BC75H-M/Z3 REX 75KVA 480-120/208V 3PH ISO TRANSFORMER
The BC75H-M/Z3 REX 75KVA 480-120/208V 3PH ISO TRANSFORMER is designed for efficient power distribution in three-phase applications. With its robust construction and reliable performance, this transformer ensures optimal voltage management and safety for your electrical systems. Ideal for industrial and commercial use, it meets various operational demands with ease.
At 75 kVA on a 208V three-phase secondary, the BC75H-M/Z3 delivers approximately 208A of full-load secondary current (75,000 VA ÷ (208V × √3) ≈ 208A). Always factor in a service factor and verify your actual connected load before sizing overcurrent protection and conductors.
Yes — the "ISO" designation indicates this is an isolation transformer, meaning the primary and secondary windings are electrically isolated with no direct conductive path between them. This is important for protecting sensitive equipment from line-side noise, transients, and ground faults, and is commonly required in healthcare, data centre, and precision manufacturing environments.
Rex transformers, including the BC75H-M/Z3 frame, can be difficult to source as the line has seen limited distribution in Canada. Northern Breaker Group specializes in obsolete and hard-to-find electrical equipment. Contact our Calgary, Edmonton, or Vancouver counter — we can check current stock, locate a compatible cross-reference, or help identify a direct replacement transformer at the same kVA and voltage rating.
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