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MERSEN FUSE 6,9 URD 31 D11 A 0630 6,9URD31D11A0630
High-speed fuse designed for semiconductor protection with 630A rating at 690VAC IEC and 700VAC UL, featuring striker indication and DIN 110 blades for bolted mounting.
£106.96
Why Choose the Mersen Q300026 Protistor® High-Speed Fuse?
The Mersen Q300026 is a genuine Protistor® Size 31 square body high-speed semiconductor fuse engineered to provide exceptional protection for sensitive power electronic devices in demanding industrial applications. Identified by the catalogue number PC31UD69V630D1A, this ultra-fast aR characteristic fuse is specifically designed to protect semiconductors including IGBTs, thyristors and diodes against damaging short-circuit currents.
As part of the renowned Mersen Protistor® Size 31 series, the Q300026 combines rapid fault clearing, high breaking capacity and low let-through energy to maximise equipment reliability and minimise costly downtime. Its robust ceramic square body, silver-plated contacts and integrated striker indicator make it ideal for modern power conversion equipment and industrial automation systems.
With a 630 A current rating, 690 V AC IEC and 700 V AC UL voltage rating, the Mersen Q300026 is ideally suited to protecting variable speed drives, UPS systems, converters, inverters, motor drives and other semiconductor-based power equipment.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 630 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL rated operation.
- Ultra-fast aR operating characteristic for semiconductor protection.
- Integrated striker indicator for quick fuse status identification.
- High breaking capacity protects valuable power electronic equipment.
Key Features
- Mersen Protistor® Size 31 series.
- Manufacturer part number: Q300026.
- Catalogue number: PC31UD69V630D1A.
- 630 A rated current.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR ultra-fast operating characteristic.
- Square body ceramic construction with silver-plated contact surfaces.
- DIN 110 blade terminals with integrated striker indicator.
Advanced Semiconductor Protection
High-speed semiconductor fuses are specifically designed to protect sensitive power electronic components from destructive short-circuit currents before permanent damage occurs. Their exceptionally low let-through energy helps extend equipment life while reducing maintenance costs and unplanned downtime in industrial installations.
The Mersen Protistor® range is trusted worldwide for protecting variable frequency drives, UPS systems, rectifiers, converters, soft starters, renewable energy equipment and other semiconductor-based power electronics requiring fast and dependable circuit protection.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS systems.
- Renewable energy power conversion equipment.
- Semiconductor protection in industrial automation systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | Q300026 | |
| Catalogue No | PC31UD69V630D1A | |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 630A With Striker DIN 110 Blades | |
| EAN/UPC Code | 3605340322507 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 630 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 31 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 430000 A²s | |
| Melting I2t | 75000 A²s | |
| 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 | DIN 110 Blades | |
| Product Width | 51 mm | |
| Product Length | 134.6 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.2429 kg | |
| Sell Pack Width | 142 mm | |
| Sell Pack Length | 166 mm | |
| Sell Pack Height | 62 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.4143 kg | |
| Power Dissipation at Rated Current Value | 85 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen Q300026 used for?
The Mersen Q300026 protects semiconductor devices such as IGBTs, thyristors and diodes from damaging short-circuit currents in industrial power conversion equipment.
What is the current rating of the Q300026?
The fuse has a 630 A rated current.
What voltage is this fuse designed for?
The Q300026 is rated for 690 V AC (IEC) and 700 V AC (UL).
What does the aR characteristic mean?
The aR operating characteristic provides ultra-fast protection specifically for semiconductor devices against short-circuit faults.
Does the fuse include an indicator?
Yes. The Q300026 includes an integrated striker indicator for simplified fuse monitoring and maintenance.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, panel builders and industrial engineers to provide dependable protection for modern power electronic equipment in demanding industrial environments.
