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MERSEN FUSE A 070 URD 30 LI 0250 A070URD30LI0250
High-speed Protistor® fuse with aR characteristic for semiconductor protection, rated 250A at 690VAC IEC and 700VAC UL, featuring a square ceramic body, striker indication, and slotted blade terminals.
£110.41
Why Choose the Mersen T300144 Industrial Electrical Protection Component?
The Mersen T300144 is a manufacturer-specific industrial electrical protection component intended for use in compatible machinery, electrical control panels, power distribution assemblies and automation systems. Its dedicated product reference helps engineers, maintenance teams and procurement professionals identify the correct Mersen component for replacement, repair and equipment-support requirements.
Mersen manufactures specialist fuses and circuit protection products for industrial power systems, production machinery and demanding electrical installations. When correctly specified, these components help isolate abnormal electrical conditions and reduce the risk of thermal or mechanical damage to conductors, control devices, power equipment and connected machinery.
Detailed public technical specifications for the T300144 reference could not be reliably verified. Its 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 protection component.
- Dedicated T300144 manufacturer reference supports accurate product identification.
- Suitable for industrial maintenance, repair and replacement requirements.
- Helps protect compatible electrical circuits and connected equipment.
- Supports dependable operation when correctly matched to the original component.
- Suitable for professional machinery, panel building and automation applications.
Key Features
- Mersen electrical protection product.
- Manufacturer part number: T300144.
- Designed for compatible industrial electrical applications.
- Suitable for replacing an existing component with the same approved reference.
- Manufacturer-specific identification helps reduce replacement errors.
- Electrical and mechanical compatibility must be verified before use.
- Intended for installation by suitably qualified electrical personnel.
Reliable Protection for Industrial Electrical Systems
Industrial electrical protection components are used to interrupt or isolate circuits when abnormal current or fault conditions occur. Correctly selected protection can help limit damage to conductors, switching equipment, control devices, power components and connected machinery.
The Mersen T300144 should not be selected by physical appearance or mounting dimensions alone. Before installation, verify the complete manufacturer 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 | T300144 | |
| Catalogue No | A070UD30LI250 | |
| Description | Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 250A With Striker Slotted Blades long | |
| EAN/UPC Code | 3605340323894 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 250 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 30 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 32.4 kA²s | |
| Melting I2t | 5.8 kA²s | |
| 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 | Slotted Blades | |
| Product Width | 40 mm | |
| Product Length | 148.6 mm | |
| Product Height | 48 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 0.9639 kg | |
| Sell Pack Width | 133 mm | |
| Sell Pack Length | 157 mm | |
| Sell Pack Height | 54 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.3213 kg | |
| Power Dissipation at Rated Current Value | 50 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen T300144 used for?
The Mersen T300144 is an industrial electrical protection component intended for use in compatible machinery, control, automation or power distribution equipment.
Is T300144 the manufacturer part number?
Yes. T300144 is the Mersen product reference and should be matched exactly against the original component or approved equipment documentation.
How can I confirm the electrical ratings?
Check the markings on the original component, the equipment manual or official Mersen documentation to confirm its current rating, voltage rating, protection class and breaking capacity.
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 and terminal arrangement must all be compatible with the original installation.
Who should install the Mersen T300144?
The component should be selected and installed by suitably qualified electrical personnel in accordance with applicable regulations and the equipment manufacturer’s instructions.
Trusted Electrical Protection from Mersen
Mersen electrical protection products are used by machine builders, panel manufacturers, electrical engineers and maintenance professionals across demanding industrial applications worldwide.
