High-speed aR fuse with integrated striker for semiconductor protection, rated 800A at 1000VAC IEC and 1100VAC UL, featuring ceramic body and plain blade terminals.
£275.22
The Mersen M302047, catalogue number PC72UD10C800PA, is a premium Protistor® Size 72 square body high-speed semiconductor fuse designed to deliver ultra-fast short-circuit protection for modern power electronic equipment. Engineered specifically for semiconductor applications, it protects IGBTs, thyristors, diodes and other sensitive semiconductor devices against damaging fault currents.
Featuring an 800 A current rating, 1000 V AC IEC / 1100 V AC UL voltage rating and an aR operating class, the M302047 provides exceptional current-limiting performance with very low let-through energy. Its robust ceramic square body construction and high interrupting capacity make it ideal for demanding industrial applications including power converters, motor drives and renewable energy systems.
The fuse incorporates a Size 72 square body design with plain blade terminals, silver-plated contacts and an integrated striker indicator, allowing straightforward installation and optional remote indication using compatible microswitches.
Protistor® semiconductor fuses are engineered to interrupt fault currents before they can damage costly semiconductor devices. Their ultra-fast operation reduces thermal stress, improves equipment reliability and minimises downtime in critical industrial power systems.
The Mersen M302047 is ideally suited for industrial automation, renewable energy systems, UPS installations and high-power conversion equipment where dependable semiconductor protection is essential.
| Item number | M302047 |
|---|---|
| Catalogue No | PC72UD10C800PA |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1000VAC IEC 1100VAC UL 800A With Striker Plain Blades |
| EAN/UPC Code | 3605340350036 |
| Rated voltage AC UL | 1100 V |
| Rated voltage AC IEC | 1000 V |
| Ampere Rating | 800 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 1240 kA²s |
| Melting I2t | 215.1 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 | 59 mm |
| Product Length | 149.4 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.3298 kg |
| Sell Pack Width | 160 mm |
| Sell Pack Length | 202 mm |
| Sell Pack Height | 80 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.7766 kg |
| Power Dissipation at Rated Current Value | 146 W |
| HS Code | 85361090 |
The M302047 is an ultra-fast semiconductor fuse designed to protect IGBTs, thyristors, diodes and other semiconductor devices from damaging short-circuit faults.
The fuse has a rated current of 800 A.
It is rated for 1000 V AC (IEC) and 1100 V AC (UL).
The aR operating class provides ultra-fast short-circuit protection specifically for semiconductor devices and must be used alongside suitable overload protection.
The integrated striker provides mechanical indication when the fuse operates and can be used with compatible microswitches for remote monitoring.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and maintenance engineers for protecting critical power electronic equipment in demanding industrial environments.
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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...