ABB SACE S4 PR211 Molded Case Circuit Breaker

ABB SACE Isomax S4N MCCB, PR211/P electronic trip, is a two‑pole molded case circuit breaker rated 250 A at 600 V, designed for low‑voltage protection in switchboards and distribution panels. It integrates a microprocessor‑based PR211/P release that provides overload protection with distinct long‑time and instantaneous trip functions, enabling precise coordination with upstream devices. This 2‑pole version (S4N‑2P‑250A) features bolt‑on mounting with front terminals and offers a short‑circuit current rating up to 25 kAIC, suitable for reverse‑feed configurations in appropriate layouts. As part of ABB’s Isomax S4 family, it supports reliable motor and general protection schemes and is intended for installations that require compact, high‑reliability protection within modular switchgear.