applications in residential and light commercial environments — standardized dimensions and mounting configurations ensure compatibility with standard utility meter form factors and installation practices
- Tamper-Proof Design: Lockable enclosure door with utility-standard padlock hasp or triangle-key locking mechanism prevents unauthorized access to metering equipment and wiring — transparent window allows visual meter reading without opening the enclosure, maintaining the security seal integrity
- Clear Utility-Consumer Separation: Internal partition clearly separates the utility-side metering compartment (incoming cable, meter terminals, utility seals) from the consumer-side distribution compartment (outgoing MCB, load cables), ensuring compliance with electricity supply regulations requiring physical separation of utility and consumer equipment
- Transparent Meter Reading Window: High-impact transparent polycarbonate or glass window provides clear visibility of the meter display for manual or optical meter reading by utility field staff without requiring enclosure door opening — maintaining tamper-evident security
- Simplified Installation and Wiring: Pre-marked terminal positions, standardized phase/neutral/earth busbar arrangement, and clearly labeled connection points reduce installation time and minimize the risk of wiring errors by utility installation contractors
- Durable Indoor Construction: Corrosion-resistant cold-rolled steel or UV-stabilized ABS plastic enclosure provides reliable indoor service life in residential building common areas, stairwells, corridors, and utility rooms
- Ventilation and Condensation Management: Natural ventilation slots (where permitted by IP rating and security requirements) prevent internal condensation and heat buildup from meter internal power dissipation
Applications
- Residential apartment buildings — individual apartment metering
- Commercial retail outlets and small shops — tenant metering
- Residential dormitories and staff quarters — per-unit electricity billing
- Small office and mixed-use buildings — individual consumer metering
- Utility revenue metering points — single-phase service connections