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MERSEN FUSE A 070 URD 33 LI 0800 A070URD33LI0800
High-speed 800A Protistor® fuse with striker indication and slotted blade terminals for semiconductor protection at 690VAC IEC and 700VAC UL ratings.
£132.16
Why Choose the Mersen P300232 Protistor® High-Speed Fuse?
The Mersen P300232 is a premium Protistor® Size 33 high-speed semiconductor fuse engineered to deliver ultra-fast protection for sensitive power electronic equipment. Designed specifically for industrial applications, it safeguards diodes, thyristors, IGBTs and other semiconductor devices from damaging short-circuit and overcurrent conditions while helping maximise equipment reliability and minimise downtime.
As part of the advanced Mersen Protistor® Size 33 series, the P300232 combines high interrupting capacity with exceptionally low let-through energy, making it an ideal solution for variable speed drives, UPS systems, power converters, inverters and industrial automation equipment. Silver-plated contacts and robust square body construction ensure dependable long-term performance in demanding electrical environments.
With a rated current of 800 A and a 690 V AC IEC / 700 V AC UL voltage rating, the P300232 features long slotted blade terminals with an integrated striker indicator for straightforward installation and maintenance in industrial power distribution and semiconductor protection systems.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 800 A current rating for high-power industrial equipment.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- High 200 kA interrupting capacity for improved system protection.
- Integrated striker indicator simplifies maintenance and fuse monitoring.
Key Features
- Mersen Protistor® Size 33 series.
- Catalogue number: A070UD33LI800.
- 800 A rated current.
- 690 V AC IEC / 700 V AC UL operating voltage.
- aR ultra-fast semiconductor protection characteristic.
- Long slotted blade terminals.
- Integrated striker indicator.
- Silver-plated contacts with ceramic square body construction.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before expensive power electronic components can be damaged. The Mersen Protistor® range provides exceptionally low I²t values and rapid fault clearance, helping extend equipment life while reducing maintenance costs and production downtime.
The P300232 is widely specified by OEMs and industrial engineers for protecting variable speed drives, inverters, rectifiers, UPS systems and power conversion equipment operating in demanding industrial environments.
Typical Applications
- Variable speed drives (VSDs).
- Industrial power converters.
- Uninterruptible power supplies (UPS).
- Motor drives and soft starters.
- Rectifiers and inverters.
- Industrial automation and power distribution systems.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | P300232 | |
| Catalogue No | A070UD33LI800 | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 800A With Striker Slotted Blades long | |
| EAN/UPC Code | 3605340325379 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 800 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 540 kA²s | |
| Melting I2t | 93 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 | Slotted Blades | |
| Product Width | 73 mm | |
| Product Length | 153 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.6298 kg | |
| Sell Pack Width | 160 mm | |
| Sell Pack Length | 250 mm | |
| Sell Pack Height | 90 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.8766 kg | |
| Power Dissipation at Rated Current Value | 130 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen P300232 used for?
The P300232 is an ultra-fast semiconductor fuse designed to protect IGBTs, thyristors, diodes and other power semiconductor devices from overcurrent faults.
What is the current rating of the P300232?
The fuse has a rated current of 800 A.
What voltage is the fuse rated for?
The P300232 is rated for 690 V AC (IEC) and 700 V AC (UL) operation.
Does the fuse include a status indicator?
Yes. The fuse incorporates an integrated striker indicator to assist with maintenance and fault identification.
Which applications commonly use this fuse?
It is commonly installed in variable speed drives, UPS systems, industrial converters, rectifiers, inverters and other semiconductor-based power equipment.
Trusted by Power Electronics Professionals Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, machine builders and industrial engineers to provide dependable protection for high-value power electronic equipment operating in demanding industrial environments.
