High-performance Protistor® fuse with aR characteristic, 550A rating, ceramic body, integrated striker indication, suitable for semiconductor protection in industrial applications.
£161.35
The Mersen E300016 (catalogue number PC31UD69V550A) is a Protistor® Size 31 square body high-speed semiconductor fuse engineered to provide ultra-fast protection for modern power electronic equipment. Featuring an aR ultra-fast operating characteristic, it is specifically designed to protect sensitive semiconductor devices such as IGBTs, thyristors and diodes against damaging short-circuit currents.
Rated at 550A, with a 690VAC (IEC) and 700VAC (UL) voltage rating, the E300016 delivers exceptional current-limiting performance and a high 200kA interrupting rating. Its square ceramic body incorporates DIN 80 blade terminals, silver-plated contact surfaces and robust construction for dependable operation in demanding industrial environments.
Manufactured by Mersen, a global leader in electrical protection, the E300016 forms part of the renowned Protistor® range, trusted worldwide for protecting critical power conversion equipment whilst reducing downtime and minimising damage to expensive semiconductor components.
Protistor® semiconductor fuses are engineered to interrupt fault currents before sensitive power electronic devices suffer irreversible damage. Their low let-through energy helps reduce thermal stress, extend equipment life and minimise maintenance costs in demanding industrial installations.
The Mersen E300016 is ideally suited to industrial drives, converters, UPS systems, renewable energy installations and other high-power semiconductor applications where dependable fault protection is essential.
| Current | 08 A |
|---|---|
| Item number | E300016 |
| Catalogue No | PC31UD69V550A |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 550A With Striker DIN 80 Blades |
| EAN/UPC Code | 3605340322408 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 550 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 31 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 310000 A²s |
| Melting I2t | 52000 A²s |
| 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 | DIN 80 Blades |
| Product Width | 51 mm |
| Product Length | 110 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.1598 kg |
| Sell Pack Width | 143 mm |
| Sell Pack Length | 167 mm |
| Sell Pack Height | 64 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.3866 kg |
| Power Dissipation at Rated Current Value | 75 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The Mersen E300016 is a high-speed semiconductor fuse designed to protect IGBTs, thyristors, diodes and other power semiconductor devices against damaging short-circuit currents.
The fuse is rated at 690VAC (IEC) and 700VAC (UL).
The Mersen E300016 has a continuous current rating of 550A.
It is a Protistor® Size 31 square body aR ultra-fast semiconductor protection fuse with DIN 80 blade terminals.
Typical applications include industrial drives, power converters, renewable energy systems, UPS equipment and other high-power semiconductor installations.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers to provide dependable protection for critical power electronic systems operating in demanding industrial environments.
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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...