The NH Type 640 Cabinet is designed by Ritherdon to fulfil the specifications required by National Highways for the mounting of motorway communication and third-party equipment on the Strategic Road Network.

The NH640 is supplied in two variants: Rural & Gantry, with the option to add Adaption Kits for the different PDU configurations.

The NH640 features separate compartments for the Equipment Bay and the PDU.

The NH640 is designed, manufactured, and tested according to the National Highways TR 2637 B specification document

National Highways Product Acceptance Certificate No. PAC/011/1/2021/03/23

The NH640 fits the Extended 610 plinth (not supplied), or the NH640 Pedestals (optional). Please add these to cart separately.

PDU option available:

Rural PDU – NH Type 640 Rural Power Cabinet: CABINET-0850-1-000
Gantry PDU – NH Type 640 Gantry Power Cabinet: CABINET-0851-1-000

Adaption Kits available for each PDU option.

Please add these to cart separately.

National Highways enclosures are supplied without keys as standard. Please contact your Scheme Designer for further information and supply details.

Click here to see a table with dimensions of all our cabinet and feeder pillar products.

Product Documentation

Data Sheet

Technical Drawings:

NH640 Cabinet
Rural PDU Option
Gantry PDU Option

Instructions:

Lifting, Installation & Maintenance
Chamber Pedestal Scenario 1

Chamber Pedestal Scenario 2

Adaption Kits – Instructions:

Rural & Gantry:

Gantry:

Additional Message Sign (2nd VMS)

Speed Enforcement

ADS Lighting

Standard Material, Colour, and Lock:

4003 Grade: Suitable for inland locations
TR2180 BS4800 00-A-09 ‘Flint Grey’
Concentric Cam-Lock with three-point locking system operated by an NH-Supplied T-key on each door. Keys not supplied.

National Highways enclosures are supplied without keys as standard. Please contact your Scheme Designer for further information and supply details.

Product Data

Product Code

Product Dimensions
(h x w x d, mm)

Rack Separation
(mm)

Rack Space

(mm)

Main Cable Opening

(mm)

PDU Cable Opening
(mm)

NH640

1589 x 900 x 620

300

31U

540 x 500

496 x 138

Product Features

IP56 Rating – The NH640 is protected against dust ingress and powerful water jets according to BS EN 60529:1992 + A2:2013.
Two compartments – One containing the equipment bay, rack, and wiring, the other containing the Power Distribution Unit and electrical terminations.
2 x 19” Racks 31U – One behind the other for the double-mounting of equipment up to 50kg.
Lifting Lugs – All units are supplied with detachable lifting lugs with a maximum load of 876kg.
Lacing Rail Mountings – For the attachment/mounting of lacing frames
Horizontal Termination Rails x6 – 4 in the Equipment Bay and two in the PDU Bay for the termination and earthing of SWA cables.
TSP Socket Strip x1 – BS 1363 6-way 13 A socket strips
Rack Power Cables x8 – 3-core 0.75 mm2 flexible cords fitted with ICE 60320 C13 cable sockets located in the Equipment Bay.
Secure Locking System – Three-point locking system on each door operated using an National Highways supplied T-key. Keys not included. National Highways enclosures are supplied without keys as standard. Please contact your Scheme Designer for further information and supply details.
Three Doors – Two 90-degree doors with door stays allowing access to the equipment bay, and one 180-degree door allowing access to the PDU compartment.
Ventilation – Cabinet is ventilated using a vent system above the doors.
Optional Pedestals – Placed between cabinet and plinth/chamber to prevent moisture ingress.
Cable Entry – Opening at the base for cable entry. To be sealed with resin-based product.
Cabinet Heater – Stego touch safe heater located in the equipment bay.
MET – Main Earth Terminal located in the PDU bay.
PDU Cable entry – 3x 32.0mm, 9x 25.0mm, 18x 20.0mm diameter holes fitted with blanks located in the bottom of the PDU.
Surge Protection – Type 1, 2 & 3 surge protection fitted.
Hinged viewing covers on circuits within the PDU.
Ritherdon Guarantee – All metalwork is guaranteed for 25 years.

Further Help

National Highways enclosures are supplied without keys as standard. Please contact your Scheme Designer for further information and supply details.

We would be happy to discuss your requirements for National Highways Cabinets or any other highways project. Please email us or call 01254 819100 to talk about any other Cabinets from the NH Approved Range or from the rest of Ritherdon's product ranges.

Still don't know whether this unit is suitable for you? Please see this guide, which includes a table with dimensions of all our cabinet and feeder pillar products.

To find out more about the TR official documents, visit the Traffic Systems and Signing (TSS) Plans Registry to access the register of statutory approvals for traffic control equipment.

For further information on all Designs, standards and specifications please refer to National Highways.