DBX-4000 Type Single-Phase Electricity Meter Box
DBX-4000 type electric meter box is a terminal distribution enclosure designed for installing single-phase electric energy meters (220V). The DBX-4000 series is available in two installation configurations: surface-mounted (exposed/light) and flush-mounted (concealed/dark), accommodating different building construction types and aesthetic requirements. All internal electrical switch components utilize standard 9mm modular switches (DIN rail mounted miniature circuit breakers), ensuring compatibility with widely available modular electrical accessories. It is mainly used for revenue metering and power distribution in civil buildings (residential apartments, dormitories) and commercial outlets (retail shops, small offices).
Technical Specifications
| Item | Specification |
|---|---|
| Rated Voltage | 220V / 230V AC (single-phase) |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current (Main Busbar) | Up to 100A |
| Meter Configuration | Single-phase, 1 meter per unit |
| Switch Compatibility | 9mm modular DIN-rail mounted devices (MCB, RCCB, RCBO) |
| Incoming Protection | Utility-side isolating switch or MCCB (up to 100A) |
| Outgoing Protection | Consumer-side MCB (up to 63A, 1P or 1P+N) |
| Installation Type | Surface-mounted (exposed) / Flush-mounted (concealed) |
| Degree of Protection | IP30 / IP40 (indoor) |
| Enclosure Material | Cold-rolled steel with anti-corrosion powder coating or engineering ABS plastic |
| Meter Reading Window | Transparent polycarbonate panel |
| Locking Mechanism | Padlockable hasp or utility triangle-key lock |
| Standards | GB/T 7251, IEC 61439 |
Key Features
- Dual Installation Configuration: Available in both surface-mounted (exposed, for retrofit or surface conduit installations) and flush-mounted (concealed, recessed into wall cavity) configurations — providing installation flexibility for different building construction types, wall materials, and architectural finish requirements
- Standard 9mm Modular Switch Compatibility: All internal overcurrent protective devices and switching components utilize standard 9mm modular DIN-rail mounted format (MCBs, RCCBs, RCBOs), ensuring compatibility with widely available modular electrical accessories from multiple manufacturers for easy replacement and future modification
- Secure Revenue Metering Enclosure: Dedicated, sealable metering compartment with utility-standard lock or padlock hasp prevents unauthorized access to the meter and incoming supply terminals — the transparent metering window allows visual reading without opening the enclosure, maintaining seal integrity
- Clear Utility-Consumer Separation: Internal physical partition separates the utility-controlled metering compartment from the consumer-accessible distribution section, ensuring compliance with electricity supply regulations requiring physical separation between utility-owned metering equipment and consumer-owned protective devices
- Compact Space-Saving Design: The slim profile of the DBX-4000 minimizes projection from the wall surface in surface-mounted installations and requires minimal wall cavity depth in flush-mounted installations — ideal for space-constrained installation locations in building corridors, stairwells, and utility cupboards
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 buildings — individual consumer metering
- Dormitories and staff quarters — per-occupant electricity billing
- Utility revenue metering points — single-phase domestic service connections