BA150J-P/Z3 REX 150KVA 600-480/277V 3PH TRANSFORMER

The BA150J-P/Z3 delivers a 480/277V secondary in a 3-phase, 4-wire (wye) configuration. This allows it to simultaneously power 480V three-phase equipment (motors, HVAC, machinery) and 277V single-phase loads such as commercial fluorescent or LED lighting — making it a versatile choice for commercial and industrial facilities.

Yes, the Rex BA series are dry-type distribution transformers, meaning no cooling oil is required. They are suitable for indoor installation in ventilated electrical rooms or mechanical spaces. Adequate clearance for air circulation must be maintained per manufacturer guidelines and applicable Canadian Electrical Code (CEC) requirements. They are not rated for outdoor installation unless specifically enclosed for that purpose.

Northern Breaker Group specializes in obsolete and hard-to-find electrical equipment, including legacy Rex BA series transformers. Whether you need the BA150J-P/Z3 as a direct replacement or are looking for a compatible equivalent, our team can help source or cross-reference the right unit. Reach out to our Calgary, Edmonton, or Vancouver counters, or submit a quote request online.