High-speed aR characteristic fuse designed for semiconductor protection with bolted mounting, striker indication, and open slot blades. Rated at 250A, 1250VAC IEC, and 1300VAC UL.
£151.99
The Mersen W300606 (PC70UD13C250EF) is a Protistor® Size 70 high-speed square body semiconductor fuse engineered to protect modern power electronic equipment against destructive short-circuit currents. Designed for demanding industrial applications, it delivers ultra-fast fault interruption and excellent current limitation to protect valuable semiconductor devices.
Designed specifically for protecting diodes, thyristors, GTOs and IGBT devices, the W300606 features pure silver fuse elements embedded in solidified sand to achieve low let-through energy (I²t) and high interrupting performance. Silver-plated contact surfaces and non-magnetic hardware provide dependable long-term operation in critical industrial environments.
The W300606 is suitable for OEM equipment, maintenance and replacement applications where identical electrical ratings and mounting arrangements are required. Always verify the complete part number and electrical characteristics before installation.
The Mersen W300606 has been specifically engineered for modern power conversion equipment requiring rapid fault clearance. Its ultra-fast operating characteristic limits thermal and electrical stress before semiconductor devices reach damaging temperatures, helping maximise equipment reliability and minimise costly downtime.
Its robust ceramic square body construction, silver-plated terminals, non-magnetic hardware and high interrupting capability make it an excellent choice for demanding industrial installations.
| Item number | W300606 |
|---|---|
| Catalogue No | PC70UD13C250EF |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 250A With Striker Open Slot Blades |
| EAN/UPC Code | 3605340330915 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 250 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 70 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 77000 A²s |
| Melting I2t | 9580 A²s |
| AC Max I.R./Breaking Capacity | I1: 126 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | Open Slot Blades |
| Product Width | 39.8 mm |
| Product Length | 123.4 mm |
| Product Height | 49.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.074 kg |
| Sell Pack Width | 127 mm |
| Sell Pack Length | 137 mm |
| Sell Pack Height | 65 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.358 kg |
| Power Dissipation at Rated Current Value | 61 W |
| HS Code | 85351000 |
The W300606 is a Protistor® high-speed semiconductor fuse designed to protect IGBTs, thyristors, GTOs and diodes against high-energy short-circuit faults.
The fuse is rated at 250 A with a rated voltage of 1250 VAC (IEC) and 1300 VAC (UL), featuring an ultra-fast aR operating characteristic and an interrupt rating of up to 150 kA AC.
The W300606 features open slot blade (EF) terminals together with an integrated striker indicator for local indication or optional microswitch operation.
Typical applications include industrial drives, converters, rectifiers, inverters, UPS systems and other high-power semiconductor equipment.
Only a fuse with identical electrical ratings, body size, mounting arrangement and semiconductor protection characteristics should be used as a replacement.
Mersen Protistor® high-speed semiconductor fuses are trusted worldwide for protecting critical power electronic equipment with rapid fault interruption, low let-through energy and high interrupting capacity.
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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...