Product Description
V48M28T1216 from Eaton is a general purpose, energy-efficient ventilated dry-type transformer with aluminum windings in a rugged NEMA 2 indoor enclosure. This 112.5 kVA, 3-phase unit steps 480V delta down to 208Y/120V, with a 150 °C temperature rise, 220 °C insulation system, and primary taps for voltage correction.
Catalog #: V48M28T1216
kVA: 112.5 kVA
Primary: 480V Δ
Secondary: 208Y/120V
Phase / Freq: 3-phase, 60 Hz
Temperature Rise: 150 °C (220 °C insulation)
Sound Level: NEMA ST-20
Taps: 2 × +2.5%, 4 × −2.5%
Enclosure: NEMA 2, ventilated
Windings: Aluminum
Frame: FR943
Wiring Connection: 280B
Size (H×W×D): 51" × 34.5" × 31.5"
Weight: 970 lb
UPC: 786680147234
Optional Weathershield: WS60
Perk: Free shipping on orders over $250
Product Benefits
- Reliable 208Y/120V distribution from a 480V system—ideal for lighting and receptacle panels.
- Energy-efficient design meets DOE 2016 standards to help reduce operating costs.
- Quiet operation with NEMA ST-20 sound performance for occupant-friendly installations.
- Rugged indoor construction—ventilated NEMA 2 enclosure and aluminum windings for dependable service.
Key Features
- 112.5 kVA, 3-phase general purpose dry-type transformer.
- Primary taps: 2 at +2.5% and 4 at −2.5% for feeder voltage correction.
- 150 °C rise with 220 °C insulation system.
- FR943 frame; wiring connection 280B.
- UL Listed; compliant with 10 CFR Part 431 (2016).
- Optional weathershield WS60 if added protection is needed.
Specifications
Technical Specs
| Type | Energy-efficient ventilated dry-type transformer |
| Catalog Number | V48M28T1216 |
| kVA Rating | 112.5 kVA |
| Phase / Frequency | 3-phase / 60 Hz |
| Primary Voltage | 480V delta |
| Secondary Voltage | 208Y/120V |
| Sound Level | NEMA ST-20 |
| Taps | 2 at +2.5%, 4 at −2.5% |
Physical Specs
| Enclosure | NEMA 2, ventilated (indoor) |
| Windings | Aluminum |
| Frame | FR943 |
| Mounting | Floor or wall, upright only |
| Dimensions (H×W×D) | 51 in × 34.5 in × 31.5 in |
| Weight | 970 lb |
| Wiring Connection | 280B |
| Optional Weathershield | WS60 |
Performance & Compliance
| Temperature Rise | 150 °C (220 °C insulation) |
| Efficiency | Meets DOE 2016 (10 CFR Part 431) |
| Certification | UL Listed |
| UPC | 786680147234 |
| Warranty | 1 year from installation or 18 months from shipment (whichever comes first) |
Application Examples
- Step-down from 480V distribution to 208Y/120V for lighting and receptacle panels
- Offices, schools, and retail prioritizing quiet, efficient operation
- Shops/warehouses supplying mixed 208V and 120V loads
- Projects needing fine voltage correction via ±2.5% taps
Installation Tips
- Mount upright only with clear ventilation on all sides; follow NEC and local codes.
- Set the primary tap position to match measured feeder voltage before energizing.
- Bond and ground per code; land neutrals correctly when serving 120V circuits.
- Use indoors (NEMA 2); specify optional WS60 weathershield only if conditions require added protection.
Frequently Asked Questions
Q: What are the input and output voltages?
The primary is 480V delta; the secondary is 208Y/120V for three-phase and 120V branch loads.
Q: Is this transformer indoor or outdoor rated?
It ships in a ventilated NEMA 2 indoor enclosure.
Q: Does it meet current efficiency standards?
Yes, it meets DOE 2016 (10 CFR Part 431) efficiency requirements.
Q: What tap settings are available?
There are two taps at +2.5% and four taps at −2.5% for feeder voltage correction.
Q: How quiet is it?
It conforms to NEMA ST-20 sound limits for dry-type transformers.
Q: What winding material is used?
Aluminum windings are used for reliable performance.
Q: What are the dimensions and weight?
Approx. 51 in × 34.5 in × 31.5 in and 970 lb.
Q: What frame and wiring connection are used?
It uses the FR943 frame and wiring connection 280B.
Q: Is a weathershield available?
Yes, the optional WS60 weathershield is listed for this model.
