General：

VD4 series circuit-breakers are devices under vacuum for indoor installation. Please contact ROCKWILL for special installation requirements. VD4-R series medium voltage vacuum circuit-breakers with lateral operating mechanism for indoor installation feature the separate pole construction technique.Each pole houses a vacuum interrupter which is encased in the resin when the cylinder is moulded thanks to a special manufacturing process. This construction method protects the vacuum interrupter from shock, pollution and condensation.The operating mechanism is the trip-free stored energy type with independent opening and closing regardless of the opera-tor’s action. The operating mechanism is widely used in all VD4-R series circuit-breakers with frontal control.The circuit-breaker can be remote controlled when fitted with dedicated electrical accessories (gearmotor,opening and closing release).

The operating mechanism, the three poles and the current sensors (if provided) are installed on a metal frame without wheels. The construction is particularly compact, sturdy and of limited weight.VD4-R series circuit-breakers with lateral operating mechanisms are life-long sealed pressure devices.(Standards IEC 62271-100)

Main technical data：

The following technical parameters fully present the product's electrical parameter configurations, mechanical performance parameters, and dimensional details to facilitate precise system integration and application planning.

Dimensioned Drawing