High-speed aR characteristic fuse designed for semiconductor protection with 690VAC IEC and 700VAC UL ratings at 160A, featuring a striker with flush ends and metric threads for secure installation.
£96.68
The Mersen M300299, catalogue number PC31UD69V160TF, is a premium square body ultra-fast semiconductor fuse engineered to protect sensitive power electronic devices against damaging short circuits. As part of the renowned Mersen Protistor® semiconductor fuse range, it delivers rapid fault interruption for industrial drives, power converters, UPS systems and other demanding applications requiring reliable semiconductor protection.
Designed with a 690 V AC (IEC) / 700 V AC (UL) voltage rating and a 160 A current rating, this aR class fuse provides exceptional protection for IGBTs, thyristors, diodes and similar semiconductor components. Its low let-through energy helps minimise damage to expensive equipment while improving system reliability.
Featuring a Size 31 square body design with flush end metric threaded terminals and an integrated striker indicator, the M300299 enables straightforward installation into compatible fuse holders and monitoring systems used throughout industrial power distribution equipment.
Semiconductor fuses are specifically engineered to interrupt fault currents before they can damage costly electronic components. Their ultra-fast response limits energy let-through, helping protect IGBTs, SCRs, diodes and power modules used in modern industrial equipment.
The Mersen M300299 combines rapid fault clearance, robust square body construction and dependable performance, making it an excellent choice for industrial automation, motor control and power conversion systems where equipment protection is critical.
| Item number | M300299 |
|---|---|
| Catalogue No | PC31UD69V160TF |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 160A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340326437 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 160 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 31 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 7700 A²s |
| Melting I2t | 1300 A²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 51 mm |
| Product Length | 50.6 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.1478 kg |
| Sell Pack Width | 85 mm |
| Sell Pack Length | 168 mm |
| Sell Pack Height | 65 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.3826 kg |
| Power Dissipation at Rated Current Value | 35 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The M300299 protects sensitive semiconductor devices including IGBTs, thyristors and diodes from damaging short circuit faults in industrial power electronic systems.
The fuse has a 160 A rated current.
The fuse is rated for 690 V AC (IEC) and 700 V AC (UL) applications.
The aR operating class is intended for ultra-fast short circuit protection of semiconductor devices while allowing overload protection to be provided elsewhere in the electrical system.
The M300299 is widely used in industrial automation, power conversion, renewable energy, UPS systems, motor drives and OEM machinery.
Mersen Protistor® semiconductor fuses are trusted worldwide by electrical engineers, panel builders and equipment manufacturers to deliver dependable protection for critical industrial power electronics.
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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...