PME Consumer Unit – 40A Type A RCBO with Load Management (WMEPME10/LB)

The WMEPME10/LB combines PME fault detection, a 40A Type A RCBO and load management in a metal consumer unit. It is intended for EV charging installations where the demand on the incoming supply also needs to be monitored.

Load monitoring uses a current transformer on the incoming supply. This helps the control arrangement account for other large electrical loads, such as electric showers or heating. The current-transformer selection, relay settings and control wiring must be matched to the installation.

Key features

• RCBO: 40A Type A, C Curve
• Load management: incoming-supply current monitoring with relay control
• PME protection: monitors the supply and disconnects live, neutral and earth under the stated fault conditions
• Enclosure: IP40 metal, 12-module capacity
• Dimensions (W × H × D): 232 × 240 × 112mm

Please contact Power & Data UK to confirm SPD fitment, the supplied current transformer and the detailed control arrangement before ordering.

Images are representative of the PME range and may show a different current rating or component arrangement.

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Select by the required protection, metering and load-management functions. Confirm the fitted component specifications for your installation.

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• Model: WMEPME10/LB
• RCBO: 40A Type A
• Trip curve: C
• Rated voltage: 230V AC
• Frequency: 50/60Hz
• Supply monitoring: 230V and 240V AC
• PME voltage monitoring limits: below 207V or above 253V
• PME disconnection: live, neutral and earth within 5 seconds under the stated fault conditions
• Reset: automatic following under-voltage when normal supply returns; manual intervention following over-voltage, according to the supplied instructions
• Enclosure: metal, IP40
• Enclosure module capacity: 12
• Dimensions (W × H × D): 232 × 240 × 112mm
• Assembly short-circuit rating: 16kA; this does not specify the individual RCBO's breaking capacity
• Ambient temperature: -25°C to +55°C
• Storage temperature: -35°C to +55°C
• Assembly standard listed by WCED: BS EN 61439-3
• Load monitoring: current transformer on the incoming supply
• Load-management setting range: 10–110A as listed by WCED; this is the monitoring/control range, not the 40A circuit rating

Confirm the current transformer rating, RCBO pole arrangement/sensitivity and individual breaking capacity, SPD fitment and control settings with the supplied assembly instructions or contact Power & Data UK.

Installation and commissioning must be carried out by a qualified electrician. Use the instructions supplied with the exact assembly and the charge point, together with the applicable BS 7671 requirements.

• Confirm the charge point's requirements for residual-current, DC leakage, overcurrent and PEN fault protection.
• Select cable sizes and protective-device settings for the load and installation conditions.
• Follow the wiring diagram, terminal identification and tightening torques supplied with the exact assembly.
• Test the protection and PME disconnection/reset functions using the manufacturer's commissioning procedure.
• Mount in an appropriate indoor location consistent with the IP40 rating.
• Confirm the supplied current transformer and its rating, then fit and connect it exactly as instructed by WCED.
• Set the monitoring threshold and timing for the supply and connected equipment; the relay setting range does not increase the board's 40A rating.
• Confirm the charge point has the DC leakage protection required by the instructions.
• Check the load-management operation during commissioning, using the supplied procedure.
• Confirm SPD fitment and coordination where required.

Does load balancing mean it shares charging power between multiple chargers?

The datasheet describes incoming-supply current monitoring and relay-based load management. It does not establish coordinated power sharing between multiple charge points. Confirm the required control arrangement for a multi-charger design.

Is the board rated up to 110A?

No. The board is specified with a 40A RCBO. The 10–110A figure is the manufacturer-listed load-management setting range; settings must suit the supplied current transformer and the installation.

Is an SPD or kWh meter included?

Please contact Power & Data UK to confirm the supplied equipment. The matched datasheet establishes a 40A Type A RCBO and load management but does not explicitly specify an SPD or energy meter.

Does it have ten spare circuits?

The matched datasheet lists a 12-module enclosure. This is enclosure capacity, not the number of spare outgoing circuits.

Does this unit guarantee a compliant EV installation?

Suitability depends on the charge point, earthing arrangement and circuit design. A qualified electrician must select and commission the complete installation using the supplied instructions and the applicable BS 7671 requirements.