The A055UD32TTI1400 fuse is engineered for reliable protection of sensitive semiconductor equipment, featuring rapid fault response at high current ratings up to 1400A and dual voltage compliance (500VAC IEC, 550VAC UL). Its square body design enables easy integration into dense assemblies, while the incorporated striker mechanism enhances circuit safety and expedites fault indication.
£316.05
The Mersen P301083 is a premium Protistor® Size 32 high-speed semiconductor fuse engineered to provide ultra-fast protection for modern power conversion equipment. Designed for demanding industrial environments, it safeguards diodes, thyristors and IGBT devices against damaging short-circuit faults while helping maximise equipment reliability and minimise costly downtime.
Part of the Mersen Protistor® Size 32 series, the P301083 features a robust square ceramic body with flush ends, UNC threaded terminals and an integrated striker indicator. Precision silver fuse elements embedded in solidified sand provide excellent current limitation, exceptionally low let-through energy and high interrupting performance for demanding semiconductor protection applications.
Rated at 1400 A with a 500 V AC (IEC) / 550 V AC (UL) voltage rating, the P301083 is ideally suited to industrial drives, UPS systems, converters, renewable energy equipment and other high-power electrical installations requiring dependable semiconductor protection.
The Mersen P301083 has been developed for demanding power conversion equipment where semiconductor devices require extremely rapid fault clearance. Its low I²t characteristics help minimise thermal stress during fault conditions, reducing the risk of expensive component failures while extending equipment service life.
Suitable for OEM installations and maintenance replacements, the P301083 provides dependable protection in industrial environments where high-speed semiconductor protection is essential for safe and reliable operation.
| Item number | P301083 |
|---|---|
| Catalogue No | A055UD32TTI1400 |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 500VAC IEC 550VAC UL 1400A With Striker Flush ends UNC threads |
| EAN/UPC Code | 3605340336580 |
| Rated voltage AC UL | 550 V |
| Rated voltage AC IEC | 500 V |
| Ampere Rating | 1400 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 32 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 2300 kA²s |
| Melting I2t | 555 kA²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Design Details | Reinforced Terminal |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 59 mm |
| Product Length | 50.6 mm |
| Product Height | 65 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.8099 kg |
| Sell Pack Width | 145 mm |
| Sell Pack Length | 245 mm |
| Sell Pack Height | 90 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.6033 kg |
| Power Dissipation at Rated Current Value | 160 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The P301083 is an ultra-fast semiconductor fuse designed to protect diodes, thyristors and IGBT devices against short-circuit and overcurrent faults.
The Mersen P301083 has a continuous current rating of 1400 A.
The fuse is rated at 500 V AC (IEC) and 550 V AC (UL).
Yes. It incorporates an integrated striker indicator that can operate a compatible microswitch for remote fault indication and simplified maintenance.
The P301083 is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other semiconductor-based power conversion systems.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, electrical engineers and industrial maintenance teams for dependable protection of high-value power electronic equipment.
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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...