32 A, K-Curve, 1-Pole Supplemental Protector
The ABB S201-K32 is a 1-pole miniature circuit breaker rated at 32 A with a Trip Curve K characteristic, operating at 277 VAC and providing a 6 kA interrupting capacity. It is listed as a UL 1077 supplemental protector within the S200 series, intended for branch-circuit protection in control panels and industrial equipment where a K-curve trip response is specified.
What the Ratings Mean for Fit
The 32 A rating is the continuous current the breaker carries without tripping under normal conditions — sized for a 32 A load circuit, not a motor branch where inrush would be handled by a different curve. The K-curve (typically 8–12x rated current magnetic trip) is designed for inductive loads such as motors, transformers, and solenoids where moderate inrush is expected but a faster trip than a D-curve is desired. The 6 kA interrupting rating at 277 VAC means the breaker can safely clear a fault current up to 6,000 A without damage to itself or the panel — adequate for many commercial and light industrial installations where the available fault current is below that threshold.
Deployment Context
Snap-on DIN rail mounting per means the S201-K32 installs directly into a standard 35 mm DIN rail enclosure, sharing the rail with other S200 series breakers, contactors, and terminal blocks. As a UL 1077 supplemental protector, it is intended for use within an end-product enclosure (e.g., a control panel or machine) rather than as a service-entrance breaker — the UL 1077 listing certifies overcurrent protection for branch circuits inside equipment, not for the main building feed.