IP65 Plastic Pen Fault Detection Unit with Load Balancing Relay
The IP65 PEN Fault Detection Unit with Load Balancing Relay is a site-ready solution for EV charge point installs where PEN fault protection is mandatory. Designed to comply with 18th Edition Amendment 2, this weatherproof board safely isolates Live, Neutral, and Earth conductors in the event of a PEN fault...
The IP65 PEN Fault Detection Unit with Load Balancing Relay is a site-ready solution for EV charge point installs where PEN fault protection is mandatory. Designed to comply with 18th Edition Amendment 2, this weatherproof board safely isolates Live, Neutral, and Earth conductors in the event of a PEN fault = without the need for an earth rod.
Built for residential and commercial installs, this board includes an adjustable load monitoring relay to support installations where multiple high-demand appliances could trip supply limits. Ideal for EV installs needing both protection and load balancing in one enclosed unit.
- PEN fault detection: Monitors and isolates all conductors under fault conditions
- Load balancing relay: Adjustable from 20A to 110A for intelligent current control
- IP65 rated: Fully weatherproof for outdoor EV installs
- Type A RCBO option: Provides overload and 30mA earth leakage protection
- No earth rod needed: Complies with BS7671 PEN protection regulations
- Built-in contactor: Integrated switching mechanism for auto disconnection
Supplied fully pre-wired and available with either a 40A A-Type RCBO or a 100A main switch.
Does this unit meet Amendment 2 PEN fault rules?
Yes — this device monitors and disconnects all conductors in line with BS7671 Amendment 2 requirements for EV installs.
Do I still need to install an earth rod?
No — this unit removes the need for an earth electrode by disconnecting the Earth conductor automatically under fault conditions.
Can I use this with any EV charger?
Yes, it’s compatible with all major brands of single-phase EV charge points where PEN protection is not built-in.
What’s the difference between the RCBO and Main Switch variants?
Choose the RCBO version for built-in overload and earth leakage protection. Opt for the 100A main switch version if using separate protection downstream.
- Enclosure: IP65-rated plastic, outdoor rated
- Load Relay: Sensitivity adjustable 20A–110A (IEC60947-5-1 compliant)
- Protection Device: 40A Type A RCBO (or 100A main switch variant)
- Contactor: Integrated for automatic pole disconnection
- Voltage Monitoring: Continuous – triggers isolation under fault
- Compliant With: BS7671 18th Edition, Amendment 2
- Module Width: 12 modules
Final install must be carried out by a qualified electrician. Unit is supplied pre-wired to reduce on-site fitting time.
- Markings and relay controls clearly labelled for ease of setup
- Rear knockouts for flexible cable routing
- Install within a ventilated area if enclosed
- Ensure correct PEN relay test on commissioning
