High-speed Protistor® fuse with aR characteristic, rated for 550A and up to 1200VAC, featuring a ceramic square body and striker indication system with open slot blades for bolted mounting.
£203.28
The Mersen G300616 (PC71UD11C550EF) is a premium square body high-speed semiconductor fuse engineered to provide rapid protection for sensitive power electronic equipment. Part of the proven Mersen Protistor® Size 71 aR series, it is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices used in industrial power conversion systems.
Featuring an ultra-fast aR operating characteristic, the fuse limits fault energy during short circuits, helping prevent costly damage to semiconductor components. Its solidified sand arc-quenching technology, silver-plated contacts and non-magnetic hardware ensure dependable performance and long service life in demanding industrial environments.
With a 550 A current rating, 1100 V AC IEC / 1200 V AC UL voltage rating and an integrated striker indicator, the G300616 is ideal for industrial drives, UPS systems, renewable energy equipment, converters and other high-power electronic installations.
High-speed semiconductor fuses are designed to interrupt fault currents before excessive thermal energy can damage expensive electronic components. Their ultra-fast response significantly reduces let-through current, helping maximise equipment reliability and minimise downtime.
The Mersen Protistor® range is trusted by OEMs and maintenance engineers worldwide for protecting industrial drives, converters, UPS systems and renewable energy equipment where reliable semiconductor protection is essential.
| Item number | G300616 |
|---|---|
| Catalogue No | PC71UD11C550EF |
| Description | Square Body High-Speed Fuse Protistor® Size 71 aR 1100VAC IEC 1200VAC UL 550A With Striker Open Slot Blades |
| EAN/UPC Code | 3605340331011 |
| Rated voltage AC UL | 1200 V |
| Rated voltage AC IEC | 1100 V |
| Ampere Rating | 550 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 71 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 548 kA²s |
| Melting I2t | 84 kA²s |
| AC Max I.R./Breaking Capacity | I1: 167 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 | 112 W |
| HS Code | 85351000 |
The G300616 is a high-speed semiconductor fuse designed to protect sensitive power electronic devices such as IGBTs, thyristors and rectifiers against damaging short-circuit currents.
This fuse has a 550 A rated current.
The fuse is rated for 1100 V AC (IEC) and 1200 V AC (UL).
The integrated striker provides a mechanical indication when the fuse has operated and can be used with compatible microswitch accessories for remote signalling.
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other semiconductor protection applications.
Mersen Protistor® semiconductor fuses are trusted worldwide for delivering rapid fault interruption, dependable protection and long service life in demanding industrial 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...