BA15B-P/Z3 REX 15KVA 208-277/480V 3PH TRANSFORMER

The BA15B-P/Z3 REX 15KVA 208-277/480V 3PH Transformer is a robust solution designed for efficient power distribution in industrial applications. With a power rating of 15KVA, this transformer ensures reliable performance across three phases. Its compact design and high-quality construction make it ideal for various electrical setups, providing versatility and reliability.

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Specifications
BrandRex
Voltage208-277/480V
Frame / SeriesBA15B-P/Z3
Catalogue #REXBA15BPZ3
Sizing & Application

The Rex BA15B-P/Z3 is a 15 KVA, 3-phase dry-type transformer rated for 208–277V / 480V, making it well suited for stepping voltage up or down between common North American industrial distribution voltages. At 15 KVA, it is typically used to feed motor control centres, lighting panels, small machinery loads, or branch distribution boards in commercial and light industrial facilities.

  • Primary: 480V 3-phase; Secondary: 208–277V 3-phase (buck/boost range)
  • Suitable for indoor industrial and commercial panel-feed applications where a compact 3-phase step-down or step-up is required
  • Verify your load calculations and enclosure/ventilation requirements before installation — send us your application details and we'll confirm suitability.

At 15 KVA, 3-phase, the BA15B-P/Z3 can supply a continuous load of up to 15,000 VA across three phases. On a 208V secondary, that works out to roughly 41.6A per phase (line current). It is best practice to size transformer load at no more than 80% of nameplate for continuous duty, giving you approximately 12 KVA of reliable continuous capacity. Always verify your actual connected load before commissioning.

The BA15B-P/Z3 is a dry-type transformer designed for indoor or protected industrial environments. It is not rated for direct outdoor exposure. If outdoor installation is required, it must be housed in a suitably rated weatherproof enclosure meeting local Canadian Electrical Code (CEC) requirements. Contact us if you need guidance on enclosure options.

Rex transformers can be difficult to locate through standard distribution channels. Northern Breaker Group specialises in obsolete and hard-to-find electrical equipment, and we maintain sourcing networks across Canada and internationally. Reach out to our Calgary, Edmonton, or Vancouver counters for availability and to request a quote — we're happy to help track down the BA15B-P/Z3 or a suitable replacement if needed.

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