CD6A0300VRA6XXBD DELTA 300KVA 600-480/277V NEMA3R

The CD6A0300VRA6XXBD Delta 300kVA transformer is designed for efficiency and reliability, featuring a voltage output of 600-480/277V. Built to NEMA 3R standards, it ensures optimal performance in outdoor environments. Ideal for commercial and industrial applications, this transformer provides robust power solutions tailored to meet demanding electrical needs.

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SKU DELCD6A0300VRA6XXBD Categories , ,
Specifications
BrandDelta
Voltage600-480/277V
Catalogue #DELCD6A0300VRA6XXBD
Sizing & Application

The Delta CD6A0300VRA6XXBD is a 300 kVA dry-type transformer rated 600V primary / 480–277V secondary (3-phase, 4-wire wye), housed in a NEMA 3R enclosure for outdoor or semi-protected indoor installations. At 300 kVA it is well-suited for commercial and industrial step-down applications — feeding 480V motor loads, 277V lighting panels, or mixed distribution boards where a Canadian 600V service must be reduced to a utilization voltage.

  • Typical uses: rooftop mechanical rooms, outdoor pad-mount installations, industrial plant distribution, large retail or institutional buildings.
  • NEMA 3R rating provides protection against rain, sleet, and external ice formation — confirm site conditions (e.g., coastal salt air, extreme cold) with our team to ensure the enclosure rating meets your environment.

Not sure whether 300 kVA is the right size for your load, or need to confirm secondary wiring configuration? Send us your load schedule and we'll help you verify the fit.

Yes. The 480/277V secondary is a 3-phase, 4-wire wye configuration — 480V line-to-line and 277V line-to-neutral. This is the standard utilization voltage for commercial and industrial buildings in Canada and North America, supporting 480V three-phase motor loads and 277V single-phase lighting simultaneously.

The NEMA 3R enclosure is rated for outdoor use and protects against rain, sleet, and ice formation on the enclosure exterior, making it appropriate for most Canadian outdoor installations. For harsh environments — such as coastal locations with salt spray, or sites with extreme wind-driven precipitation — you may want to evaluate whether a NEMA 3R rating is sufficient or if additional shielding is required. Contact our team to discuss your specific site conditions.

Large kVA dry-type transformers like this 300 kVA Delta unit can have variable lead times depending on current stock and manufacturer scheduling. Northern Breaker Group specialises in sourcing hard-to-find and industrial-grade electrical equipment across Canada. Request a quote through our Calgary, Edmonton, or Vancouver counters and we'll confirm current availability and expected lead time for your project.

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