Call Us Today
01706 242050
Trade Portal
MERSEN FUSE 10 URD 73 PA 0900 PC73UD10C900PA

MERSEN FUSE 10 URD 73 PA 0900 PC73UD10C900PA

The PC73UD10C900PA fuse provides rapid fault response and reliable protection for power semiconductor devices with a 900A rating and aR characteristic at 1000VAC IEC and 1100VAC UL.

SKU: F302685Alt SKU: PC73UD10C900PAMPN: F302685
Price
List Price £305.56 ex VAT
Your Price (ex VAT)
£305.56
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.

Sign up for a trade account Quick & easy setup
SUBTOTAL (EX VAT) £305.56
Trade pricing is personalised to your account

Manufacturer Lead Time

Sold in packs of 3

£305.56

Why Choose the Mersen F302685 Protistor® High Speed Fuse?

The Mersen F302685 is a genuine Protistor® square body high speed semiconductor fuse engineered to provide exceptional protection for modern power electronic equipment. Designed for demanding industrial applications, this fuse delivers rapid fault interruption to safeguard semiconductor devices including IGBTs, thyristors and diodes used in power conversion systems.

Part of the renowned Mersen Protistor® Size 73 aR series, the F302685 offers reliable protection for high-power industrial equipment operating at up to 1000 V AC IEC and 1100 V AC UL. Its ultra-fast operating characteristics help minimise damage during short circuit conditions, reducing downtime and protecting valuable equipment investments.

Supplied under manufacturer part number F302685 and catalogue number PC73UD10C900PA, this fuse features plain blade terminals with an integrated striker mechanism, making it suitable for OEM installations, industrial maintenance and replacement applications where the original Mersen specification is required.

Key Advantages

  • Genuine Mersen Protistor® high speed semiconductor fuse.
  • 900 A current rating for high-power industrial applications.
  • 1000 V AC IEC / 1100 V AC UL rated operation.
  • Ultra-fast aR operating characteristic for semiconductor protection.
  • Integrated striker for fuse indication and monitoring.
  • Designed to reduce equipment damage and minimise downtime.

Key Features

  • Mersen Protistor® Size 73 series.
  • Model F302685.
  • Catalogue number PC73UD10C900PA.
  • 900 A rated current.
  • 1000 V AC IEC / 1100 V AC UL.
  • Square body fuse with plain blade terminals.
  • Integrated striker indication.
  • Silver-plated contacts for reliable electrical performance.

Advanced Protection for Power Conversion Equipment

High speed semiconductor fuses are specifically designed to protect sensitive electronic power devices that require extremely rapid fault clearance. Their low let-through energy helps protect expensive semiconductor assemblies while maintaining system reliability and operational safety.

The Mersen Protistor® range is widely specified in industrial drives, renewable energy systems, UPS equipment and power converters where dependable semiconductor protection is essential for continuous operation.

Typical Applications

  • Variable frequency drives (VFDs).
  • Industrial power converters.
  • Motor drives and soft starters.
  • Renewable energy inverters.
  • UPS systems.
  • Semiconductor protection in industrial automation.

Technical Specifications

Item number F302685
Catalogue No PC73UD10C900PA
Description Square Body High-Speed Fuse Protistor® Size 73 aR 1000VAC IEC 1100VAC UL 900A With Striker Plain Blades
EAN/UPC Code 3605340355239
Rated voltage AC UL 1100 V
Rated voltage AC IEC 1000 V
Ampere Rating 900 A
AC or DC AC
Speed/Characteristic aR
Fuse Size 73
Mounting Clip
Clearing I2t At Rated Voltage 1440 kA²s
Melting I2t 250 kA²s
AC Max I.R./Breaking Capacity I1: 167 kA
Indication System Yes
Indication System Type Striker
Connection/Terminal Material Silver-Plated Copper
Connection/Terminal Type Plain Blades
Product Width 73 mm
Product Length 149.4 mm
Product Height 78.5 mm
Sell Pack Quantity 3 EA
Sell Pack Weight 3.48 kg
Sell Pack Width 160 mm
Sell Pack Length 245 mm
Sell Pack Height 100 mm
Product group Semiconductor Protection Fuses
Body/Insulating Material Ceramic
Product Weight 1.16 kg
Power Dissipation at Rated Current Value 170 W
HS Code 85361090
Fuse Type Semiconductor
Fuse Class aR
Voltage 1000 V

Frequently Asked Questions

What is the Mersen F302685 used for?

The Mersen F302685 is a high speed semiconductor fuse designed to protect IGBTs, thyristors, diodes and other power electronic devices from short circuit faults.

What is the current rating of this fuse?

The fuse has a 900 A current rating for demanding industrial power applications.

What voltage is the F302685 rated for?

It is rated for 1000 V AC (IEC) and 1100 V AC (UL).

What does the aR fuse characteristic mean?

The aR characteristic provides ultra-fast protection specifically for semiconductor devices while allowing normal equipment operation.

Which industries commonly use this fuse?

This fuse is commonly installed in industrial automation, power conversion, renewable energy, motor drive and heavy electrical equipment.

Trusted by Power Electronics Professionals

Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, automation engineers and maintenance professionals to provide dependable protection for critical power electronic equipment.

● 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…

by | Aug 11, 2026 |

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

by | Jan 17, 2026 |

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

by | Jan 17, 2026 |

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...