Navitas N7MX 7 Way Metal Consumer Unit with 100A Main Switch & Type 2+3 SPD

The Navitas N7MX 7 Way Consumer Unit is a compact, metal-clad electrical distribution board designed to provide seven usable outgoing ways with integrated surge protection for modern electrical installations.

Part of the latest Navitas MX consumer unit range, the N7MX features a 100A double-pole main switch and a busbar-adaptable Type 2+3 surge protection device (SPD), providing protection against transient overvoltages while retaining the board's full outgoing circuit capacity.

Unlike conventional SPD-equipped consumer units where surge protection can occupy an outgoing way, the innovative Navitas SPD can connect directly to the busbar assembly. This allows the N7MX to retain all seven usable ways in its standard configuration.

For installations where dedicated local overcurrent protection for the SPD is preferred, the consumer unit is supplied with the required line conductor, enabling a compatible 32A MCB to be fitted separately where required.

Manufactured from robust steel with a textured white finish, the N7MX combines practical installation features with a professional appearance. Its silver-coated busbar, integrated locking mechanism and multiple cable entry knockouts make it a versatile choice for electricians and electrical contractors.

Features

• 7 usable outgoing ways – Provides seven circuit positions with the SPD connected directly to the busbar in the standard configuration.
• Type 2+3 surge protection – Helps protect connected electrical equipment against transient overvoltages.
• Busbar-adaptable SPD system – Designed to retain outgoing circuit capacity without requiring a dedicated SPD MCB as standard.
• 100A double-pole main switch – Provides a main isolation point for the consumer unit.
• Optional 32A SPD overcurrent protection – Supplied with a line conductor to support the installation of a suitable 32A MCB where required.
• Steel enclosure – Durable metal construction with a professional textured white finish.
• Silver-coated 100A busbar – Designed for reliable electrical distribution within the compatible Navitas system.
• Compact dimensions – Measures 265mm high × 248mm wide × 104mm deep.
• Multiple cable entry points – Top, side, bottom and rear knockouts provide installation flexibility.
• Cage-clamp connections – Designed to support secure electrical termination.
• Locking provision – Compatible with the separately available Navitas NK-L lock.
• 37-point quality inspection – Each board undergoes the manufacturer's quality control process.
• 10-year manufacturer warranty – Subject to Navitas warranty terms.

• Manufacturer: Navitas
• Product Range: Navitas MX
• Manufacturer Part Number: N7MX
• Product Type: Metal Consumer Unit with Surge Protection
• Number of Usable Ways: 7
• Incomer: 100A Double-Pole Main Switch
• SPD Type: Type 2+3
• SPD Installation: Busbar Adaptable
• Optional SPD Overcurrent Protection: 32A MCB using supplied line conductor
• Busbar Rating: 100A
• Busbar Finish: Silver Coated
• Mounting Type: Surface Mounted
• Height: 265mm
• Width: 248mm
• Depth: 104mm
• IP Rating: IP4X
• Enclosure Material: Steel
• Finish: RAL 9010 Soft Matt White
• Locking Provision: Yes – requires NK-L accessory
• Frequency: 50Hz / 60Hz
• Cable Entry: Top, Side, Bottom and Rear Knockouts
• Cable Clamp: Cage Clamp
• Manufacturer Warranty: 10 Years
• Standards: BS EN 61439-1 & 3; BS EN 61643-11

Seven Usable Ways with Integrated Surge Protection

One of the main advantages of the Navitas N7MX is its innovative surge protection arrangement.

In many traditional surge-protected consumer units, an outgoing way is used to accommodate a dedicated SPD protective device, reducing the number of available circuit positions.

The Navitas MX system features a busbar-adaptable SPD that can connect directly to the busbar assembly, allowing the board to retain all seven usable outgoing ways in its standard configuration.

This makes the N7MX particularly suitable for compact installations where available circuit capacity is important.

Type 2+3 Surge Protection

The N7MX incorporates a Type 2+3 surge protection device designed to help protect electrical installations and connected equipment against transient overvoltages.

Surge protection is increasingly important in modern properties containing sensitive electronic equipment, smart home devices, computers, appliances and connected technologies.

The integrated SPD provides a practical solution for electricians specifying consumer units with surge protection.

The suitability of the SPD arrangement must be assessed against the installation design and applicable electrical regulations.

Optional 32A SPD Overcurrent Protection

The N7MX is designed to offer flexibility in how the surge protection device is connected.

Its standard busbar-adaptable configuration allows the SPD to be installed without occupying an outgoing way.

Where dedicated local overcurrent protection is preferred or required by the installation design, the board is supplied with the necessary line conductor to support the addition of a compatible 32A MCB.

Please note: The optional 32A MCB is not stated as included and should be selected separately where required. Using an outgoing MCB position may reduce the number of ways available for final circuits.

Durable Steel Consumer Unit Enclosure

The Navitas N7MX features a robust steel enclosure with a distinctive textured white finish.

The RAL 9010 soft matt appearance offers a neat, professional finish suitable for domestic and appropriate commercial installations.

The consumer unit also incorporates a silver-coated busbar and an integrated locking provision, with the separately available NK-L accessory required to secure the enclosure.

Flexible Cable Entry and Installation

The N7MX has been designed with installation convenience in mind.

Multiple knockouts on the top, sides, bottom and rear provide flexible cable entry options, helping electricians route incoming and outgoing cables to suit the installation.

The compact dimensions of 265mm × 248mm × 104mm make the board suitable for locations where space is limited.

Cage-clamp terminals provide a practical connection method, while the surface-mounted enclosure supports straightforward positioning.

Typical Applications

The Navitas N7MX is suitable for a range of appropriately designed electrical installations, including:

• Domestic consumer unit replacements
• House extensions and property renovations
• Garage electrical installations
• Garden rooms and home offices
• Workshops and outbuildings
• Heat pump installations
• EV charging circuit installations
• Small commercial distribution requirements

Circuit design, protective device selection and installation suitability must be assessed by a competent electrical installer.

Quality Assurance and Manufacturer Warranty

Every Navitas MX consumer unit undergoes a 37-point quality control inspection before leaving the factory.

The N7MX is also supplied with a 10-year manufacturer warranty, subject to Navitas warranty conditions.

Compatibility and Installation

The Navitas N7MX is designed for use with compatible Navitas protective devices and accessories.

The unit is supplied with a 100A double-pole main switch and a Type 2+3 surge protection device.

Outgoing circuit protective devices, such as MCBs and RCBOs, must be selected separately unless explicitly included in the supplier's package contents.

Electrical installation and testing must be carried out by a suitably competent person in accordance with the current edition of BS 7671, the manufacturer's instructions and applicable UK requirements.

Frequently Asked Questions

How many usable ways does the Navitas N7MX have?

The N7MX provides seven usable outgoing ways in its standard configuration, with the surge protection device connected directly to the busbar assembly.

Does the N7MX include surge protection?

Yes. The consumer unit features a Type 2+3 surge protection device designed to help protect against transient overvoltages.

Does the SPD take up one of the seven ways?

Not in the standard busbar-adaptable configuration. The SPD can connect directly to the busbar, leaving seven outgoing ways available.

Does the N7MX include a main switch?

Yes. It features a 100A double-pole main switch.

Can I install a separate MCB for SPD protection?

Yes. The unit is supplied with a line conductor to support the optional installation of a compatible 32A MCB, where required. The MCB is selected separately.

Are MCBs or RCBOs included?

What are the dimensions of the N7MX?

The enclosure measures 265mm high, 248mm wide and 104mm deep.

Is the consumer unit metal or plastic?

The N7MX has a steel enclosure finished in RAL 9010 soft matt white.

Can the Navitas N7MX be locked?

Yes. The enclosure has a locking provision and requires the separately available Navitas NK-L lock accessory.

Is the N7MX suitable for an EV charger or heat pump?

It can form part of an appropriately designed installation. The electrician must confirm the circuit protection, capacity, load requirements and compatibility of the selected devices.

What warranty does the Navitas N7MX have?

The product carries a 10-year manufacturer warranty, subject to Navitas terms and conditions.

Can I use other brands of MCBs or RCBOs in this consumer unit?

Only protective devices specifically approved by Navitas for the N7MX should be used. Compatibility should never be assumed from physical fit alone.