Industrial S273 Three-Phase Molded-Case Circuit Breaker

ABB's S273 is a three‑pole molded‑case circuit breaker rated 16 A at up to 480Y/277 VAC, designed for industrial power distribution. The compact, molded‑case design fits standard MCCB enclosures and provides protection for three‑phase circuits in distribution panels and motor feeders in commercial and industrial environments. As part of ABB's S273 family, it delivers reliable overload and short‑circuit protection for 3‑phase equipment while offering straightforward installation and replacement in existing ABB or compatible systems. When selecting a replacement or spare, match the S273's footprint and trip characteristics to the target panel to ensure a safe, code‑compliant fit in a 3P, 480 VAC distribution scheme.