MERSEN FUSE MB1 250A 3P 1.002.562 1.002.562

High-capacity NH fuse-switch disconnector with 3-pole switching, 250A rating, bottom fitting for panel mounting and clamp strap connection.

SKU: W1023059Alt SKU: 1.002.562MPN: W1023059

List Price £305.20 ex VAT

Your Price (ex VAT)

£305.20

Manufacturer Lead Time Please contact us for a delivery time before you order

Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

Quantity:

SUBTOTAL (EX VAT) £305.20

Trade pricing is personalised to your account

Manufacturer Lead Time

£305.20

Why Choose the NH Fuse-Switch Disconnector MULTIBLOC® Size 1 250A 3-Pole?

Engineered for reliable power distribution, the MULTIBLOC® Size 1 250A 3-pole fuse-switch disconnector provides secure, high-capacity circuit protection and isolation for industrial installations. Its robust bottom fitting and clamp strap connection ensure optimal conductivity and safe panel mounting.

This unit is designed for efficient installation while supporting fast, safe fuse changes and maintenance. Suitable for demanding three-phase applications, it maximises uptime and safety in harsh or high-load environments.

Product Code: W1023059

Key Benefits

High current rating of 250A suitable for demanding industrial applications.
Robust bottom fitting and clamp strap design for secure and reliable panel mounting.
Supports fast and safe fuse replacement to reduce downtime.
Designed for three-pole switching ensuring effective isolation in three-phase systems.
High short circuit current rating (up to 80kA) for enhanced safety and protection.
Compact dimensions facilitating integration into existing switchgear assemblies.

Compatibility

This fuse-switch disconnector is compatible with NH Size 1 fuse links and solid links designed for IEC Fuse Switch Disconnectors. It is suitable for use in industrial power distribution panels requiring 3-pole switching at voltages up to 690 V AC and frequencies of 50 to 60 Hz.

Applications

Industrial power distribution and control panels.
Protection and isolation in three-phase electrical installations.
Switchgear assemblies requiring reliable fuse-switch disconnectors.
Heavy machinery and motor protection circuits.
Renewable energy systems with high current demands.

Technical Specifications

Current	250 A
Phase	Three Phase
Item number	W1023059
Catalogue No	1.002.562
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bottom Fitting/panel Connection Clamp Strap clamp straps
EAN/UPC Code	9008567001639
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	250 A
Utilization Category	AC 23 B @ Ue = AC 400 V; Ie = 250 A AC 22 B @ Ue = AC 500 V; Ie = 250 A AC 21 B @ Ue = AC 690 V; Ie = 200 A DC 21 B @ Ue = DC 440 V; Ie = 250 A
Switchability	3-pole switching
AC or DC	AC
Short Circuit Current Rating (SCCR)	80kA@Ue=AC 400 V;Ie=250 A / 80kA@Ue=AC 500 V;Ie=250 A / 80kA (1-,2-pole)@Ue=AC 690 V;Ie=200 A / 50kA (3-,4-pole)@Ue=AC 690 V;Ie=200 A
Fuse Size	1
Number of Poles	3-Pole
Degree of Pollution	3
Rated Impulse Withstand Voltage	12 kV
Rated Insulation Voltage	1000 V
Rated SC Withstand	8 kA / 1 s
Max Power dissipation of Fuse Links Pn	23 W
Max Power dissipation of Solid Links Pn	2.6 W
Power Dissipation by Ith without Fuse-Links	13 W
Power Dissipation by Ith without Solid Links	33 W
Rated short circuit making capacity with solid links Icm	8.2 kA
Installation Mounting	Bottom Fitting/panel
Product Width	185 mm
Product Length	110.5 mm
Product Height	246 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	2.42 kg
Sell Pack Width	187 mm
Sell Pack Length	248 mm
Sell Pack Height	112 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	250 A
Product Weight	2.42 kg
Conventional Free Air thermal Current - Solid Links	400 A
HS Code	85365080
Country of Manufacture	Hungary
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V

Frequently Asked Questions

What type of fuse links are compatible with this fuse-switch disconnector?

The NH Fuse-Switch Disconnector MULTIBLOC® Size 1 is compatible with NH Size 1 fuse links and solid links designed for IEC Fuse Switch Disconnectors.

Can this disconnector be used in DC applications?

This particular model is designed primarily for AC applications as indicated by its AC rating and utilisation category. For DC applications, please consult product specifications or contact the supplier.

What is the maximum short circuit current rating?

The device has a short circuit current rating (SCCR) of up to 80kA at 400 V and 500 V AC, and 50kA at 690 V AC for 3-pole switching.

How is the device mounted?

The fuse-switch disconnector is mounted using a bottom fitting designed for panel installation, ensuring secure and stable mounting.

Common Search Terms

NH fuse switch disconnector, MULTIBLOC fuse holder, 250A fuse switch, 3-pole fuse switch, industrial fuse switch, IEC fuse switch disconnector, panel mount fuse switch, high current fuse switch, bottom fitting fuse switch, clamp strap fuse holder

Current	250 A
Phase	Three Phase
Item number	W1023059
Catalogue No	1.002.562
Description	NH fuse-switch disconnector MULTIBLOC® Size 1 250A 3-Pole switching Bottom Fitting/panel Connection Clamp Strap clamp straps
EAN/UPC Code	9008567001639
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	250 A
Utilization Category	AC 23 B @ Ue = AC 400 V; Ie = 250 A AC 22 B @ Ue = AC 500 V; Ie = 250 A AC 21 B @ Ue = AC 690 V; Ie = 200 A DC 21 B @ Ue = DC 440 V; Ie = 250 A
Switchability	3-pole switching
AC or DC	AC
Short Circuit Current Rating (SCCR)	80kA@Ue=AC 400 V;Ie=250 A / 80kA@Ue=AC 500 V;Ie=250 A / 80kA (1-,2-pole)@Ue=AC 690 V;Ie=200 A / 50kA (3-,4-pole)@Ue=AC 690 V;Ie=200 A
Fuse Size	1
Number of Poles	3-Pole
Degree of Pollution	3
Rated Impulse Withstand Voltage	12 kV
Rated Insulation Voltage	1000 V
Rated SC Withstand	8 kA / 1 s
Max Power dissipation of Fuse Links Pn	23 W
Max Power dissipation of Solid Links Pn	2.6 W
Power Dissipation by Ith without Fuse-Links	13 W
Power Dissipation by Ith without Solid Links	33 W
Rated short circuit making capacity with solid links Icm	8.2 kA
Installation Mounting	Bottom Fitting/panel
Product Width	185 mm
Product Length	110.5 mm
Product Height	246 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	2.42 kg
Sell Pack Width	187 mm
Sell Pack Length	248 mm
Sell Pack Height	112 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	250 A
Product Weight	2.42 kg
Conventional Free Air thermal Current - Solid Links	400 A
HS Code	85365080
Country of Manufacture	Hungary
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V

UK delivery

Delivery options

Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.

This product Lead time on request

Please contact us for a delivery time before you order

Standard delivery

£8 ex VAT · free over £200

UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.

Heavier items may be charged at a weight-based or pallet rate, shown at checkout.

Collect from our showroom

Mon–Fri, 8am–5pm

Order and pay online, then collect from our showroom.

Please allow 15–30 minutes after ordering for us to prepare your order.

Northern Ireland, ROI & export

Priced at checkout

We deliver to Northern Ireland, the Republic of Ireland and overseas.

Delivery is calculated at checkout based on your destination.

Orders with mixed availability

Shipped complete

If part of your order is on a lead time, we hold it and send everything together.

Need the in-stock items sooner? Ask us and we can split the delivery.

Business customer returns

Returns & order support

Need to return an item? Find the guidance for your order below, then contact our team before sending anything back.

Stocked items

Request within 30 days

Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.

Items must be unused, in resalable condition and in their original packaging, and returns need our approval first. Return carriage is at your cost, and the original delivery charge is not refunded.

Faulty or damaged items

Tell us as soon as possible

Faulty, damaged on delivery or the wrong product supplied? Contact our team as soon as possible with the details.

We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.

Made-to-order items

Manufacturer approval needed

Manufactured, configured and special-order products can only be returned with the manufacturer’s approval. Any handling charge is agreed with you when you request the return.

This does not affect claims for faulty goods or items that do not meet the agreed specification.

LED Controls showroom with electrical products on display

Let’s get your return sorted.

Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.

Email returns team 01706 242050

The 30-day return request period applies to change-of-mind returns for stocked items. It does not limit your statutory rights for faulty or non-conforming goods.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

Priority sourcing and supply support

Flexible payment terms for qualifying organisations

Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

What are your delivery times and costs?

What about warranties, returns and faulty items?

● latest blog

Discover our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

by admin | Aug 11, 2026 | News

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

by admin | Jan 17, 2026 | Product Spotlight

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution