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MERSEN FUSE 6,9 URD 31 D08 A 0450 6,9URD31D08A0450
High-speed Protistor® fuse with aR characteristic, rated for 690VAC IEC and 700VAC UL at 450A, featuring a mechanical striker for remote indication and DIN 80 blade terminals.
£86.97
Why Choose the Mersen C300014 PC31UD69V450A High-Speed Fuse?
The Mersen C300014 PC31UD69V450A 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 31 aR series, it is specifically designed to protect sensitive semiconductor devices including IGBTs, thyristors, diodes and rectifiers against damaging short-circuit faults in industrial power conversion systems.
Constructed using precision die-cut silver fuse elements embedded in solidified silica sand, the fuse delivers excellent current limiting performance, low let-through energy and exceptional breaking capacity. Silver-plated contact surfaces and non-magnetic hardware ensure long-term reliability in demanding industrial environments while the integrated striker indicator simplifies maintenance and remote monitoring.
With a 450 A current rating, 690 V AC IEC and 700 V AC UL voltage ratings, the C300014 is ideally suited for variable frequency drives, converters, UPS systems, renewable energy equipment and industrial automation applications requiring dependable semiconductor protection.
Key Advantages
- Ultra-fast aR semiconductor fuse for critical power electronics.
- 450 A current rating for industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- High 200 kA breaking capacity.
- Integrated striker indicator for remote fuse monitoring.
- Silver-plated DIN 80 blade terminals for reliable electrical connections.
Key Features
- Mersen Protistor® Size 31 aR series.
- 450 A rated current.
- 690 V AC IEC / 700 V AC UL.
- Square body ceramic fuse construction.
- DIN 80 blade terminals.
- Integrated striker indication.
- Ultra-fast protection for semiconductor devices.
- Current limiting design with low I²t characteristics.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before sensitive semiconductor devices suffer thermal or electrical damage. Their exceptionally fast operation reduces fault energy, improves equipment reliability and helps minimise costly downtime.
The Mersen Protistor® Size 31 range is trusted worldwide by OEMs, panel builders and industrial engineers for protecting converters, drives, UPS systems and renewable energy equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives.
- Industrial converters.
- UPS systems.
- Renewable energy inverters.
- Motor control centres.
- Industrial automation 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 | C300014 | |
| Catalogue No | PC31UD69V450A | |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 450A With Striker DIN 80 Blades | |
| EAN/UPC Code | 3605340322385 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 450 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 31 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 155000 A²s | |
| Melting I2t | 26500 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 80 Blades | |
| Product Width | 51 mm | |
| Product Length | 110 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.1598 kg | |
| Sell Pack Width | 143 mm | |
| Sell Pack Length | 167 mm | |
| Sell Pack Height | 64 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.3866 kg | |
| Power Dissipation at Rated Current Value | 70 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen C300014 used for?
It provides ultra-fast short-circuit protection for semiconductor devices including IGBTs, thyristors, diodes and rectifiers used in industrial power conversion equipment.
What is the current rating of this fuse?
The Mersen C300014 has a rated current of 450 A.
What voltage is this fuse designed for?
It is rated for 690 V AC (IEC) and 700 V AC (UL) systems.
Does this fuse include a striker indicator?
Yes. The fuse incorporates an integrated striker indicator that can be used with a compatible microswitch for remote status indication.
Where is this fuse commonly installed?
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other semiconductor-based power conversion systems.
Trusted for Semiconductor Protection Worldwide
Mersen Protistor® high-speed semiconductor fuses are trusted worldwide by OEMs and industrial engineers to provide reliable protection for critical power electronic equipment.
