CTB Spring Load Drive Operating Mechanism VCB [tab] [tab_item title=”Specification”] CTB Spring Load Drive Operating Mechanism VCB Model CTB spring operating mechanism is mainly used in the outdoor Model ZW32 pole-mounted vacuum circuit breaker with a rated voltage 12kv and other indoor and outdoor vacuum circuit breaker and load switches with similar closing power. It is… Continue reading CTB Spring Load Drive Operating Mechanism VCB