MERSEN FUSE H 1209P BCKUP VDE292-88/125 D1000250

Why Choose the Mersen D1000250 High Voltage Transformer Fuse?

The Mersen D1000250 is a dependable high voltage DIN back-up fuse developed to protect medium voltage transformers against the damaging effects of short-circuit currents. Part of the proven Mersen Limitor®-PD range, it is designed for reliable operation in high voltage switchgear, controlgear and electrical distribution systems.

This fuse-link is manufactured using carefully selected materials, including pure silver fuse elements, silver-coated copper end caps and a robust ceramic body. Its durable construction provides dependable electrical interruption, excellent insulation and the mechanical strength required for demanding industrial and utility installations.

With a rated voltage of 12 kV AC, a rated current of 125 A and an integrated 80 N striker, the D1000250 provides effective transformer short-circuit protection within compatible medium voltage switchgear. Its VDE T402 format measures approximately 88 mm in diameter and 292 mm in length.

Key Advantages

• Designed specifically for medium voltage transformer protection.
• 12 kV AC rated voltage for high voltage distribution systems.
• 125 A rated current.
• Back-up fuse performance for dependable short-circuit protection.
• Integrated 80 N striker for compatible switchgear mechanisms.
• Pure silver fuse elements support reliable fault interruption.
• Robust ceramic body provides excellent insulation and durability.
• Manufactured in accordance with IEC 60282-1 and VDE 0670 T402.

Key Features

• Mersen Limitor®-PD high voltage fuse range.
• 12 kV AC rated voltage.
• 125 A rated current.
• VDE T402 DIN fuse format.
• 88 mm diameter and 292 mm length.
• Integrated 80 N striker.
• Pure silver fuse elements.
• Silver-coated copper end caps.
• Durable ceramic fuse body.
• Designed for transformer short-circuit protection.

Reliable Protection for Medium Voltage Transformers

High voltage back-up fuses such as the Mersen D1000250 are designed to interrupt high fault currents before they can cause severe thermal or mechanical damage to transformers and associated electrical equipment. They are typically coordinated with suitable switching and overload protection devices to provide comprehensive protection across the required operating range.

The Limitor®-PD range combines proven fuse technology with high quality conductive and insulating materials. This construction makes the D1000250 suitable for demanding medium voltage installations where dependable fault interruption, equipment protection and continuity of service are essential.

Typical Applications

• Medium voltage transformer protection.
• High voltage switchgear and controlgear.
• Utility substations and distribution networks.
• Industrial electrical distribution systems.
• Renewable energy substations.
• Commercial infrastructure power systems.
• OEM medium voltage switchgear assemblies.
• Transformer feeder protection.