High-performance Protistor® fuse-link for semiconductor protection rated at 690V AC and 85A with fast-acting aR characteristic and bolted mounting.
£89.24
The Mersen H075907 is a Protistor® high-speed semiconductor fuse designed to provide fast and dependable protection for sensitive power electronic equipment. Manufactured to BS88-4 standards, this fuse carries the catalogue reference BS217UT69V85 and is engineered to protect semiconductor devices against damaging overloads and short-circuit faults.
This model is a 2 × 17 × 49 mm gR class fuse with a rated current of 85 A and a 690 V AC IEC rating. The gR operating class provides full-range semiconductor protection, making it suitable for safeguarding IGBTs, thyristors, diodes, rectifiers and other sensitive power electronic components.
Designed for demanding industrial environments, the Mersen H075907 delivers high breaking capacity and excellent current-limiting performance, helping minimise equipment damage and reduce costly downtime in power conversion and automation systems.
High-speed semiconductor fuses are specifically designed to protect sensitive power electronic devices much faster than conventional industrial fuses. Their current-limiting characteristics help minimise thermal and mechanical stress on semiconductor components, improving equipment reliability and extending service life.
The Mersen H075907 is ideally suited to protecting industrial drives, inverters, converters, UPS systems, rectifiers and other power electronic equipment where dependable semiconductor protection is essential.
| Item number | H075907 |
|---|---|
| Catalogue No | BS217UT69V85 |
| Description | British Standard fuse-link Protistor® 2x17x49 gR 690V AC UL 85A |
| EAN/UPC Code | 3605340012903 |
| Rated voltage AC UL | 700 V |
| Rated voltage DC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 85 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 2x17x49 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 4350 A²s |
| Melting I2t | 430 A²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Connection/Terminal Material | Copper |
| Connection/Terminal Type | L Brackets |
| Product Width | 36.7 mm |
| Product Length | 90.2 mm |
| Product Height | 18.5 mm |
| Sell Pack Quantity | 5 EA |
| Sell Pack Weight | 0.414 kg |
| Sell Pack Width | 103 mm |
| Sell Pack Length | 195 mm |
| Sell Pack Height | 24 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.0828 kg |
| Power Dissipation at Rated Current Value | 21.9 W |
| HS Code | 85361090 |
| Country of Manufacture | India |
The Mersen H075907 is a high-speed semiconductor fuse designed to protect power electronic equipment from overload and short-circuit faults.
The H075907 has a rated current of 85 A.
The fuse is rated at 690 V AC (IEC) and 700 V AC/DC (UL).
gR fuses provide full-range semiconductor protection, offering both overload and short-circuit protection for sensitive semiconductor devices.
The fuse is manufactured to BS88-4 and IEC 60269 semiconductor fuse standards and is UL Recognised.
Mersen Protistor® semiconductor fuses are trusted worldwide by machine builders, panel manufacturers and industrial maintenance professionals to protect critical power electronic equipment.
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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.
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...
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...