Compact power, full insulation, built for the elements
Three-phase pad-mounted transformers are compact power centers for utility, commercial or industrial applications, designed to withstand many types of environments. The product features compact miniaturization, full insulation design, good sealing performance, strong anti-corrosion ability and flexible combination.
These transformers can be located outside or inside a building to provide an energy-efficient and safer solution. Fluid-filled units are available in a wide variety of configurations and can be paired with a broad range of accessories to meet both the most basic and the most complex specifications.
Three-Phase Pad-Mounted Transformer
75–2500 kVA · up to 34.5 kV primary · loop-feed or radial. Compact, tamper-resistant, and efficient enough for the strictest North American duty.
| Rated capacity | 75, 112.5, 150, 225, 300, 500, 750, 1000, 1500, 2000, 2500 kVA |
|---|---|
| High voltage (HV) | 4.16, 12.47, 13.2, 13.8, 22.86, 24.94, 34.5 kV (or as specified) |
| Low voltage (LV) | 208Y/120, 240, 480Y/277, 600Y/347 V (or as specified) |
| Efficiency — DOE (2016) | 99.03% (75 kVA) up to 99.53% (2500 kVA) |
| Efficiency — CSA (2023) | 98.95% (75 kVA) up to 99.49% (2500 kVA) |
| Cooling / type | Fluid-filled (oil-immersed), self-cooled (ONAN) |
| Connection | Dead-front or live-front; radial or loop-feed |
| Standards | ANSI/IEEE & IEC; UL Listed and CSA documentation available |
Indicative ranges from the manufacturer's selection guide. Final ratings, taps, impedance and accessories are configured to your project specification.
Single-Phase Pad-Mounted Transformer
Rated 15–250 kVA, the single-phase pad-mounted transformer serves residential subdivisions, light commercial and single-phase utility loads where a compact, ground-level enclosure is preferred over an overhead installation.
| Rated capacity | 15, 25, 37.5, 50, 75, 100, 167 kVA (15–250 kVA) |
|---|---|
| High voltage (HV) | 12.47/7.20, 13.2/7.62, 13.8/7.96, 34.5/19.92 kV |
| Low voltage (LV) | 120/240, 240/480, 347, 600 V |
| Efficiency — DOE (2016) | 98.82% (15 kVA) up to 99.33% (167 kVA) |
| Efficiency — CSA (2023) | up to 99.28% (167 kVA) |
Engineered to last in the field
Compact & full insulation
Miniaturized footprint with a fully insulated, dead-front design for safe placement at grade in public spaces.
Sealed & corrosion-resistant
Strong sealing performance and anti-corrosion construction stand up to rain, sun, salt and temperature swings.
High efficiency
Low-loss cores and windings meet DOE 2016 and CSA 2023, cutting lifetime energy cost and meeting code on day one.
Flexible configuration
Radial or loop-feed, dead-front or live-front, with a wide accessory range for basic to complex specifications.
Indoor or outdoor
Suitable for placement outside or inside a building, providing an energy-efficient and safer power solution.
Documented & certified
Type-test reports plus UL Certificates of Compliance and CSA field-evaluation documentation supplied with orders.
Where these transformers fit
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Need pad-mounted units for a US or Canadian project?
Send your kVA, voltages, taps and accessory schedule — we'll return an engineered quote with drawings and a DOE/CSA efficiency statement.