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MERSEN FUSE A 070 URD 32 KI 1000 A070URD32KI1000
High-speed fuse engineered for reliable protection of power semiconductors with rapid fault clearing up to 1000A, featuring integrated striker and slotted blades for easy detection and safe disconnection.
£154.24
Why Choose the Mersen H300203 Protistor® High-Speed Fuse?
The Mersen H300203 is a heavy-duty Protistor® square body semiconductor fuse designed to provide ultra-fast protection for high-power semiconductor devices in demanding industrial applications. This 1000 A high-speed fuse safeguards IGBTs, thyristors, diodes and other power semiconductors against damaging short-circuit currents while helping maximise equipment uptime.
Part of the Mersen Protistor® Size 32 aR series, the H300203 delivers exceptional current-limiting performance with low let-through energy (I²t), reducing the risk of damage to valuable power conversion equipment. Its square body construction incorporates reinforced short slotted blade terminals and an integrated striker indicator for reliable installation and straightforward maintenance.
Rated for 690 V AC (IEC), 700 V AC (UL) and a 1000 A current rating, the H300203 is ideally suited to protecting high-power converters, industrial drives, UPS systems and other semiconductor-based electrical equipment.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 1000 A current rating for high-power industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- Integrated striker indicator for simplified maintenance.
- Low I²t characteristics help minimise semiconductor damage during fault conditions.
Key Features
- Mersen Protistor® Size 32 aR series.
- 1000 A rated current.
- 690 V AC (IEC) / 700 V AC (UL).
- Square body ceramic fuse construction.
- Short slotted blade terminals.
- Integrated striker indication.
- Silver-plated contact surfaces for reliable electrical performance.
- Ultra-fast current-limiting semiconductor protection.
Reliable Protection for High-Power Electronics
High-speed semiconductor fuses interrupt fault currents before excessive thermal energy can damage sensitive power electronic components. Their low I²t characteristics make them essential for protecting industrial converters, motor drives and other high-power semiconductor equipment.
The Mersen H300203 is widely specified by OEMs and maintenance engineers where dependable semiconductor protection and high interrupting capacity are required in demanding industrial power systems.
Typical Applications
- High-power variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS systems.
- Renewable energy power conversion equipment.
- Heavy industrial automation systems.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | H300203 | |
| Catalogue No | A070UD32KI1000 | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 1000A With Striker Slotted Blades short | |
| EAN/UPC Code | 3605340324846 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 1000 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1380 kA²s | |
| Melting I2t | 240 kA²s | |
| 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 | Slotted Blades | |
| Product Width | 59 mm | |
| Product Length | 134 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.6569 kg | |
| Sell Pack Width | 160 mm | |
| Sell Pack Length | 195 mm | |
| Sell Pack Height | 72 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.5523 kg | |
| Power Dissipation at Rated Current Value | 135 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen H300203 used for?
The H300203 provides ultra-fast protection for high-power semiconductor devices used in industrial converters, drives and other power electronic equipment.
What is the current rating of the H300203?
The fuse has a 1000 A current rating.
What voltage is this fuse designed for?
The H300203 is rated for 690 V AC (IEC) and 700 V AC (UL).
What does the aR fuse classification mean?
An aR fuse is designed specifically for semiconductor short-circuit protection, providing extremely fast fault interruption while allowing overload protection to be provided separately.
Where is the H300203 commonly installed?
It is commonly installed in high-power variable frequency drives, converters, UPS systems, renewable energy equipment and industrial power electronic installations.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and maintenance engineers to protect valuable industrial power electronic equipment and minimise costly downtime.
