ABB SN160 Circuit Breaker

ABB SACE SN160 is a 160 A, 3-pole molded-case circuit breaker rated for up to 690 V, and is available with a shunt-release option for remote tripping. It is part of ABB's SN family (originally ASEA Brown Boveri) and is featured in retrofit kits as SN160/250 — XT4S 250 for 3-pole configurations, underscoring its role in upgrading legacy switchgear. ABB's technical catalogs also list 0-Modul SN160 with In = 160 A, confirming the fixed current rating within ABB's interchangeability framework for XT4S replacements. The SN160 designation appears in catalog and retrofit listings to indicate compatibility with XT4S upgrades and three-pole installations. This variant is encountered in 690 V distribution networks where compact protection is needed, and shunt-release variants enable automatic remote operation in protective schemes.