Maintenance-free for life, modular in structure and extremely robust and compact in design – characteristics enabling embedded poles for vacuum circuit-breakers from ABB to fulfil the highest quality standards and making them highly reliable even in adverse conditions. With their intelligent overall design they can easily be assembled into vacuum circuit-breakers, making them the optimum choice for apparatus manufacturers. As a further plus, embedded poles from ABB function absolutely stably in the widest conceivable range of climatic conditions.