DA6112R DELTA 112KVA 480-120/208V NEMA3R

The DA6112R DELTA 112KVA 480-120/208V NEMA3R is a robust power transformer designed for reliable performance in various applications. Its NEMA 3R enclosure ensures durability against environmental elements, making it suitable for outdoor installations. This transformer efficiently converts voltage while maintaining safety and compliance, providing the power you need for your systems.

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Specifications
BrandDelta
Voltage480-120/208V
Frame / SeriesDA6
Catalogue #DELDA6112R
Sizing & Application

The DA6112R is a 112 KVA Delta dry-type transformer stepping down 480V primary to 120/208V secondary, suitable for powering three-phase and single-phase loads from a 480V distribution system. Its NEMA 3R rainproof enclosure makes it appropriate for outdoor or semi-protected installations such as rooftop mechanical rooms, yard-mounted pads, or covered service entrances. Typical applications include commercial HVAC systems, lighting panels, small industrial machinery, and general-purpose step-down service in buildings where 120/208V utilization is required from a 480V feeder.

At 112 KVA on a 480V primary, full-load current is approximately 135A — your primary overcurrent protection and feeder conductors must be sized accordingly (typically 150A or greater, derated per CEC ampacity tables). On the 120/208V secondary, full-load current is approximately 311A, so secondary conductors and the downstream panelboard main breaker must be sized to suit. A qualified electrician should perform the full calculation to CEC (Canadian Electrical Code) requirements for your specific installation.

NEMA 3R provides protection against falling rain, sleet, and ice formation, making the DA6112R suitable for outdoor use in sheltered or semi-exposed locations — for example, under a roof overhang or within a ventilated outdoor enclosure. For fully exposed installations subject to wind-driven rain or heavy snow accumulation, consult with our team to confirm whether additional protection measures or a higher NEMA rating is recommended for your site conditions.

Yes — the DA6112R's 120/208V secondary is a standard wye configuration that can feed a 120/208V three-phase, four-wire (3Ø 4W) panelboard directly, providing both three-phase 208V loads and single-phase 120V branch circuits. At 112 KVA this equates to roughly 311A available on the secondary, so your panelboard and main breaker must be rated appropriately. Contact our team with your panel specs and load schedule and we'll help confirm the right fit.

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