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MERSEN FUSE 10 URD 73 EF 0900 10URD73EF0900
The PC73UD10C900EF high-speed fuse is engineered for precise circuit protection in demanding industrial and power electronics applications. Certified to IEC and UL standards, it offers up to 1000VAC (IEC) and 1100VAC (UL) and a 900A current rating, delivering superior safety and rapid fault interruption.
£184.92
Why Choose the Mersen E300637 Protistor® High-Speed Fuse?
The Mersen E300637, catalogue number PC73UD10C900EF, is a premium square body high-speed semiconductor fuse engineered to provide ultra-fast protection for modern high-voltage power electronic equipment. As part of the trusted Mersen Protistor® Size 73 series, this fuse is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short circuits and fault currents. Featuring open slot blade terminals and an integrated striker indicator, it delivers exceptional performance in demanding industrial applications.
Designed for maximum flexibility in power conversion systems, the E300637 incorporates precision die-cut fuse elements embedded in solidified silica sand, together with silver-plated contact surfaces and non-magnetic hardware. This advanced construction provides exceptionally low let-through energy (I²t), excellent current limiting performance and reliable long-term protection for valuable semiconductor devices.
With a 900 A current rating, 1000 V AC IEC rating and 1100 V AC UL rating, the Mersen E300637 is ideally suited for renewable energy systems, industrial motor drives, high-power converters, UPS installations and heavy-duty automation equipment requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 900 A current rating for high-power industrial applications.
- 1000 V AC IEC / 1100 V AC UL voltage rating.
- Provides dependable protection for IGBTs, thyristors and diode modules.
- Low I²t characteristics help minimise equipment damage.
- Open slot blade terminals enable secure high-current connections.
Key Features
- Mersen Protistor® Size 73 series.
- 900 A rated current.
- 1000 V AC IEC / 1100 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Open slot blade terminals.
- Integrated striker indicator for remote fuse monitoring.
- High interrupting capacity.
- Silver-plated contacts with non-magnetic hardware.
- RoHS compliant.
Reliable Protection for High-Voltage Power Electronics
High-speed semiconductor fuses are engineered to interrupt fault currents before sensitive semiconductor devices can be damaged. The Mersen Protistor® Size 73 range delivers exceptionally fast fault clearing with low I²t values, making it ideal for protecting modern high-voltage power conversion equipment while improving reliability and reducing costly downtime.
The E300637 is widely used in renewable energy systems, industrial drives, high-power converters, UPS systems and heavy industrial automation equipment where dependable semiconductor protection is essential for safe, continuous operation.
Typical Applications
- High-voltage variable frequency drives.
- Renewable energy inverter systems.
- Battery energy storage systems (BESS).
- Industrial power converters.
- UPS and standby power systems.
- Heavy industrial automation equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1000 V | |
| Item number | E300637 | |
| Catalogue No | PC73UD10C900EF | |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1000VAC IEC 1100VAC UL 900A With Striker Open Slot Blades | |
| EAN/UPC Code | 3605340331417 | |
| Rated voltage AC UL | 1100 V | |
| Rated voltage AC IEC | 1000 V | |
| Ampere Rating | 900 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 73 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1440 kA²s | |
| Melting I2t | 250 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 | 73 mm | |
| Product Length | 149.4 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.11 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 180 mm | |
| Sell Pack Height | 80 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.11 kg | |
| Power Dissipation at Rated Current Value | 170 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen E300637 used for?
The E300637 provides ultra-fast protection for semiconductor devices including IGBTs, thyristors and diodes used in high-voltage power conversion equipment.
What is the current rating of this fuse?
The Mersen E300637 has a 900 A rated current.
What voltage is the fuse designed for?
It is rated for 1000 V AC (IEC) and 1100 V AC (UL) applications.
What type of terminals does this fuse use?
The fuse features open slot blade terminals with an integrated striker indicator for secure installation and convenient remote monitoring.
Where is this fuse commonly installed?
It is commonly installed in renewable energy systems, industrial drives, converters, UPS systems and other high-voltage power electronic installations.
Trusted for Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers to deliver dependable protection for critical power electronic equipment operating in demanding industrial environments.
