Power Generation Switches
Heavy-Duty 89SS and 89ND Switches
Your 89ND and 89SS switches require reliability and extended service life.
Hapam 89ND and 89SS switches have a proven performance in 7FA Gas Turbine Enclosures around the world. Operated by Hapam MR90GT motor operator, all parts of the switch and operator are made from machined billet materials.
- Proven performance
- Made from machined billet materials
Key features of our Power Generation Switches
High strength chromate plated steel base frame. Reliable silver plated copper contacts and hard drawn copper blades. Shaft mounted auxiliary contacts. Operated by motor operator via push-pull aircraft grade cable (passes under transformer or resistors). Motor operator is installed next to enclosure door which allows manual operation from outside the GTE.
High strength aluminium base frame. Reliable silver plated copper contacts and hard drawn copper blades. Shaft mounted auxiliary contacts. Operated by motor operator via steel linkage. Motor operator is installed next to enclosure door which allows manual operation from outside the GTE through an access trap;
Hapam MR90GT was designed to meet the most severe applications. Situated near the GTE doors, manual operation is done from the exterior via a new door mounted access trap. Local electric operation is either performed on the front of the operator or via the optional remote control panel. The motor operator does not require greasing.
Achievements
Discover how our technology performs in real‑world conditions across some of the most demanding high‑voltage applications. Each achievement highlights a specific project where Hapam disconnect switches delivered exceptional reliability, efficiency and durability, from SVC installations in Canada to utility and transmission projects worldwide.
A Century of Power
Installation and maintenance
At Hapam, we are committed to ensuring long‑term reliability and performance for every high‑voltage disconnector and earthing switch we deliver. Our equipment is designed for durability, easy installation and minimal maintenance, but ageing grid infrastructure can introduce new challenges over time. That’s why we provide fast, efficient retrofit solutions, global service support and access to expert technicians across all regions. From spare parts and installation guidance to testing, technical assistance and emergency repairs, our service organization is ready to support you throughout the entire lifecycle of your equipment.
Looking for a high‑voltage solution?
We design and manufacture reliable high‑voltage disconnectors and earthing switches used worldwide. Whether you need technical advice, a custom configuration or full project support, we are here to assist you.