Why Choose the Mersen Q1018316 High Voltage Transformer Protection Fuse?
The Mersen Q1018316 is a dependable high voltage DIN back-up fuse-link designed to protect transformers and associated medium voltage equipment against damaging short-circuit currents. As part of the advanced Mersen Limitor®-PTS series, it combines reliable current-limiting protection with low power dissipation and an integrated thermal striker for modern high voltage switchgear and controlgear.
This fuse-link is manufactured using pure silver fuse elements, silver-coated copper terminals and a robust ceramic body. Its low-loss fuse-element design helps reduce heat generation within enclosed switchgear, while the thermal striker helps prevent overheating and supports coordinated operation with compatible switching equipment.
With a rated voltage of 12 kV AC, a rated current of 125 A and a maximum breaking capacity of 80 kA, the Q1018316 is suitable for demanding transformer protection applications. Its 88 mm diameter × 292 mm fuse body and integrated 80 N thermal striker make it suitable for compatible air-insulated and gas-insulated medium voltage switchgear.
Key Advantages
- Designed specifically for high voltage transformer protection.
- 12 kV AC rated voltage for medium voltage distribution systems.
- 125 A rated current for compatible transformer circuits.
- 80 kA breaking capacity for dependable fault interruption.
- Low power dissipation helps reduce thermal loading within switchgear.
- Integrated 80 N thermal striker for fault indication and switching.
- Current-limiting operation helps reduce damaging fault energy.
- Suitable for compatible air-insulated and gas-insulated switchgear.
Key Features
- Mersen Limitor®-PTS high voltage DIN back-up fuse-link.
- Catalogue number: 45DB120V125PTS2.
- Rated voltage: 12 kV AC.
- Rated current: 125 A.
- Maximum breaking capacity: 80 kA.
- Fuse body size: 88 mm diameter × 292 mm length.
- Overall product length: 358 mm.
- Integrated 80 N thermal striker mechanism.
- Low power loss fuse-element design.
- VDE T402 design in accordance with IEC 60282-1.
High voltage back-up fuse-links protect transformers by rapidly limiting and interrupting severe short-circuit currents before excessive thermal or mechanical stress can damage transformer windings, switchgear or connected distribution equipment. Their current-limiting characteristics reduce the peak current and energy passed into a fault.
The Mersen Q1018316 combines low power dissipation with an integrated thermal striker, helping reduce heat within enclosed switchgear and prevent excessive fuse-compartment temperatures. The striker can also activate compatible switching equipment, supporting coordinated isolation following fuse operation or abnormal thermal conditions.
Typical Applications
- Medium voltage transformer protection.
- Gas-insulated switchgear.
- Air-insulated switchgear.
- Transformer substations.
- Ring main units.
- Industrial power distribution systems.
- Utility distribution equipment.
- OEM transformer controlgear.
