Ansell APRILED/WW Downlights £7.99 & Xpelair C4TSR Extractor Fan £24.99

There are no items in your basket
TOTAL £0.00 £0.00
Prices are including vat Prices are excluding vat VIEW CART


Request a Quote

If you need help pricing up your next large project we would love to help! Or maybe you are looking for items not already on our site?, we can source most well-known electrical wholesale brands at competitive prices Please complete the details below and we will respond ASAP

Hager NBN320A 3 Module Triple Pole Type B Miniature Circuit Breaker MCB 20A 10kA


5 in stock for next day delivery see cut off times
13 in stock for 2-3 day delivery
£36.86 inc Vat
£30.72 ex Vat
Free delivery for orders over £50 ex VAT
Hager Triple Pole Miniature Circuit Breaker, 20A 10kA B-Curve.

These MCBs allow you to ensure
• Protection of circuits against short circuits
• Protection of circuits against overload current
• Control
• Isolation

The state of isolation is clearly indicated by the “O†mechanical position on the toggle.
Hager's Type B distribution boards are designed to help electrical installaers meet the challenges of a modern installation. They are available in both 125A and 250A ratings.

Ease of metering
You can install a meter next to the incoming device in the 125A board. Dual metered boards are also available. Another option is to install a surge protection device.

Simple cable entry
Trunking and cable entry facility means there is no need to use paxolin. Cable protection is built into the endplate cable entry.

Neutral bars
Transparent IP2X neutral cover allows for ease of cable installation. Screws fully turned down for easy and fast cabling.

Earth terminal cabling
Earth terminal bars are mounted offset to neutral terminal bars and angled towards the installer for easy cable installation. The screws are fully turned down for simple and fast cabling.

Simple extensions
18 and 36 module DIN rail extension boxes are available. No spacers required to mount boards, cableways or extension boxes. Boxes can be mounted at the top or to either side of the board.

The 17th Edition plus a demand for more metering and control devices have changed the nature of sub and final distribution in commercial projects.

17th Edition
The 17th Edition wiring regulations means that commercial installations need more design and planning for the final circuit configuration. In most cases more of the final circuits will need RCD protection.

Many of these installations will contain equipment that is likely to have a small earth leakage – multiple PCs and printers for instance. This may mean that you need to install more circuits for socket outlets and protect each with individual RCBOs.

Measurement matters
As a nation we are more aware of energy consumption. Most if not all commercial properties now demand a metering strategy at the design stage so that building end users can monitor where energy is being used.

Energy saving
In addition, DIN rail mounted control devices such as time switches, lighting dimmers and twilight switches are becoming increasingly popular. On a more complex level many building automation systems also operate by controlling the final circuits.
All of these factors affect the installation of distribution boards. Our new range of type B boards meets these needs.

Why specify Invicta 3 Type B boards?
• Multiple incomer choices for 125A and 250A boards
• Optimal cabling space
• Earth and neutral bars positioned for easier cabling
• Screws on earth and neutral bars need less turns to fit cable
• Unique trunking entry system – no need for paxolin
• Metering fitted next to incomer / within board
• Wide range of extension boxes for side, top and bottom
• No spacers needed to mount boards, cableways or extension boxes
• Removable door and front cover for ease of fitting
• 100A tap off for board extensions or MCB

Technical Information
Ean Code 3250614618352
Trip Type Type B
Short Circuit Rating 10kA
Cable Capacity 35 (Rigid) 25 (Flexible) mm2
Product MCB
Type MCB
Voltage 230|400 V
Pole Configuration Triple Pole (3P)
Mounting DIN Rail
Width 52.5 mm
Current Rating 20A
Standards BS EN 60898
Number Of Poles Triple Pole (3P)
Number Of Modules 3

Delivery Costs

Our standard delivery charge to UK mainland addresses is £5.49 ex-VAT.

Take advantage of FREE* Delivery when you spend over £50 (per order) ex-VAT.

*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12.00 ex-VAT.

Solar Panels, Batteries and Inverters

Due to their size all solar panels, batteries and inverters orders up to 50 qty will be despatched on a pallet and incur a £120** ex-VAT delivery charge.

**£180 ex VAT to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes.

Click here to find out more.