MERSEN FUSE BSL NH1250A 185mm BL1E403K000 BL1E403K000

Q: Which fuse size is compatible with this fuse rail?

The X1023428 is designed for NH Size 1 fuse-links.

Q: What current and voltage ratings does it support?

The fuse rail is rated at 250 A with a maximum operating voltage of 690 V AC.

Q: What type of cable connection does it use?

The unit uses M10 insert nut screw cable connections for secure conductor termination.

Q: Which busbar system is required?

The X1023428 is designed for installation onto a 185 mm busbar system.

NH-vertical fuse rail BSL Size NH1 690VAC 250A 3-Pole Bus bar system 185 mm With cable connection Screw – M10 insert nut designed for reliable circuit protection and easy installation.

SKU: X1023428Alt SKU: BL1E403K000MPN: X1023428

List Price £252.69 ex VAT

Your Price (ex VAT)

£252.69

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Manufacturer Lead Time

£252.69

Why Choose the Mersen X1023428 BSL NH Fuse Rail?

The Mersen X1023428 is a robust BSL NH vertical fuse rail designed for safe circuit protection and reliable power distribution in low-voltage electrical installations. Part of the proven Mersen BSL NH Fuse Rail series, it is engineered for direct installation onto 185 mm busbar systems, making it an ideal solution for industrial switchboards, distribution panels and OEM electrical equipment.

Designed for demanding industrial environments, the X1023428 features a modular construction that enables fast installation and simplified maintenance. Its IP20 touch-protected design improves operator safety while delivering dependable performance throughout the service life of the installation.

Rated at 250 A and 690 V AC, the X1023428 is designed for NH Size 1 fuse-links and incorporates M10 insert nut cable connections. The three-pole configuration provides reliable protection for industrial and commercial low-voltage distribution systems.

Key Advantages

Heavy-duty NH vertical fuse rail for industrial power distribution.
250 A rated current.
690 V AC IEC rated voltage.
Designed for NH Size 1 fuse-links.
Direct installation onto 185 mm busbar systems.
IP20 touch-protected construction.
M10 insert nut cable connections for secure installation.
Modular design enables fast installation and maintenance.

Key Features

Mersen BSL NH Fuse Rail series.
250 A conventional thermal current.
690 V AC IEC rated voltage.
NH Size 1 fuse compatibility.
Three-pole construction.
M10 insert nut cable terminations.
Designed for 185 mm busbar systems.
50 / 60 Hz operation.
IP20 protection against accidental contact.
RoHS compliant.

Reliable Protection for Industrial Power Distribution

The Mersen X1023428 provides a safe and efficient method of mounting NH fuse-links within low-voltage electrical distribution systems. Its modular BSL construction enables straightforward integration into switchboards while delivering dependable overcurrent protection and high operator safety.

The direct busbar mounting arrangement reduces installation time while the robust construction supports long service life in demanding industrial and commercial applications.

Typical Applications

Industrial switchboards.
Low-voltage distribution panels.
Cable distribution cabinets.
Motor control centres.
OEM machinery and automation systems.
Commercial electrical infrastructure.

Technical Specifications

Phase	Three Phase
Item number	X1023428
Catalogue No	BL1E403K000
Description	NH-vertical fuse rail BSL Size NH1 690VAC 250A 3-Pole Bus bar system 185 mm With cable connection Screw - M10 insert nut
EAN/UPC Code	9008567005859
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	250 A
RoHS Compliant	Yes
AC or DC	AC
Fuse Size	NH1
Fuse Type/Class	DIN
Design Details	3 M10 insert nuts
Number of Poles	3-Pole
Fuse Installation Method	Clip-in
Max Fuse Rating	250 A
Max Power dissipation of Fuse Links Pn	3 W
Max Power dissipation of Solid Links Pn	65 W
Power Dissipation by Ith without Fuse-Links	22 W
Installation Mounting	Bus bar system 185 mm
Product Width	98 mm
Product Length	122.9 mm
Product Height	558 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	3.1 kg
Sell Pack Width	100 mm
Sell Pack Length	130 mm
Sell Pack Height	755 mm
Product group	Fuse Rails
Conventional Free Air thermal Current With Fuse-Links Ith	250 A
Product Weight	3.1 kg
Conventional Free Air thermal Current - Solid Links	400 A
Poles	3-pole
Fuse Size	NH1
Voltage	690 V

Frequently Asked Questions

What is the Mersen X1023428 used for?

The X1023428 is an NH vertical fuse rail designed to mount NH fuse-links safely within industrial and commercial low-voltage power distribution systems.

Which fuse size is compatible with this fuse rail?

The X1023428 is designed for NH Size 1 fuse-links.

What current and voltage ratings does it support?

The fuse rail is rated at 250 A with a maximum operating voltage of 690 V AC.

What type of cable connection does it use?

The unit uses M10 insert nut screw cable connections for secure conductor termination.

Which busbar system is required?

The X1023428 is designed for installation onto a 185 mm busbar system.

Trusted for Industrial Electrical Distribution

Mersen BSL NH fuse rails are trusted worldwide by panel builders, OEMs and electrical engineers for providing dependable circuit protection, safe installation and long-term reliability in industrial power distribution systems.

Phase	Three Phase
Item number	X1023428
Catalogue No	BL1E403K000
Description	NH-vertical fuse rail BSL Size NH1 690VAC 250A 3-Pole Bus bar system 185 mm With cable connection Screw - M10 insert nut
EAN/UPC Code	9008567005859
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	250 A
RoHS Compliant	Yes
AC or DC	AC
Fuse Size	NH1
Fuse Type/Class	DIN
Design Details	3 M10 insert nuts
Number of Poles	3-Pole
Fuse Installation Method	Clip-in
Max Fuse Rating	250 A
Max Power dissipation of Fuse Links Pn	3 W
Max Power dissipation of Solid Links Pn	65 W
Power Dissipation by Ith without Fuse-Links	22 W
Installation Mounting	Bus bar system 185 mm
Product Width	98 mm
Product Length	122.9 mm
Product Height	558 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	3.1 kg
Sell Pack Width	100 mm
Sell Pack Length	130 mm
Sell Pack Height	755 mm
Product group	Fuse Rails
Conventional Free Air thermal Current With Fuse-Links Ith	250 A
Product Weight	3.1 kg
Conventional Free Air thermal Current - Solid Links	400 A
Poles	3-pole
Fuse Size	NH1
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

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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

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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.

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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.

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28 Trusted Manfacturers

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