3 Phase PME Consumer Unit for 3 EV Chargers – WMTP36-R40CSP
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WMTP36-R40CSP is a complete 3 phase PME consumer unit for three EV chargers. It is supplied in a 36-module IP40 steel enclosure with 3 x 40A four-pole RCBO outputs, two PME fault...
Read full descriptionPre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping.
The WMTP36-R40CSP is a complete 3 phase PME consumer unit for three EV chargers. It is supplied in a 36-module IP40 steel enclosure with 3 x 40A four-pole RCBO outputs, two PME fault detectors, a 100A main switch and Type 2 surge protection.
This model is designed specifically for installations serving three three-phase EV charge points. It combines the distribution, individual circuit protection, surge protection and open-PEN protective arrangement within one pre-wired assembly.
Installer Tip: The WMTP36-R40CSP is the three-output three-phase charger model. Choose the WMTP28-R40CSP for two three-phase chargers or the WMTP28-WER40CSP where six single-phase charging outputs are required.
Why Choose a 3 Phase PME Consumer Unit?
EV charge points connected to a PME supply require an appropriate protective measure against the consequences of an open-PEN conductor. The WMTP36-R40CSP combines PME fault detection with the protective and switching equipment required for three independently protected three-phase charger circuits.
When a qualifying abnormal supply-voltage condition is detected, the protection arrangement operates to isolate the EV charging installation. Its suitability—including whether a separate earth electrode is unnecessary—must be confirmed by the installer from the complete installation design and the applicable edition of BS 7671.
- Dedicated three-charger configuration – designed for three three-phase EV charge points
- 3 x 40A four-pole RCBO outputs – individual protection for each charger circuit
- Two PME fault detectors – monitors the three-phase supply for open-PEN fault conditions
- Type 2 surge protection – helps protect connected equipment from transient overvoltages
- 100A main switch – provides a single incoming switching point
- Pre-wired and tested in the UK – reduces on-site assembly work
Protection for Three Three-Phase EV Chargers
This page relates specifically to the WMTP36-R40CSP. Its three 40A four-pole RCBO outputs are intended to supply three three-phase chargers from a 400/415V three-phase installation.
The connected chargers must include the DC leakage protection required by the charger manufacturer and the applicable installation requirements. Device compatibility, maximum demand, diversity, load management and upstream protection must all be verified during circuit design.
Browse the wider PME Fault Detection range or view other Three-Phase Electrical Products.
Related WMTP Configurations
| Model | Output Configuration | Designed For |
|---|---|---|
| WMTP28-R40CSP | 2 x 40A four-pole RCBO outputs | Two three-phase EV chargers |
| WMTP36-R40CSP (This Product) | 3 x 40A four-pole RCBO outputs | Three three-phase EV chargers |
| WMTP28-WER40CSP | 6 x 40A two-pole RCBO outputs | Six single-phase EV chargers |
Need one assembly for three three-phase charge points? The WMTP36-R40CSP provides three dedicated charger outputs, two PME detectors and Type 2 surge protection in one pre-wired board.
How many EV chargers can the WMTP36-R40CSP supply?
This model provides three dedicated 40A four-pole RCBO outputs and is designed for three three-phase EV charge points.
What is the difference between the WMTP36-R40CSP and WMTP28-R40CSP?
The WMTP36-R40CSP supplies three three-phase chargers. The WMTP28-R40CSP provides two 40A four-pole RCBO outputs for two three-phase chargers.
Is this the model for six single-phase EV chargers?
No. For six single-phase charging outputs, see the WMTP28-WER40CSP PME Consumer Unit.
How many PME detectors are included?
The WMTP36-R40CSP includes two PME fault detectors as part of its open-PEN protective arrangement.
Is an earth rod required?
The integrated open-PEN protective measure may allow an installation to be designed without a separate earth electrode where the relevant conditions are satisfied. This must be confirmed by the installer from the earthing arrangement, complete circuit design, manufacturer instructions and applicable edition of BS 7671.
Does this unit include surge protection?
Yes. A Type 2 surge protection device is included. Its indicator displays green while serviceable and red when replacement is required.
Can the WMTP36-R40CSP be installed outdoors?
Not in an exposed location. The steel enclosure is rated IP40 and should be installed indoors in a dry, suitable environment.
What supply does this unit require?
It is designed for a 400/415V three-phase AC supply. Supply capacity, maximum demand, diversity, load management and upstream protection must be assessed for the installation.
Do the chargers need DC leakage protection?
Yes. The manufacturer identifies the WMTP arrangement for charge points incorporating the necessary DC leakage protection. Confirm every charger’s specification before installation.
How does the unit reset after a voltage fault?
Following an undervoltage condition, the protection can reset automatically once the supply returns to an acceptable range. Following an overvoltage operation, manual reset is required after the cause has been assessed.
What RCBO curve and residual-current type are fitted?
The available manufacturer information confirms three 40A four-pole RCBO outputs but does not clearly verify the curve, residual-current type or rated residual operating current for this exact SKU. Check the fitted device markings or obtain manufacturer confirmation before final specification.
| Specification | WMTP36-R40CSP |
|---|---|
| Product Type | Three-phase PME fault-detection EV consumer unit |
| Application | Three three-phase EV charge points |
| Incoming Supply | 400/415V AC, three-phase |
| Outgoing Protection | 3 x 40A four-pole RCBO outputs |
| Main Switch | 100A |
| PME Protection | 2 x integrated open-PEN fault detectors |
| Voltage Monitoring Thresholds | Below 207V or above 253V |
| Reset Behaviour | Automatic following undervoltage recovery; manual following overvoltage operation |
| Surge Protection | Type 2 SPD with green/red status indication |
| Enclosure | 36-module steel enclosure |
| Ingress Protection | IP40 – indoor use |
| Dimensions | 500mm x 530mm x 112mm |
| DIN Rail | 35mm |
| Operating Temperature | -25°C to +55°C |
| Terminal Type | Cage-clamp terminals |
| Recommended Terminal Torque | 2.5Nm |
| Relevant Standards | BS EN 61439-3 and BS 7671 |
Specification Note: The manufacturer’s currently available information confirms the output quantity, pole configuration and 40A rating but does not clearly substantiate the RCBO curve, residual-current type or rated residual operating current for this exact SKU. Confirm those device markings before final specification.
The WMTP36-R40CSP must be specified, installed, tested and commissioned by a suitably qualified electrical installer. Confirm that the complete arrangement is appropriate for the supply, earthing system, connected chargers and applicable edition of BS 7671.
Configuration Check: This model provides three 40A four-pole RCBO outputs for three three-phase EV chargers. Do not use the specifications for the two-output or six single-phase-output models when designing the installation.
- Location: Install indoors in a dry, suitably ventilated location. The steel enclosure is rated IP40 and is not intended for exposed outdoor installation.
- Supply: Confirm a suitable 400/415V three-phase supply and coordinate the 100A main switch with the upstream protective arrangement.
- EV outputs: Three dedicated 40A four-pole RCBO-protected outputs are provided for three three-phase charge points.
- Charger compatibility: Confirm that each charger provides the required integral DC leakage protection and is compatible with the selected upstream protective devices.
- Maximum demand: Assess diversity and any required load-management arrangement for the combined demand of all three chargers.
- PME assessment: Verify the open-PEN protective measure against the complete installation design before deciding that a separate earth electrode is not required.
- Surge protection: Check the Type 2 SPD status indicator during commissioning and routine inspection. Green indicates serviceable; red indicates replacement is required.
- Terminations: Use the correct conductor sizes and observe the manufacturer’s terminal requirements. The recommended terminal torque is 2.5Nm.
- Testing: Complete all required verification, RCBO testing, phase checks and functional tests before energising the charge points.
- Reset behaviour: The unit automatically resets following recovery from an undervoltage condition. An overvoltage operation requires manual reset after the supply has returned to an acceptable range and the cause has been assessed.
Always follow the product instructions, EV charger manufacturer requirements, Building Regulations and the applicable edition of BS 7671.
