- Monday - Friday 07:00 AM - 04:30 PM
The BA225J-P/Z3 REX 225KVA 600-277/480V 3PH ISO TRANSFORMER offers reliable voltage transformation for your industrial applications. Designed for seamless operation, it ensures optimal performance and efficiency. With robust construction and high-quality components, this transformer is perfect for powering equipment while maintaining a steady power supply. Ideal for various commercial uses.
At 225 KVA, 3-phase, this transformer can supply approximately 270 A on the 480V secondary (line-to-line) under full load. For practical sizing, a common rule of thumb is to load transformers to no more than 80% of nameplate KVA for continuous duty — roughly 180 KVA of sustained load. Always account for motor starting inrush and harmonic loads when sizing.
An isolation transformer provides galvanic separation between the primary (600V) and secondary (277/480V) windings. This eliminates a direct electrical path between the two circuits, reducing common-mode noise, suppressing voltage transients, and improving safety. It is especially beneficial when supplying sensitive electronic equipment, variable frequency drives (VFDs), or where ground fault management is critical.
Rex transformers are considered a legacy/hard-to-find product line, but Northern Breaker Group specialises in sourcing obsolete and discontinued electrical equipment across Canada. We can check stock for the BA225J-P/Z3 specifically, or help identify a compatible modern equivalent by KVA, voltage class, and enclosure type. Contact our Calgary, Edmonton, or Vancouver counter for a quote.
