EconiQ™ Dead Tank Breaker 420 kV

The EconiQ 420PM63-HA is the first eco-efficient Dead Tank Circuit Breaker at transmission voltage level. It combines a low carbon footprint, superior reliability and low life cycle costs.

EconiQ is Hitachi Energy’s eco-efficient portfolio with products, services, and solutions proven to deliver exceptional environmental performance.

Throughout its complete life cycle, the EconiQ 420PM63-HA Dead Tank Circuit Breaker significantly reduces CO₂ equivalent (CO₂eq) emissions compared to the existing SF₆ solutions.

This product offers easy operation at high-performance ratings by using well-established gas circuit-breaker technology, which has been utilized for decades in transmission systems globally.

The eco-efficient Dead Tank Breaker (DTB) uses as a gas mixture of Carbon Dioxide (CO₂), Oxygen (O₂) and a specific fluoronitrile (C4-FN). The mixture essentially eliminates the CO₂eq emissions of the insulating medium.

• Line, transformer, reactor and capacitor switching
• Point-on-wave switching
• High seismic applications
• High altitude applications

• It’s the first eco-efficient Dead Tank Circuit Breaker at transmission voltage level
• Comparable gas handling procedure to SF₆ breakers, minimizing training effort and adaptation of service concepts
• Tested according to IEEE and IEC standards with mechanical endurance class M2
• Identical gas mixture across EconiQ GIS/DTB portfolio

• Reduction of total life cycle emissions
• No risk of accidental leakage of SF₆
• Transparent environmental performance thanks to a detailed product life cycle assessment