This resin-encapsulated (potted) single-phase transformer steps down 240V or 480V primary to 120/240V secondary. The fully encapsulated core and coils make it the right choice for dusty, moist, vibration-prone, or corrosive environments where open-core transformers would fail prematurely.
Transformer Specifications
| Primary Voltage | 240V × 480V |
| Secondary Voltage | 120/240V |
| Phase | Single-Phase |
| Construction | Fully resin-encapsulated (potted) |
| Enclosure | NEMA 3R (indoor/outdoor rated) |
| Frequency | 60 Hz |
Why Encapsulated (Potted)?
Standard open-core transformers are vulnerable to moisture, dust, and corrosive gases. Resin encapsulation completely seals the core and coil assembly — eliminating ingress paths. This is the correct choice for:
- Agricultural and farm installations (moisture, dust, ammonia)
- Outdoor enclosures and NEMA 3R applications
- Food processing and washdown environments
- Chemical plants and refineries
- Marine and coastal environments
- High-vibration installations (near compressors, presses, mills)
Common Applications
- Control circuit power in industrial panels exposed to the elements
- Step-down power for outdoor lighting and instrumentation
- Auxiliary power in outdoor pump stations and grain handling equipment
- Replacement for failed open-core transformers in harsh environments
KVA Selection Guide
KVA = (load amps × secondary voltage) ÷ 1000. Size at 125% of calculated load for continuous duty. Call (800) 417-6568 if you need help selecting the correct KVA rating for your application.
Questions? Call (800) 417-6568 — our team specs transformers for industrial applications every day.
