MERSEN FUSE SC US HOLDER 14X51 MICRO US14S1P

Q: Which fuse holders is the USMSW1 compatible with?

The USMSW1 is designed specifically for compatible Mersen UltraSafe™ US14 single-pole modular fuse holders.

Mersen USMSW1 auxiliary contact kit for compatible UltraSafe US14 single-pole modular fuse holders, providing remote monitoring and signalling.

SKU: USMSW1Alt SKU: US14S1PMPN: Y227928

List Price £18.01 ex VAT

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£18.01

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Manufacturer Lead Time

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Why Choose the Mersen USMSW1 Auxiliary Contact Kit?

The Mersen USMSW1 is a genuine auxiliary contact kit designed for compatible Mersen UltraSafe™ US14 modular fuse holders. It enables remote monitoring of the fuse holder by providing a switching contact that can be connected to PLCs, alarm circuits, building management systems and industrial control equipment.

Specifically developed as a single-pole auxiliary contact kit, the USMSW1 allows panel builders and maintenance engineers to monitor fuse holder operation remotely, helping improve fault detection and reduce equipment downtime. The accessory integrates neatly with compatible UltraSafe US14 fuse holders without increasing the overall panel footprint.

The compact design makes the USMSW1 ideal for industrial automation systems, switchboards, OEM machinery and electrical distribution panels where remote indication of fuse holder status is required. It is supplied as a complete accessory kit ready for installation onto compatible US14 fuse holders.

Key Advantages

Genuine Mersen UltraSafe™ US14 auxiliary contact kit.
Designed for single-pole US14 fuse holders.
Provides remote fuse holder status indication.
Suitable for PLCs, alarms and monitoring systems.
Compact accessory with simple installation.
Improves fault detection and maintenance efficiency.
Maintains the modular design of the UltraSafe system.
Ideal for industrial control and automation panels.

Key Features

Mersen UltraSafe™ US14 accessory.
Catalogue number: USMSW1.
Product type: Auxiliary contact kit.
Designed for 1-pole UltraSafe US14 fuse holders.
Remote switching contact.
Compact snap-on accessory.
Suitable for industrial monitoring circuits.
Factory accessory for US14 series.
Package quantity: 1.
Approximate weight: 25 g.

Reliable Remote Monitoring for Fuse Holders

Auxiliary contacts provide an electrical signalling output that changes state when the associated fuse holder operates. This allows automation systems and maintenance personnel to receive immediate notification of equipment status without requiring direct visual inspection.

The Mersen USMSW1 has been developed specifically for the UltraSafe US14 modular fuse holder range, providing a dependable signalling solution for industrial control panels, switchboards and machinery where remote indication is essential.

Typical Applications

Industrial control panels.
PLC monitoring systems.
Machine safety systems.
Power distribution equipment.
OEM machinery.
Automation systems.
Electrical switchboards.
Remote alarm and indication circuits.

Technical Specifications

Series	UltraSafe™ US14
Catalogue number	USMSW1
Reference number	Y227928
Product type	Auxiliary contact kit
Compatible fuse holder	UltraSafe™ US14
Compatible configuration	1-pole
Function	Remote auxiliary contact
Mounting	Direct installation on compatible US14 fuse holder
Application	Remote monitoring and signalling
Package quantity	1
Approximate weight	25 g
Manufacturer	Mersen
Device Type	Accessory
Fuse Type	Cylindrical
Fuse Size	14x51 mm

Frequently Asked Questions

What is the Mersen USMSW1 used for?

The USMSW1 is an auxiliary contact kit used to provide remote status indication for compatible Mersen UltraSafe US14 fuse holders.

Which fuse holders is the USMSW1 compatible with?

The USMSW1 is designed specifically for compatible Mersen UltraSafe™ US14 single-pole modular fuse holders.

Does the USMSW1 provide overcurrent protection?

No. The USMSW1 is an auxiliary signalling accessory and does not provide any fuse or circuit protection.

Can the auxiliary contact be connected to a PLC?

Yes. The auxiliary contact is intended for remote monitoring through PLCs, alarm systems or other industrial control equipment.

Is the USMSW1 supplied with a fuse holder?

No. The USMSW1 is supplied as an accessory kit only. Compatible UltraSafe US14 fuse holders must be ordered separately.

Trusted Industrial Monitoring Accessory

Mersen UltraSafe™ auxiliary contact kits are trusted by panel builders, OEM manufacturers and industrial engineers to provide dependable remote monitoring and signalling for modular fuse holder installations.

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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