ABB S3N-3P-20A-600V is a three-pole SACE Isomax molded‑case circuit breaker rated for 600 V AC and 500 V DC, with a 20 A nominal current. Part of the S3N family, it provides thermal‑magnetic protection with long‑time and instantaneous trip functions and is offered in bolt‑on mounting with a non‑interchangeable trip unit. It carries short‑circuit ratings of 25 kA at 480 V and 35 kA at 415 V, and is described as suitable for reverse‑feed configurations in industrial electrical distributions. This device protects three‑phase circuits in panels and equipment operating up to 600 V.
