VD4 MV Vacuum Circuit Breakers

This PDF product flyer targets power utilities, EPC contractors and panel‑builders for tender comparison, cabinet‑type‑selection and pre‑sales technical evaluation. This indoor vacuum circuit‑breaker complies with IEC 62271‑1, IEC 62271‑100 and relevant ANSI standards.

It adopts vacuum‑interrupter with modular spring‑stored‑energy operating‑mechanism, achieving up‑to‑30 000 overhaul‑free mechanical operations, and meets M2 mechanical‑class, E2 electrical‑endurance and C2 capacitive‑current‑breaking‑class.

This flyer records complete dielectric‑withstand values, making‑breaking‑capacity, O‑0.3s‑CO‑15s‑CO operating‑sequence, opening‑closing‑arcing‑time parameters, 4‑second short‑time withstand‑current, control‑voltage range 24‑250 V, secondary‑circuit insulation‑level, ‑15 ℃ ~ +40 ℃ operating‑temperature.

It supports rich standardized accessories & spare‑parts, and offers custom‑manufacturing including parameter adjustment, accessory configuration and project‑specific factory‑acceptance‑test for transformer, motor, capacitor‑bank and overhead‑cable protection scenarios. Please contact us for dimension drawings and full‑set type‑test‑reports.