MERSEN FUSE BSL NH2400A 185mm BL2V403K000 BL2V403K000

Q: What fuse size is compatible with this fuse base?

The unit is designed for NH Size 2 fuse links.

Q: What is the rated current?

The Mersen A1023431 has a 400 A continuous current rating.

Q: Which busbar system does it support?

This fuse base is designed for installation on a 185 mm busbar system.

Q: What type of terminal connection does it use?

The A1023431 features robust frame terminal connections for secure conductor termination.

NH-vertical fuse rail accommodating NH2 fuses with 690VAC and 400A rating, featuring 3-pole design, cage clamp cable connection, and V-terminal for easy installation.

SKU: A1023431Alt SKU: BL2V403K000MPN: A1023431

List Price £295.08 ex VAT

Your Price (ex VAT)

£295.08

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Manufacturer Lead Time

£295.08

Why Choose the Mersen A1023431 BSL NH Fuse Base?

The Mersen A1023431 is a robust BSL NH fuse base designed to provide reliable mounting and protection for NH Size 2 fuse links in industrial low-voltage power distribution systems. This three-pole fuse base is engineered for dependable performance in switchboards, distribution panels and OEM electrical equipment, offering safe fuse installation and straightforward maintenance.

Designed for installation on a 185 mm busbar system, the A1023431 supports a 400 A continuous current rating with a maximum operating voltage of 690 V AC. The unit features robust frame terminal connections, providing secure conductor termination for demanding industrial environments.

As part of Mersen's proven NH fusegear range, this fuse base combines durable construction with compact installation dimensions, making it an excellent choice for electrical engineers, panel builders and maintenance professionals seeking dependable overcurrent protection solutions.

Key Advantages

Designed for NH Size 2 fuse links.
400 A rated current for industrial power distribution.
690 V AC operating voltage.
Suitable for 185 mm busbar systems.
Secure frame terminal connections.
Reliable solution for switchboards and industrial distribution equipment.

Key Features

Mersen BSL NH fuse base series.
Three-pole fuse base.
Compatible with NH Size 2 fuse links.
400 A continuous current rating.
690 V AC rated voltage.
Designed for 185 mm busbar mounting.
Heavy-duty frame terminal connections.
Compact industrial construction for panel integration.

Reliable Fuse Mounting for Industrial Power Distribution

NH fuse bases provide secure installation of industrial fuse links while ensuring dependable electrical connections and simplified maintenance. Their robust construction allows reliable operation in demanding power distribution applications where high current capacity and safe fuse replacement are essential.

The Mersen A1023431 has been developed for professional switchboard installations requiring NH Size 2 fuse protection on 185 mm busbar systems. Its durable frame terminal connections help ensure secure conductor termination and long-term operational reliability.

Typical Applications

Industrial switchboards.
Low-voltage power distribution panels.
Motor control centres.
OEM machinery.
Electrical infrastructure.
Industrial automation systems.

Technical Specifications

Phase	Three Phase
Item number	A1023431
Catalogue No	BL2V403K000
Description	NH-vertical fuse rail BSL Size NH2 690VAC 400A 3-Pole Bus bar system 185 mm With cable connection Cage Clamp With V-terminal
EAN/UPC Code	4027597029760
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	400 A
RoHS Compliant	Yes
AC or DC	AC
Fuse Size	NH2
Fuse Type/Class	DIN
Design Details	V-terminal 35-240 mm²
Number of Poles	3-Pole
Fuse Installation Method	Clip-in
Max Fuse Rating	400 A
Max Power dissipation of Fuse Links Pn	8 W
Max Power dissipation of Solid Links Pn	126 W
Power Dissipation by Ith without Fuse-Links	54 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	3.8 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	400 A
Product Weight	3.8 kg
Conventional Free Air thermal Current - Solid Links	630 A
HS Code	85361090
Country of Manufacture	Hungary
Poles	3-pole
Fuse Size	NH2
Voltage	690 V

Frequently Asked Questions

What is the Mersen A1023431 used for?

The A1023431 is a three-pole NH fuse base designed to mount NH Size 2 fuse links in industrial low-voltage power distribution systems.

What fuse size is compatible with this fuse base?

The unit is designed for NH Size 2 fuse links.

What is the rated current?

The Mersen A1023431 has a 400 A continuous current rating.

Which busbar system does it support?

This fuse base is designed for installation on a 185 mm busbar system.

What type of terminal connection does it use?

The A1023431 features robust frame terminal connections for secure conductor termination.

Trusted for Industrial Electrical Distribution

Mersen NH fuse bases are trusted by electrical engineers and panel builders worldwide to provide reliable fuse mounting, dependable circuit protection and long service life in industrial power distribution systems.

Phase	Three Phase
Item number	A1023431
Catalogue No	BL2V403K000
Description	NH-vertical fuse rail BSL Size NH2 690VAC 400A 3-Pole Bus bar system 185 mm With cable connection Cage Clamp With V-terminal
EAN/UPC Code	4027597029760
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	400 A
RoHS Compliant	Yes
AC or DC	AC
Fuse Size	NH2
Fuse Type/Class	DIN
Design Details	V-terminal 35-240 mm²
Number of Poles	3-Pole
Fuse Installation Method	Clip-in
Max Fuse Rating	400 A
Max Power dissipation of Fuse Links Pn	8 W
Max Power dissipation of Solid Links Pn	126 W
Power Dissipation by Ith without Fuse-Links	54 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	3.8 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	400 A
Product Weight	3.8 kg
Conventional Free Air thermal Current - Solid Links	630 A
HS Code	85361090
Country of Manufacture	Hungary
Poles	3-pole
Fuse Size	NH2
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.

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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

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

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

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

Made-to-order items

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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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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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