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MERSEN FUSE A 070 URD 31 TTI 0550 A070URD31TTI0550
Protistor® Size 31 high-speed fuse ensures reliable equipment safety with rapid fault interruption up to 550A. Certified to IEC 690VAC and UL 700VAC standards with integrated striker indication and flush ends UNC threads.
£98.44
Why Choose the Mersen H300479 Electrical Protection Component?
The Mersen H300479 is a professional-grade electrical protection component intended for use with compatible industrial power distribution, power conversion and machinery control equipment. Manufactured by Mersen, it is suitable for applications where dependable protection, precise component identification and reliable system operation are essential.
The H300479 manufacturer reference enables engineers, panel builders, maintenance professionals and purchasing teams to identify the required component accurately. Selecting the correct Mersen product helps preserve the electrical and mechanical characteristics specified for the original installation while reducing the risk of compatibility problems caused by unsuitable replacement components.
Before purchasing or installing the Mersen H300479, its rated voltage, rated current, protection category, breaking capacity, terminal arrangement and physical dimensions should be confirmed against the existing component and the latest official Mersen technical documentation. Installation should only proceed when every relevant electrical and mechanical specification matches the intended application.
Key Advantages
- Genuine Mersen electrical protection component.
- Clearly identified by manufacturer reference H300479.
- Suitable for professional industrial electrical applications.
- Supports accurate maintenance and replacement-part selection.
- Designed for integration with compatible power and control equipment.
- Suitable for OEM, maintenance, repair and overhaul requirements.
Key Features
- Mersen manufacturer reference H300479.
- Professional-grade electrical protection construction.
- Suitable for compatible industrial power systems.
- Supports dependable equipment operation when correctly specified.
- Suitable for replacement and original equipment applications.
- Application-specific electrical and mechanical characteristics.
- Designed for installation by qualified electrical professionals.
- Backed by Mersen electrical protection expertise.
Reliable Protection for Industrial Electrical Systems
Correctly selected electrical protection components help limit the effects of short circuits, overcurrents and other abnormal electrical conditions. They can help protect valuable machinery, conductors, control systems and power electronic equipment while reducing the likelihood of unplanned downtime.
The Mersen H300479 should be matched using its complete manufacturer reference and installed by a suitably qualified electrical professional. The operating voltage, current, protection characteristics, breaking capacity, mounting arrangement and environmental conditions must be verified before the equipment is energised.
Typical Applications
- Industrial electrical control panels.
- Power distribution equipment.
- Power conversion and motor control systems.
- Industrial machinery and production equipment.
- OEM electrical assemblies.
- Maintenance, repair and overhaul projects.
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 | H300479 | |
| Catalogue No | A070UD31TTI550 | |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 550A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340329087 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 550 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 31 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 310000 A²s | |
| Melting I2t | 52000 A²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 51 mm | |
| Product Length | 50.6 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.155 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 168 mm | |
| Sell Pack Height | 65 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.385 kg | |
| Power Dissipation at Rated Current Value | 70 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen H300479 used for?
The Mersen H300479 is an electrical protection component intended for use with compatible industrial power, machinery and electrical control equipment.
How can I confirm that the H300479 is compatible?
Compare the complete H300479 part number, electrical ratings, protection characteristics, terminal configuration and dimensions with the existing component and official Mersen documentation.
Can the Mersen H300479 be used as a replacement part?
It may be used as a replacement where the original equipment documentation specifies the same Mersen reference and matching electrical and mechanical characteristics.
What specifications should be checked before installation?
Confirm the rated voltage, rated current, protection category, breaking capacity, terminal arrangement, dimensions and operating environment before installation.
Who should install the Mersen H300479?
The component should be selected and installed by a suitably qualified electrical professional in accordance with the equipment instructions and applicable electrical regulations.
Trusted Electrical Protection Expertise
Mersen electrical protection products are used by engineers, panel builders, equipment manufacturers and maintenance professionals to support dependable operation in industrial power and control systems.
