MERSEN FUSE Amperemeter unit 630A NH1-3 3P 1.000.110

Q: Which products is it compatible with?

It is designed for compatible Mersen MULTIVERT® and i-Xtensio® Size 3 fuse switch disconnectors.

Q: What current rating is it designed for?

The unit is intended for 630 A Size 3 applications.

Q: Can it monitor all three phases?

Yes. The unit provides three-phase measurement with selectable monitoring of L1, L2 or L3.

Why Choose the MERSEN FUSE Amperemeter unit 630A NH1-3 3P 1.000.110?

SKU: W1023289Alt SKU: 1.000.110MPN: W1023289

List Price £255.28 ex VAT

Your Price (ex VAT)

£255.28

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Manufacturer Lead Time

£255.28

Why Choose the Mersen W1023289 Ammeter Unit?

The Mersen W1023289 is a high-quality ammeter unit with drag indicator designed for use with Mersen MULTIVERT® and i-Xtensio® NH fuse switch disconnectors. It provides accurate three-phase current measurement, enabling operators and maintenance engineers to monitor electrical load conditions and identify peak current values within industrial power distribution systems.

Designed as an original Mersen accessory, the W1023289 integrates seamlessly with compatible fuse switch disconnectors, providing a simple and reliable method of monitoring current across all three phases. Its drag indicator records maximum current values, making it ideal for preventative maintenance, troubleshooting and load analysis.

Suitable for Size 3, 630 A applications, this ammeter unit supports three-phase measurement (L1, L2 or L3 selectable) and is engineered for long-term reliability in demanding industrial environments.

Key Advantages

Original Mersen MULTIVERT® accessory.
Designed for Size 3, 630 A fuse switch disconnectors.
Three-phase current measurement capability.
Integrated drag indicator records peak current values.
Supports preventative maintenance and system diagnostics.
Simple installation into compatible Mersen switch disconnectors.

Key Features

Mersen W1023289 ammeter unit.
Compatible with MULTIVERT® and i-Xtensio® systems.
Designed for Size 3, 630 A applications.
Three-pole measurement selectable on L1, L2 or L3.
Integrated drag indicator (maximum value pointer).
Compact industrial design.
Original manufacturer accessory.
Approximate weight 83 g.

Reliable Current Monitoring for Electrical Distribution

Monitoring electrical current is essential for maintaining safe and efficient operation of industrial power distribution systems. The Mersen W1023289 allows engineers to measure current levels while recording maximum values, helping identify overload conditions, balance electrical loads and improve preventative maintenance programmes.

As a genuine Mersen accessory, it is manufactured to integrate directly with compatible MULTIVERT® and i-Xtensio® switch disconnectors, ensuring dependable performance and straightforward installation.

Typical Applications

Industrial switchboards.
Low voltage power distribution systems.
Motor control centres.
Electrical maintenance and diagnostics.
Panel building.
Commercial and industrial electrical installations.

Technical Specifications

Current	630 A
Phase	Three Phase
Manufacturer	Mersen
Series	MULTIVERT® / i-Xtensio® Accessories
Model	W1023289
Catalogue number	1.000.110
Product type	Ammeter unit
Application	Current measurement accessory
Compatible switch size	Size 3
Current rating	630 A
Measurement type	Three-pole (L1, L2 or L3 selectable)
Indicator type	Drag indicator
Compatible products	MULTIVERT® and i-Xtensio® fuse switch disconnectors
Approximate weight	83 g
Device Type	Accessory
Fuse Type	NH (DIN)
Fuse Size	NH1

Frequently Asked Questions

What is the Mersen W1023289 used for?

The W1023289 is an ammeter unit used to measure current and record peak current values in compatible Mersen fuse switch disconnectors.

Which products is it compatible with?

It is designed for compatible Mersen MULTIVERT® and i-Xtensio® Size 3 fuse switch disconnectors.

What current rating is it designed for?

The unit is intended for 630 A Size 3 applications.

What does the drag indicator do?

The drag indicator records the highest measured current, helping maintenance engineers identify peak load conditions.

Can it monitor all three phases?

Yes. The unit provides three-phase measurement with selectable monitoring of L1, L2 or L3.

Trusted for Industrial Electrical Monitoring

Mersen monitoring accessories are widely used by electrical engineers and panel builders to provide dependable current measurement, improve maintenance planning and support safe operation of industrial power distribution equipment.

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.

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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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