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MERSEN FUSE 6,9 URD 33 D08 A 1000 6,9URD33D08A1000
High-speed Protistor® fuse with square ceramic body, striker indication, DIN 80 blade terminals, rated 1000A at 690VAC IEC and 700VAC UL standards, designed for semiconductor protection in industrial applications.
£149.04
Why Choose the Mersen N300254 Protistor® High-Speed Fuse?
The Mersen N300254, catalogue number PC33UD69V1000A, is a Protistor® Size 33 square body high-speed semiconductor protection fuse designed to protect sensitive power electronic equipment from damaging short-circuit faults. Featuring an ultra-fast aR operating characteristic, this fuse is specifically engineered for the protection of IGBTs, thyristors, diodes, SCRs and other semiconductor devices used in industrial power conversion equipment.
Rated at 1000 A with a 690 V AC IEC / 700 V AC UL voltage rating, the N300254 provides exceptional current limiting performance with a high 200 kA breaking capacity. Its low let-through energy (I²t) helps minimise damage to expensive electronic components while maximising equipment reliability and reducing downtime.
The fuse incorporates DIN 80 silver-plated blade terminals, an integrated striker indicator for remote status indication, and a ceramic square body construction designed for demanding industrial environments. It is ideally suited to variable speed drives, UPS systems, inverters, motor drives and other high-power semiconductor applications.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 1000 A continuous current rating.
- 690 V AC IEC / 700 V AC UL operation.
- Protects IGBTs, thyristors, SCRs and power semiconductors.
- Integrated striker indication system.
- Very low I²t for enhanced semiconductor protection.
- High 200 kA interrupting capacity.
- Designed for demanding industrial power conversion applications.
Key Features
- Mersen Protistor® Size 33 series.
- Catalogue number PC33UD69V1000A.
- 1000 A rated current.
- 690 V AC IEC / 700 V AC UL.
- aR ultra-fast operating characteristic.
- Square body ceramic construction.
- DIN 80 silver-plated blade terminals.
- Integrated striker indicator.
Designed for Critical Power Electronics
High-speed Protistor® semiconductor fuses are engineered to interrupt fault currents before excessive thermal energy reaches sensitive semiconductor devices. Their extremely fast response, low energy let-through and high interrupting capacity help extend equipment life while reducing repair costs and production downtime.
The Mersen N300254 is widely used by OEMs, panel builders and maintenance engineers protecting industrial drives, renewable energy systems, UPS equipment and power conversion installations requiring dependable semiconductor protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- UPS systems.
- Power converters.
- Renewable energy inverters.
- Semiconductor protection.
- Industrial control panels.
- Power distribution equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | N300254 | |
| Catalogue No | PC33UD69V1000A | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 1000A With Striker DIN 80 Blades | |
| EAN/UPC Code | 3605340325812 | |
| 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 | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 990 kA²s | |
| Melting I2t | 170 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 | DIN 80 Blades | |
| Product Width | 73 mm | |
| Product Length | 110 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.4369 kg | |
| Sell Pack Width | 145 mm | |
| Sell Pack Length | 250 mm | |
| Sell Pack Height | 90 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.8123 kg | |
| Power Dissipation at Rated Current Value | 155 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen N300254 used for?
The N300254 protects semiconductor devices such as IGBTs, thyristors, SCRs and diodes used in industrial power electronic equipment.
What is the current rating of the N300254?
The Mersen N300254 has a continuous current rating of 1000 A.
What voltage is the fuse rated for?
The fuse is rated for 690 V AC (IEC) and 700 V AC (UL).
Does the N300254 include an indicator?
Yes. The fuse incorporates an integrated striker indicator for fuse status indication and optional microswitch operation.
What does the aR characteristic mean?
The aR operating characteristic identifies an ultra-fast semiconductor protection fuse intended specifically for short-circuit protection of sensitive power electronic devices.
Trusted by Industrial Engineers Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, machine builders and maintenance professionals for delivering reliable, high-speed protection of critical industrial power electronic systems.
