Why Choose the Mersen X077852 Medium-Voltage Fuse-Link?
The Mersen X077852, identified by the catalogue designation 7200 CP GLF 20.190 1,5, is a cylindrical medium-voltage fuse-link designed to protect voltage transformers and other low-power medium-voltage circuits against damaging short-circuit currents. Its current-limiting operation helps isolate electrical faults rapidly while reducing the thermal and mechanical stress imposed on protected equipment.
Manufactured by Mersen, formerly known as Ferraz Shawmut, this fuse-link combines a durable insulating body with metallic end contacts for reliable service in compatible medium-voltage fuse holders. Its specialised low-current rating makes it suitable for instrument transformer, measurement and auxiliary circuit applications where conventional transformer fuses may not provide the required protection.
With a rated voltage of 7.2 kV AC, a rated current of 1.5 A and a cylindrical 20 × 190 mm format, the Mersen X077852 provides a compact protection solution for medium-voltage switchgear and distribution equipment. Correct coordination with the protected equipment and compatible fuse holder is essential when selecting the fuse-link.
Key Advantages
- Dependable medium-voltage short-circuit protection.
- 7.2 kV AC rated voltage for medium-voltage electrical systems.
- 1.5 A rated current suitable for low-power circuits.
- Current-limiting performance helps reduce damaging fault energy.
- Compact 20 × 190 mm cylindrical construction.
- Suitable for compatible instrument transformer and switchgear fuse holders.
Key Features
- Mersen medium-voltage cylindrical fuse-link.
- Manufacturer part number X077852.
- Catalogue designation 7200 CP GLF 20.190 1,5.
- 7.2 kV AC rated voltage.
- 1.5 A rated current.
- GLF fuse characteristic.
- 20 mm diameter and 190 mm overall length.
- Current-limiting design for rapid fault interruption.
- Insulating cylindrical body with metallic end contacts.
- Designed for compatible medium-voltage fuse bases and holders.
Reliable Protection for Low-Power Medium-Voltage Circuits
Voltage transformers and other low-power medium-voltage devices require carefully selected fuse protection to disconnect internal or downstream faults without unnecessarily exposing switchgear and conductors to damaging fault energy. The Mersen X077852 operates by melting its internal fuse element when the current exceeds its designed operating limits.
Its current-limiting action restricts both the magnitude and duration of short-circuit current. This helps protect instrument transformers, metering equipment and auxiliary circuits while supporting safe and dependable operation of the wider electrical distribution system.
Typical Applications
- Voltage transformer protection.
- Potential transformer circuits.
- Medium-voltage metering systems.
- Measurement and instrumentation circuits.
- Auxiliary circuits within medium-voltage switchgear.
- Industrial and utility power distribution equipment.
