Why Choose the Mersen L300367 6.9 kV Fuse?
The Mersen L300367, alternative reference 6,9URD32TDF0500, is an industrial fuse designed for the protection of compatible medium-voltage electrical equipment. Its manufacturer designation identifies it as a 6.9 kV, 500 A time-delay fuse in the Mersen URD Size 32 range.
Designed for demanding electrical installations, the L300367 provides controlled overcurrent protection while allowing short-duration operational current peaks to pass without unnecessary fuse operation. This time-delay characteristic can be valuable in applications involving transformers, motors and other equipment that may experience temporary inrush currents during energisation or start-up.
The Mersen L300367 should be selected using the exact manufacturer reference and verified against the equipment documentation, fuse mounting arrangement and protection study. Voltage rating, current rating, operating characteristic, physical dimensions and coordination requirements must all be confirmed before installation.
Key Advantages
- Designed for compatible 6.9 kV medium-voltage equipment.
- 500 A rated current for demanding electrical applications.
- Time-delay operating characteristic helps accommodate temporary inrush currents.
- Exact Mersen reference supports accurate replacement and procurement.
- Suitable for industrial power distribution and equipment protection.
- Manufactured by Mersen, a specialist in electrical protection products.
Key Features
- Mersen URD Size 32 fuse.
- Manufacturer part number: L300367.
- Alternative reference: 6,9URD32TDF0500.
- Nominal voltage designation: 6.9 kV.
- Rated current designation: 500 A.
- Time-delay fuse characteristic.
- Designed for professional industrial electrical installations.
- Suitable for replacement where the exact L300367 reference is specified.
Time-Delay Protection for Industrial Electrical Systems
Time-delay fuses are engineered to tolerate temporary current increases that occur during normal equipment operation while still providing protection against sustained overloads and fault currents. Correct coordination helps prevent nuisance operation without compromising the protection of cables, transformers and associated electrical equipment.
Medium-voltage fuse selection requires careful consideration of system voltage, prospective fault current, equipment inrush characteristics and coordination with upstream and downstream protective devices. The Mersen L300367 must only be installed where its complete specifications have been confirmed as suitable for the application.
Typical Applications
- Medium-voltage electrical distribution systems.
- Industrial transformer protection.
- Motor and machinery protection systems.
- Power generation and utility equipment.
- Manufacturing and processing installations.
- Replacement and refurbishment of compatible switchgear.
