MERSEN FUSE 5 URB 000 BS 88/350 5URB000BS88/350

MERSEN FUSE 5 URB 000 BS 88/350 5URB000BS88/350

High-speed fuse for semiconductor protection with 350A rating, 500VAC, L bracket terminals, ceramic body, and IEC compliance.

SKU: X330116Alt SKU: BS000UB50V350MPN: X330116
Price
List Price £54.58 ex VAT
Your Price (ex VAT)
£54.58
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.

SUBTOTAL (EX VAT) £54.58
Trade pricing is personalised to your account

Manufacturer Lead Time

Sold in packs of 3

£54.58

Why Choose the Mersen X330116 High Speed Fuse?

The Mersen X330116 is a premium Protistor® square body high speed semiconductor fuse engineered to provide exceptional protection for power electronic equipment, converters, drives and semiconductor devices. Designed by Mersen, a global specialist in electrical power and advanced circuit protection, this fuse delivers ultra-fast fault interruption to minimise damage caused by short circuits and overcurrent conditions.

As part of the renowned Protistor® NH 000 aR fuse range, the X330116 has been specifically developed to protect IGBTs, thyristors, diodes and other semiconductor components used in industrial automation and power conversion applications. Its advanced construction provides low let-through energy (I²t), high breaking capacity and reliable performance in demanding industrial environments.

With a 350 A current rating and 500 V AC IEC voltage rating, the Mersen X330116 is ideally suited to industrial drives, UPS systems, renewable energy equipment and power conversion systems requiring dependable semiconductor protection.

Key Advantages

  • High speed Protistor® semiconductor protection fuse.
  • 350 A current rating for demanding industrial applications.
  • 500 V AC IEC rated voltage.
  • aR operating characteristic provides protection for power semiconductors.
  • High breaking capacity for dependable short circuit protection.
  • Ideal for variable speed drives, converters and industrial power electronics.

Key Features

  • Mersen Protistor® series.
  • Model X330116 (BS000UB50V350).
  • Square body NH 000 high speed fuse.
  • 350 A rated current.
  • 500 V AC IEC rated voltage.
  • aR ultra-fast semiconductor protection characteristic.
  • L bracket terminals.
  • Silver-plated contact surfaces for reliable conductivity.
  • Suitable for protecting diodes, thyristors and IGBT modules.

Reliable Protection for Power Electronics

High speed semiconductor fuses are specifically designed to interrupt fault currents before sensitive electronic components suffer thermal damage. The Mersen X330116 offers extremely rapid fault clearing, helping maximise the reliability and operational life of converters, drives and industrial power systems.

Its robust square body construction, silver-plated contacts and advanced arc control technology make it an ideal solution for modern industrial automation, renewable energy installations and heavy-duty electrical equipment where dependable semiconductor protection is essential.

Typical Applications

  • Variable frequency drives (VFDs).
  • Industrial power converters.
  • UPS systems.
  • IGBT and thyristor protection.
  • Renewable energy inverters.
  • Industrial automation and control panels.

Technical Specifications

Item number X330116
Catalogue No BS000UB50V350
Description Square Body High-Speed Fuse Protistor® Size NH 000 aR 500VAC IEC 350A L Brackets
EAN/UPC Code 3605340362015
Rated voltage AC UL 500 V
Rated voltage DC UL 320 V
Rated voltage AC IEC 500 V
Ampere Rating 350 A
RoHS Compliant Yes
AC or DC AC
Speed/Characteristic aR
Fuse Size NH000
Mounting Bolted
Clearing I2t At Rated Voltage 110000 A²s
Melting I2t 22400 A²s
AC Max I.R./Breaking Capacity I1: 120 kA
Connection/Terminal Material Tin-Plated Copper
Connection/Terminal Type L Brackets
Product Width 36 mm
Product Length 94 mm
Product Height 22.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 0.423 kg
Sell Pack Width 110 mm
Sell Pack Length 130 mm
Sell Pack Height 80 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 0.141 kg
Power Dissipation at Rated Current Value 58 W
HS Code 85361090
Country of Manufacture Tunisia
Fuse Type BS88, Semiconductor
Fuse Size NH000
Fuse Class aR
Voltage 500 V

Frequently Asked Questions

What is the Mersen X330116 used for?

The X330116 is a high speed semiconductor fuse designed to protect power electronic equipment including drives, converters, inverters and IGBT-based systems.

What is the current rating of the X330116?

This fuse has a 350 A current rating.

What voltage is the X330116 rated for?

The fuse is rated for 500 V AC IEC operation and is suitable for demanding industrial power systems.

What type of protection does the fuse provide?

The aR operating characteristic provides ultra-fast protection for semiconductor devices such as diodes, thyristors and IGBT modules.

Where is the Mersen X330116 typically installed?

It is commonly installed in industrial drives, converters, UPS equipment, renewable energy systems and electrical control panels requiring semiconductor protection.

Trusted by Industrial Engineers Worldwide

Mersen Protistor® semiconductor fuses are trusted by OEMs, panel builders and maintenance engineers worldwide for delivering fast fault protection, high reliability and dependable performance in critical industrial power applications.

● 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?

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.

What are your delivery times and costs?

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.

What about warranties, returns and faulty items?

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.

● 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…

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

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

LED Controls: Danfoss Drives Authorised Partner

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

LED Controls: Your Complete Control Panel Solution

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...