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The ABB S271 K1A is a 1-pole miniature circuit breaker from the System pro M S270 series, rated at 1 A with a K tripping characteristic. It provides thermal overload and magnetic short-circuit protection and supports 230/400 V AC operation with a 6 kA breaking capacity.
Fluke BK120 SmartTrace Breaker Finder accurately locates circuit breakers and detects AC voltage with NCV mode, socket testing, and visual alerts.
Tests for correct wiring, open ground, reverse polarity, open hot, open neutral, hot on neutral, hot and ground reversed with open hot and ground fault interruption in 3‑Wire, 120Volt AC.