IP65 PME Consumer Unit with Load Balancing (WPEPME12/LB)
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping.The WPEPME12/LB is an IP65 PME consumer unit with load balancing for a single-phase EV charging circuit. It combines a 40A C Curve Type A RCBO, PME fault monitoring and an adjustable load-management relay...
Read full descriptionPre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping.
The WPEPME12/LB is an IP65 PME consumer unit with load balancing for a single-phase EV charging circuit. It combines a 40A C Curve Type A RCBO, PME fault monitoring and an adjustable load-management relay in a weather-resistant plastic enclosure.
This model is designed for EV installations where the charger load needs to be managed against the available incoming supply. Unlike WMEPME12/LB, this SKU is not identified in Whitecliffe’s current product table as including a kWh meter.
Installer Tip: This is the IP65 load-balancing version without an integral kWh meter. For steel IP40 construction with metering, compare the WMEPME12/LB.
Key Features
- 40A C Curve Type A RCBO – overcurrent and Type A residual-current protection
- Adjustable load management – 10A to 110A setting range via CT monitoring
- PME fault monitoring – linked disconnection of line, neutral and protective conductor
- IP65 plastic enclosure – suitable for appropriately located indoor or outdoor installations
- Pre-wired and tested before dispatch
- No integral kWh meter stated for this exact LB model
How the Load Management Works
The load-management relay uses a current transformer to monitor demand at the incoming supply. The installer sets a suitable threshold for the installation, allowing the EV charging circuit to be controlled when total demand approaches that limit.
This feature supports supply-demand management; it does not increase the capacity of the incoming supply or replace the required circuit design, protective coordination and commissioning checks.
PME Fault Monitoring
The assembly monitors the supply against the manufacturer’s stated under-voltage and over-voltage thresholds. When a qualifying abnormal condition is detected, its linked switching arrangement disconnects line, neutral and the protective conductor. Under-voltage recovery is automatic, while over-voltage operation requires manual reset.
Compare PME Load-Balancing Units
| Model | Enclosure | Circuit Protection | Additional Functions |
|---|---|---|---|
| WMEPME12/LB | IP40 steel | 40A C Curve Type A RCBO | Load balancing + kWh meter |
| WPEPME12/LB (This Product) | IP65 plastic | 40A C Curve Type A RCBO | Load balancing |
What does the load-management relay do?
It monitors the incoming supply through a CT and allows the EV charging load to be controlled when site demand approaches the installer-set threshold.
Does WPEPME12/LB include a kWh meter?
Whitecliffe’s current product table identifies this exact LB model as a 40A C Curve load-balancing unit but does not state that a kWh meter is included.
Does the RCBO provide 6mA DC detection?
Do not assume so. It is identified as a Type A RCBO; any DC residual-current protection required by the charger must be confirmed separately.
Can this avoid a separate earth electrode?
The PME monitoring arrangement is designed for EV charging installations using automatic disconnection. Suitability must be confirmed for the particular installation and current BS 7671 requirements.
Can it be installed outdoors?
The enclosure is rated IP65, provided the mounting method and cable entries preserve that rating.
- Model: WPEPME12/LB
- Application: Single-phase EV charging circuit
- Rated current: 40A
- Rated voltage: 230V AC, 50/60Hz
- Circuit protection: 40A C Curve Type A RCBO
- Load-management range: 10A to 110A
- Metering: No integral kWh meter stated for this SKU
- PME monitoring thresholds: below 207V and above 253V
- Conditional short-circuit rating: 16kA
- Enclosure: IP65 polycarbonate/ABS
- Dimensions: 295mm × 255mm × 140mm
- Assembly standard: BS EN 61439-3
- Installation: To the current edition of BS 7671 and manufacturer instructions
The WPEPME12/LB is supplied pre-wired and tested. Installation and commissioning must be completed by a suitably qualified person.
- Fit the supplied CT in the orientation and position shown in the manufacturer’s instructions.
- Set the load-management threshold from the measured maximum demand and available supply capacity.
- Confirm the charger’s AC and DC residual-current requirements; do not assume the Type A RCBO provides all protection required by every charger.
- Ensure the mounting position and cable entries preserve the required IP rating.
- Verify PME switching, load-management response and reset behaviour during commissioning.
