Schneider Electric Acti9 ILD four-pole residual-current circuit breaker (RCCB), model A9Z64425, provides 3‑phase with neutral protection for 400 V AC systems. It is rated at 25 A with a residual current of 300 mA and a breaking capacity of 10 kA. Classified as Class B‑SI, this 4P ILD device offers reliable earth‑fault protection for commercial and light‑industrial installations that require 300 mA sensitivity on a 4‑wire system.
