Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board
5 Way EV Consumer Unit with B40 Type A RCBO and 40kA Type 2 SPD
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board is a pre-populated, weather-resistant consumer unit designed for electric vehicle charging installations. Featuring a 40A B-curve bi-directional Type A RCBO, 30mA residual current protection and a 40kA Type 2 surge protection device, this five-way distribution board provides essential circuit protection in a robust aluminium enclosure.
Manufactured by Niglon, the EV40AXSP-5WA is supplied with its protective devices, busbar and internal connecting cables already fitted, reducing assembly work for electricians installing dedicated EV charging circuits.
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board features a dark grey aluminium housing with a lockable door, making it suitable for appropriately designed indoor and outdoor EV charging installations, including residential driveways, garages and commercial parking areas.
Key Features and Installer Benefits
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board combines circuit protection, surge protection and a durable enclosure within one convenient pre-assembled unit.
- 5-way EV charger distribution board.
- Pre-installed 40A B-curve bi-directional RCBO.
- 30mA Type A residual current protection.
- 40kA Type 2 surge protection device included.
- Pre-fitted busbar and internal connecting cables.
- Durable dark grey aluminium enclosure.
- IP65 ingress protection for suitable outdoor installations.
- Lockable front door for additional security.
- 20mm cable entry knockouts with selected positions drillable to 32mm.
- 240V AC rated RCBO.
- Compact arrangement for dedicated EV charging circuits.
- Intertek and Semko certification.
- Designed to relevant EN 61009-1, EN 61643-11 and EN 61439-3 standards.
40A B-Curve Type A RCBO – Protection for EV Charging Circuits
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board incorporates a factory-installed 40A, 30mA Type A RCBO with a B-curve tripping characteristic.
The RCBO combines residual current protection with overload and short-circuit protection, providing protection for a dedicated EV charging circuit when correctly specified and installed.
Its B-curve characteristic is commonly used for circuits with relatively low starting currents. Compared with a C-curve device of the same rating, a B-curve RCBO operates at a lower instantaneous magnetic trip current, making it appropriate for installations where the circuit characteristics and required disconnection conditions support its use.
The Type A residual current function detects alternating residual currents and pulsating DC residual currents. For EV charging installations, suitable protection against smooth DC residual currents must also be provided according to the charging equipment and applicable BS 7671 requirements.
The fitted RCBO is bi-directional, meaning its protective design accommodates power flow in either direction. This may be relevant to installations involving compatible vehicle-to-home or vehicle-to-grid equipment, although overall bi-directional charging suitability depends on the complete charging system and installation design.
40kA Type 2 Surge Protection Included
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board includes a factory-fitted Type 2 surge protection device rated at 40kA maximum discharge current.
Type 2 surge protection helps limit transient overvoltages caused by electrical switching operations and indirect lightning-related events. These transient disturbances can potentially damage sensitive electronic components within EV chargers and associated electrical equipment.
With the SPD already installed, electricians do not need to source a separate surge protection device for the distribution board.
The pre-fitted arrangement also reduces additional internal wiring work, although the installer must still verify correct earthing, connection requirements and protective coordination in accordance with the manufacturer’s instructions.
IP65 Aluminium Enclosure for Outdoor EV Charging
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board features a durable aluminium enclosure finished in dark grey, providing a robust housing for the internal protective devices.
Its IP65 rating indicates protection against dust ingress and water jets when the enclosure is correctly installed and sealed. This makes it suitable for appropriately designed outdoor charging installations where electrical equipment may be exposed to rain and general weather conditions.
The aluminium construction offers a sturdy alternative to plastic EV consumer unit enclosures, while the lockable door helps restrict casual access to the internal protective devices.
Typical mounting locations include:
- External walls near domestic EV chargers.
- Residential garages and parking areas.
- Suitable commercial EV charging locations.
- Covered parking spaces.
- Indoor electrical distribution areas serving EV charging equipment.
For external installations, Niglon recommends an appropriately IP-rated anti-condensation cable gland. Installers should also consider enclosure orientation, cable entry positions, moisture management and the manufacturer’s installation instructions.
Flexible Cable Entry and Lockable Door
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board incorporates multiple cable entry positions to help electricians route incoming supply cables and outgoing EV charger circuits.
The manufacturer’s specified knockout arrangement includes:
- Top: 2 × 20mm knockouts.
- Bottom: 2 × 20mm knockouts.
- Sides: 2 × 20mm knockouts.
- Rear: 1 × cable entry knockout.
- Selected 20mm knockout positions are drillable to 32mm.
This arrangement provides installation flexibility where supply cables may enter from above, below, the side or through the rear of the enclosure.
Appropriate cable glands and sealing arrangements must be used to maintain the required ingress protection rating.
Pre-Wired Distribution Board for Efficient Installation
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board is supplied with a factory-fitted RCBO, Type 2 SPD, busbar and connecting cables.
This pre-assembled configuration reduces the amount of internal assembly required compared with installing individual protective devices inside an empty enclosure.
For professional EV charger installers, the arrangement provides a convenient starting point for dedicated EV circuit installations, with the protective devices already selected and fitted by the manufacturer.
The electrician remains responsible for confirming cable sizing, supply characteristics, protective device suitability, fault levels, earthing and the correct installation of the charging equipment.
EV Chargers with Integrated PEN Fault Protection
The Niglon EV40AXSP-5WA IP65 Metal EV Distribution Board can form part of an EV charging installation where the charging equipment provides suitable open PEN conductor protection or the installation incorporates another compliant protective arrangement.
Some EV charge points include integrated open PEN fault protection, which can remove the need for a separate external PEN fault detection device in certain installations.
However, compatibility must always be confirmed against the particular charger’s installation manual and the supply earthing arrangement.
The EV40AXSP-5WA should not be assumed to incorporate open PEN conductor protection, as this function is not identified in the manufacturer’s specification.</
