High-speed aR characteristic fuse rated at 350A for semiconductor protection with striker indication and slotted blade terminals, suitable for bolted mounting. Rated up to 690VAC IEC and 700VAC UL with a breaking capacity of 200 kA.
£132.34
The Mersen K300136 (A070UD30KI350) is a premium square body high-speed semiconductor fuse designed to provide advanced protection for sensitive power electronic equipment. As part of the proven Mersen Protistor® Size 30 series, this ultra-fast aR fuse delivers reliable protection for diodes, thyristors, IGBTs and MOSFET devices used in demanding industrial power conversion applications.
Engineered for high-performance industrial environments, the K300136 combines rapid fault interruption with low let-through energy to minimise semiconductor damage during short circuits. Its ceramic body, silver-plated contacts and solidified sand construction provide excellent electrical performance, high interrupting capacity and dependable long-term reliability.
With a rated current of 350 A and a 690 V AC IEC / 700 V AC UL voltage rating, the K300136 is ideal for variable speed drives, UPS systems, industrial converters, renewable energy equipment and other high-power electronic installations requiring dependable semiconductor protection.
High-speed semiconductor fuses are designed to interrupt fault currents before expensive power electronic components can be damaged. Their ultra-fast operation and low let-through energy improve equipment reliability, reduce maintenance costs and minimise production downtime in demanding industrial applications.
The Mersen Protistor® Size 30 range is trusted by OEMs and industrial engineers for protecting variable speed drives, converters, UPS systems and renewable energy equipment where dependable semiconductor protection is essential.
| Item number | K300136 |
|---|---|
| Catalogue No | A070UD30KI350 |
| Description | Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 350A With Striker Slotted Blades short |
| EAN/UPC Code | 3605340323818 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 350 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 30 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 86 kA²s |
| Melting I2t | 15.5 kA²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | Slotted Blades |
| Product Width | 40 mm |
| Product Length | 129 mm |
| Product Height | 48 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.873 kg |
| Sell Pack Width | 133 mm |
| Sell Pack Length | 157 mm |
| Sell Pack Height | 54 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.291 kg |
| Power Dissipation at Rated Current Value | 60 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
It provides ultra-fast protection for semiconductor devices including IGBTs, MOSFETs, thyristors and power diodes used in industrial power conversion equipment.
The Mersen K300136 has a 350 A current rating.
The fuse is rated for 690 V AC (IEC) and 700 V AC (UL) operation.
Yes, it incorporates an integrated striker indicator for remote fuse status monitoring.
It is ideal for protecting semiconductors in variable speed drives, UPS systems, industrial converters, renewable energy systems and industrial automation equipment.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs and industrial engineers for delivering reliable protection, high interrupting capacity and dependable performance in demanding power electronic applications.
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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...