High-speed fuse designed for semiconductor protection up to 1800A at 1100VAC with striker indication and flush ends for bolted mounting.
£634.69
The Mersen S302236 is a high-performance Protistor® square body high-speed semiconductor fuse developed to provide exceptional short-circuit protection for sensitive power electronic devices. Designed for demanding industrial applications, this aR class ultra-fast fuse protects IGBTs, diodes, thyristors and other semiconductor components from damaging fault currents while helping maximise equipment uptime.
As part of the trusted Mersen Protistor® Size 32 series, the S302236 is engineered for use in variable frequency drives, UPS systems, power converters, industrial motor drives and renewable energy equipment. Its square body construction with silver-plated contacts provides dependable electrical performance and long service life in demanding operating environments.
Featuring a 400 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the S302236 delivers rapid fault interruption with a high breaking capacity, helping protect valuable semiconductor equipment from catastrophic failure.
The Mersen S302236 is engineered to clear high fault currents rapidly before they can damage expensive semiconductor devices. Its ultra-fast operating characteristics and low I²t performance make it an excellent choice for protecting modern power conversion equipment.
Widely specified by machine builders, panel manufacturers and automation engineers, the Protistor® range delivers dependable protection for critical industrial applications where reliability and performance are essential.
| Item number | S302236 |
|---|---|
| Catalogue No | PC273UD11C18CTF |
| Description | Square Body High-Speed Fuse Protistor® 2x73 aR 1100VAC IEC 1800A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340351934 |
| Rated voltage AC IEC | 1100 V |
| Ampere Rating | 1800 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 2x73 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 6300 kA²s |
| Melting I2t | 1000 kA²s |
| AC Max I.R./Breaking Capacity | I1: 100 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 167 mm |
| Product Length | 91 mm |
| Product Height | 78.5 mm |
| Sell Pack Quantity | 1 EA |
| Sell Pack Weight | 2.53 kg |
| Sell Pack Width | 90 mm |
| Sell Pack Length | 205 mm |
| Sell Pack Height | 95 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 2.53 kg |
| Power Dissipation at Rated Current Value | 315 W |
| HS Code | 85351000 |
| Country of Manufacture | France |
The S302236 is designed to protect semiconductor devices including IGBTs, thyristors and diodes used in industrial power electronic equipment.
This fuse has a 400 A current rating.
It is rated for 690 V AC (IEC) and 700 V AC (UL).
It is an aR ultra-fast square body semiconductor fuse designed specifically for short-circuit protection of sensitive power electronic devices.
The fuse is commonly installed in industrial drives, power converters, UPS systems, renewable energy equipment and automation control panels.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs and industrial engineers to provide reliable, high-speed protection for critical semiconductor 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...