ABB TEY340ST12

The ABB TEY340ST12 is a compact, bolt-on circuit breaker designed for grounded 480Y/277 Vac systems. This one-inch wide per pole breaker is built to fit a variety of setups, thanks to its bolt-on mounting base that makes it adaptable as a lug-lug breaker. Featuring a quick-make/quick-break mechanism and common trip bars, the TEY series ensures reliable operation and clear trip indication for enhanced safety. Available in 1, 2, and 3 pole configurations, these breakers can also be equipped with auxiliary contacts and shunt trip options for added functionality. Distributed by BSP Automation, the TEY340ST12 is a solid choice for those needing a robust MCCB with a 40A rating and 120-277VAC shunt trip capability—basically, a no-nonsense breaker that gets the job done right.