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MERSEN FUSE A070 URD 33 TTI 0800 A070URD33TTI0800
High-speed fuse designed for semiconductor protection with 800A rating, suitable for AC voltages up to 700V UL and 690V IEC, featuring a striker indication system and flush ends with UNC threads.
£126.79
Why Choose the Mersen T300443 Industrial Electrical Protection Component?
The Mersen T300443 is a manufacturer-specific industrial electrical protection component for compatible machinery, electrical control panels, power distribution assemblies and automation systems. Its dedicated Mersen reference helps engineers, maintenance teams and procurement professionals identify the required component for replacement, repair and ongoing equipment support.
Mersen manufactures specialist fuses and electrical protection products for industrial power systems, production machinery and demanding electrical installations. Correctly selected protection components can help isolate abnormal electrical conditions and reduce the risk of damage to conductors, control devices, power equipment and connected machinery.
Detailed technical specifications for the Mersen T300443 could not be reliably verified from publicly available product information. Its product type, rated current, operating voltage, protection or utilisation class, breaking capacity, terminal configuration and physical dimensions should therefore be confirmed from the product markings, original equipment documentation or official Mersen technical data before ordering or installation.
Key Advantages
- Genuine Mersen industrial electrical component.
- Dedicated T300443 manufacturer reference supports accurate identification.
- Suitable for industrial maintenance, repair and replacement requirements.
- Supports the protection and dependable operation of compatible electrical equipment.
- Reduces the risk of incorrect component selection when matched by exact reference.
- Suitable for professional machinery, panel building and automation applications.
Key Features
- Mersen electrical product.
- Manufacturer part number: T300443.
- Intended for compatible industrial electrical applications.
- Suitable for replacing an existing component carrying the same approved reference.
- Manufacturer-specific identification supports maintenance and procurement workflows.
- Electrical and mechanical compatibility must be verified before use.
- Designed for installation by suitably qualified electrical personnel.
Accurate Component Selection for Industrial Electrical Systems
Manufacturer-specific references are essential when sourcing electrical components for established machinery and control systems. Matching the complete Mersen part number helps maintenance teams avoid installing a component with incompatible ratings, operating characteristics, dimensions or connection arrangements.
The Mersen T300443 should not be selected by physical appearance or mounting dimensions alone. Before installation, verify the complete reference and all applicable electrical, mechanical and operating specifications against the original component, approved bill of materials or equipment manufacturer documentation.
Typical Applications
- Industrial electrical control panels.
- Machinery and production equipment.
- Power distribution assemblies.
- Motor control systems.
- Automation and process control equipment.
- Power conversion installations.
- OEM electrical systems.
- Maintenance and replacement of matching Mersen components.
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 | T300443 | |
| Catalogue No | A070UD33TTI800 | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 800A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340328479 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 800 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 540 kA²s | |
| Melting I2t | 93 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 Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 73 mm | |
| Product Length | 50.6 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.682 kg | |
| Sell Pack Width | 86 mm | |
| Sell Pack Length | 247 mm | |
| Sell Pack Height | 94 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.894 kg | |
| Power Dissipation at Rated Current Value | 120 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen T300443 used for?
The exact product function could not be confirmed from reliable public technical information. T300443 is a Mersen manufacturer reference intended to identify a specific component used in compatible industrial electrical equipment.
Is T300443 the manufacturer part number?
Yes. T300443 is the supplied Mersen product reference and should be matched exactly against the original component or approved equipment documentation.
How can I confirm the electrical specifications?
Check the markings on the original component, the equipment manual, the approved bill of materials or official Mersen documentation to confirm its function, ratings, dimensions and connection arrangement.
Can a physically similar component be used as a replacement?
A replacement should not be selected by appearance alone. Its electrical ratings, operating characteristics, dimensions, mounting method and terminal arrangement must all be compatible with the original installation.
Who should install the Mersen T300443?
The component should be selected and installed by suitably qualified electrical personnel in accordance with applicable regulations and the equipment manufacturer’s instructions.
Industrial Electrical Expertise from Mersen
Mersen products are specified across industrial machinery, electrical panels, power systems and maintenance applications where accurate component selection is essential.
