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MERSEN FUSE 6,9 URD 33 E F 0900 6,9URD33EF0900
High-speed fuse with 900A rating, suitable for semiconductor protection in industrial applications, featuring integrated striker indication and open slot blade terminals.
£145.58
Why Choose the Mersen E300223 Protistor® High Speed Fuse?
The Mersen E300223, catalogue number PC33UD69V900EF, is a premium square body high speed semiconductor fuse engineered to provide ultra-fast protection for modern power electronic equipment. As part of the trusted Mersen Protistor® Size 33 series, this fuse is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices from damaging short circuits and fault currents.
Designed for demanding industrial environments, the E300223 delivers exceptional current limiting performance with low let-through energy, helping minimise damage to expensive equipment and maximise system uptime. Precision die-cut fuse elements embedded in solidified sand, combined with silver-plated contact surfaces and non-magnetic hardware, provide dependable long-term protection for critical power conversion systems.
With a 900 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the Mersen E300223 is ideally suited for variable frequency drives, UPS systems, converters, rectifiers, renewable energy installations and industrial automation equipment requiring reliable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 900 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Provides dependable protection for IGBTs, thyristors and diode modules.
- Low I²t characteristics help minimise equipment damage.
- Robust square body construction with silver-plated contacts.
Key Features
- Mersen Protistor® Size 33 series.
- 900 A rated current.
- 690 V AC IEC / 700 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Square body fuse with open slot blade terminals.
- Integrated striker indicator for remote status indication.
- 200 kA breaking capacity.
- RoHS compliant construction.
Reliable Protection for Industrial Power Electronics
High speed semiconductor fuses are designed to interrupt fault currents before expensive power electronic components can be damaged. The Mersen Protistor® range delivers exceptionally fast fault clearing with low I²t values, making it ideal for protecting modern power conversion equipment while improving equipment reliability and reducing downtime.
The E300223 is widely used in industrial motor drives, renewable energy systems, power converters and automation equipment, delivering dependable protection for critical semiconductor devices operating in demanding industrial environments.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and standby power systems.
- Renewable energy inverter systems.
- Industrial automation and OEM machinery.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | E300223 | |
| Catalogue No | PC33UD69V900EF | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 900A With Striker Open Slot Blades | |
| EAN/UPC Code | 3605340325195 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 900 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 770 kA²s | |
| Melting I2t | 130 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Standard Terminal | |
| 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 | 126 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.556 kg | |
| Sell Pack Width | 160 mm | |
| Sell Pack Length | 245 mm | |
| Sell Pack Height | 100 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.852 kg | |
| Power Dissipation at Rated Current Value | 135 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen E300223 used for?
The E300223 provides ultra-fast protection for semiconductor devices including IGBTs, thyristors and diodes used in industrial power conversion equipment.
What is the current rating of this fuse?
The Mersen E300223 has a 900 A rated current.
What voltage is the fuse designed for?
It is rated for 690 V AC (IEC) and 700 V AC (UL) applications.
What does the aR operating characteristic mean?
The aR operating class provides partial-range ultra-fast protection specifically designed for semiconductor devices against short-circuit faults.
Where is this fuse commonly installed?
It is commonly installed in variable speed drives, converters, UPS systems, renewable energy equipment and industrial 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 in demanding industrial environments.
