PME 12 Way Consumer Unit with Load Balancing & kWh Meter
Suitable for Solar & EV installations, the PME / PEN Fault Detection Consumer Unit with Load Balancing is a built-to-order, 12-module metal board that protects against PME faults, PEN loss, voltage fluctuations, and overloads - while actively managing power demand. Designed for EV chargers without built-in PME protection, this unit...
Suitable for Solar & EV installations, the PME / PEN Fault Detection Consumer Unit with Load Balancing is a built-to-order, 12-module metal board that protects against PME faults, PEN loss, voltage fluctuations, and overloads - while actively managing power demand. Designed for EV chargers without built-in PME protection, this unit delivers full compliance with BS 7671:2018 (18th Edition, Amendment 2) and removes the need for an earth electrode/rod.
Equipped with a load balancing monitoring relay, kilowatt-hour meter, Type 2 surge protection device, and Type A RCBO, it’s ideal for properties with high-power appliances alongside EV charging - ensuring safe operation without nuisance tripping.
- Automatic PME / PEN fault disconnection - isolates Live, Neutral & Earth within 5 seconds if voltage is outside 207–253V range
- Load balancing relay - 20A–110A adjustable sensitivity (IEC 60947-5-1 compliant)
- 40A Type A Double Pole RCBO - overload & 30mA fault current protection
- Type 2 SPD - shields against damaging voltage spikes
- Kilowatt-hour meter - track EV charging energy usage
- IP40 metal enclosure - 12-module capacity with built-in contactor
- No earth rod required
Do I still need an earth rod with this unit?
No - the integrated PME/PEN fault detection meets 18th Edition requirements without a separate earth electrode.
Can this unit protect multiple high-demand appliances?
Yes - the load balancing relay automatically limits EV charger output when other high-load devices are in use.
Is this suitable for commercial installs?
Yes - it’s designed for residential, commercial, and light industrial EV charger installations.
- Modules: 12
- Current Rating: 40A (RCBO option) or 100A (main switch option)
- RCBO Type: Type A, Double Pole, C Curve
- Load Balancing Range: 20A–110A adjustable
- Voltage Monitoring: Under-voltage <207V, Over-voltage >253V
- Isolation Time: ≤5 seconds
- Reset Function: Auto-reset (under-voltage), manual reset (over-voltage)
- SPD: Type 2
- Meter: Kilowatt-hour
- Enclosure Rating: IP40
- Standards: BS 7671:2018 A2, IEC 60947-5-1
This PME/PEN fault detection unit must be installed by a qualified electrician. Ensure correct connection of the load balancing relay’s current transformer around the main incoming cable to enable overload protection and power management.
- Mount within a dry, ventilated location
- Follow wiring diagram included in datasheet
- Allow space for cable dressing and future servicing
- Test PME disconnection before commissioning
