Vacuum interrupter

We offer vacuum interrupter for contactor
rated voltage 3.6kv
rated current 250400630a
rated frequency 50hz
rated short-time power frequency withstand voltage (1min) 21kv
rated lightring impulse withstand voltage (1 min) 40kv
rate making current 2.54.06.3ka
rate breaking current, max 2.03.25.0ka
rate breaking current, min 5080125a
rated making current, limit 2.54.06.3ka
rated short-time withstand current 2.54.06.3ka
rated duration of short-circuit 4s
mechanical life 30*104 times
electricity life ac-3 25*104 times
electricity life ac-4 10*104 times
rated contact stroke 3±0.5mm
contact closing force due to bellows and atmosphere 70±30n
conterforce at rated contact stroke 110±40n
circuit resistance at rated contact atmosphere force ≤60μω
shelf life 20 years
contact erosion limit 3mm
weight of moving parts ≤0.4kg
mechanical data required for matched vacuum switchgear
added contact force 110±10n
average opening speed 0.6±0.2ms
average closing speed 0.3±0.1s
contact bouncing duration at closing operation ≤2ms
contact bouncing bank amplitude of opening operation ≤2mm
three-pole simultaneity ≤1ms
note:rated characteristics can be customised on requirment.