ABB S201UK4A is a 1‑pole miniature circuit breaker from ABB’s S200/S201 family, intended for DIN‑rail mounting in low‑voltage circuits. It is rated 4 A with a Curve K trip characteristic for 230/240 V AC applications and provides a short‑circuit breaking capacity up to 10 kA. This compact device protects a single branch circuit in control panels and electrical distribution assemblies, delivering thermal‑magnetic overcurrent protection in industrial and commercial installations.
