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MERSEN FUSE 6,9 URD 31 EF 0350 6,9URD31EF0350
High-speed aR characteristic fuse with ceramic square body, rated 350A for 690VAC IEC and 700VAC UL applications, featuring striker indication and open slot blades for secure bolted mounting.
£85.06
Why Choose the Mersen N300047 Industrial Fuse?
The Mersen N300047 is an industrial electrical protection component designed to help safeguard circuits and connected equipment against damaging overcurrent and short-circuit conditions. Manufactured by Mersen, a recognised specialist in electrical power protection, this fuse is suitable for maintenance, repair and replacement applications within industrial electrical systems.
Engineered for dependable circuit protection, the Mersen N300047 provides a controlled interruption point when electrical current exceeds the fuse’s specified operating limits. This helps reduce the risk of damage to cables, semiconductor components, control equipment and other valuable electrical assets.
The N300047 fuse is particularly suitable for engineers, panel builders and maintenance professionals seeking a genuine Mersen replacement component. Before installation, the fuse rating, voltage, operating class, dimensions and connection format should be checked against the equipment documentation or the markings on the original fuse.
Key Advantages
- Genuine Mersen industrial circuit protection component.
- Designed to interrupt potentially damaging overcurrent conditions.
- Suitable for industrial maintenance, repair and replacement projects.
- Helps protect electrical equipment against short-circuit damage.
- Manufactured for reliable performance in professional electrical systems.
- Suitable for use in compatible fuse holders and protection assemblies.
Key Features
- Mersen product reference N300047.
- Industrial fuse for electrical circuit protection.
- Designed for controlled fault-current interruption.
- Suitable for compatible industrial electrical equipment.
- Supports preventative maintenance and equipment protection.
- Genuine replacement option for an existing N300047 fuse.
- Professional-grade construction for industrial environments.
- Compact format for integration into compatible protection assemblies.
Reliable Protection for Industrial Electrical Systems
Industrial fuses provide an essential layer of protection by disconnecting a circuit when excessive current creates a risk to equipment or wiring. Correctly selected fuse protection can minimise electrical damage, improve system safety and reduce the duration and cost of unplanned equipment downtime.
For safe and reliable operation, replacement fuses should match the electrical characteristics and physical configuration specified by the equipment manufacturer. The Mersen N300047 reference should therefore be verified against the original component before the replacement is installed or energised.
Typical Applications
- Industrial control panels and switchgear.
- Power distribution and circuit protection assemblies.
- Motor control and automation equipment.
- Industrial machinery and production systems.
- Power conversion and control equipment.
- Electrical maintenance and repair operations.
- OEM machinery and replacement-parts programmes.
- Compatible Mersen fuse holders and assemblies.
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 | N300047 | |
| Catalogue No | PC31UD69V350EF | |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 350A With Striker Open Slot Blades | |
| EAN/UPC Code | 3605340322712 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 350 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 31 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 61000 A²s | |
| Melting I2t | 10300 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 | Open Slot Blades | |
| Product Width | 51 mm | |
| Product Length | 109.4 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.2129 kg | |
| Sell Pack Width | 143 mm | |
| Sell Pack Length | 175 mm | |
| Sell Pack Height | 73 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.4043 kg | |
| Power Dissipation at Rated Current Value | 67 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen N300047 used for?
The Mersen N300047 is used to protect compatible industrial electrical circuits and equipment against excessive current and short-circuit faults.
Can the N300047 be used as a replacement fuse?
Yes. It may be used as a replacement where Mersen N300047 is the specified reference and all electrical ratings, dimensions and connection details match the original component.
How do I confirm that this fuse is compatible?
Check the N300047 reference, current rating, voltage rating, operating class, physical dimensions and terminal format against the original fuse and the equipment manufacturer’s documentation.
Why is the correct fuse rating important?
Using the correct fuse rating ensures that the circuit receives the intended level of protection. An incorrectly rated fuse may operate unnecessarily or fail to protect the equipment adequately.
Who should install the Mersen N300047?
The fuse should be selected and installed by a suitably qualified electrical professional in accordance with the equipment instructions and applicable electrical safety requirements.
Trusted Electrical Protection from Mersen
Mersen electrical protection products are used by engineers, equipment manufacturers and maintenance professionals to support reliable fault protection in industrial power and automation systems.
