High-speed fuse delivering rapid circuit protection with a 400A rating, supporting up to 1250VAC IEC and 1300VAC UL standards. Features an open slot blade design with integrated striker for easy installation and clear fuse status indication.
£181.01
The Mersen D300613 is a premium Protistor® square body high-speed semiconductor fuse designed to provide exceptional protection for sensitive power electronic devices operating in demanding industrial environments. Engineered for rapid fault interruption, this aR ultra-fast fuse safeguards IGBTs, thyristors, diodes and other semiconductor components against damaging short-circuit currents.
Part of the trusted Mersen Protistor® Size 71 series, the D300613 delivers outstanding electrical performance with low let-through energy and a high breaking capacity. Its square body construction with open slot blade terminals and integrated striker indicator ensures reliable installation and simplified maintenance across industrial power conversion equipment.
Featuring a 400 A current rating and a 1250 V AC IEC / 1300 V AC UL voltage rating, the D300613 is ideally suited for industrial drives, renewable energy systems, UPS equipment, converters and heavy-duty motor control applications where reliable semiconductor protection is essential.
High-speed semiconductor fuses are specifically designed to minimise the energy released during short-circuit faults, protecting valuable electronic components before damage can occur. Their rapid operation improves equipment reliability while reducing maintenance costs and production downtime.
The Mersen Protistor® Size 71 range is widely specified for industrial automation, renewable energy systems, UPS installations and heavy-duty power conversion equipment where dependable semiconductor protection is essential.
| Item number | D300613 |
|---|---|
| Catalogue No | PC71UD13C400EF |
| Description | Square Body High-Speed Fuse Protistor® Size 71 aR 1250VAC IEC 1300VAC UL 400A With Striker Open Slot Blades |
| EAN/UPC Code | 3605340330984 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 400 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 71 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 308 kA²s |
| Melting I2t | 38 kA²s |
| 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 | 51 mm |
| Product Length | 149.4 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.62 kg |
| Sell Pack Width | 140 mm |
| Sell Pack Length | 174 mm |
| Sell Pack Height | 71 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.54 kg |
| Power Dissipation at Rated Current Value | 80 W |
| HS Code | 85351000 |
The D300613 protects semiconductor devices including IGBTs, thyristors and diodes from damaging short-circuit currents in industrial power electronic equipment.
The Mersen D300613 has a 400 A rated current.
It is rated for 1250 V AC (IEC) and 1300 V AC (UL).
Yes. The fuse incorporates an integrated striker indicator to assist with maintenance and fault identification.
It is commonly installed in industrial drives, power converters, renewable energy equipment, UPS systems and other semiconductor-based electrical installations.
Mersen Protistor® semiconductor fuses are trusted by electrical engineers, machine builders and industrial manufacturers worldwide for dependable protection of high-value 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...