Eaton S20N11B07 General-Purpose Transformer - UL Listed
Part Number: S20N11B07
Quick Summary
Eaton General-Purpose Encapsulated Transformer powers control panels with reliable, isolated power for industrial applications. Many engineers face enclosure and mounting challenges in space-constrained facilities, especially when weather-rated protection and rugged construction are required. This transformer features a UL Listed, NEMA 3R enclosure and delivers 7.5 kVA with an 80 °C rise, suitable for indoor-outdoor service. With a 60 Hz, single-phase design and a primary of 240/480 V feeding a 120/240 V secondary, it supports standard panel wiring without sacrificing efficiency. The unit also aligns with Eaton support and warranty policies, helping maintenance teams reduce downtime while ensuring safety and performance expectations are met. It’s a practical choice for machine builders and electrical distributors seeking reliable, scalable power conversion.
Product Information
Extended Description
S20N11B07 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 179, 60 Hz, single-phase, 240 V, 480 V, 120/240 V, NONE, 80 °C rise, 7.5 KVA, indoor-outdoor, 3A
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11B07
UPC
786680057847
Product Length/Depth
10.52 in
Product Height
19 in
Product Width
13.38 in
Product Weight
525 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
179
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
3A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
80 °C rise
Volt ampere rating
7.5 kVA
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: 7.5 kVA power rating provides adequate headroom for mid-size load clusters in manufacturing panels, improving uptime and reducing the need for oversized transformers on the line; Application: panels in assembly lines and machine decks where steady control power is essential. Feature → NEMA 3R enclosure with indoor-outdoor capability translates to rugged protection against weather and dust ingress, enabling installation in loading docks or protected outdoor kiosks without separate enclosures; Application: outdoor control stations and weather-exposed equipment rooms. Feature → 240/480 V primary and 120/240 V secondary voltages offer flexible integration across mixed voltage systems, simplifying wiring and reducing the number of transformers required; Application: integration in mixed-volt distribution networks and retrofit projects. Feature → Aluminum coil construction reduces weight and material cost relative to copper, supporting long-term maintenance efficiency and lower lifetime costs; Application: high-volume panel builds where thermal and electrical performance must be balanced with total cost of ownership. Feature → 60 Hz single-phase operation aligns with standard utility and equipment power, minimizing the need for phase converters and improving compatibility with common industrial controls; Application: general purpose control panels, conveyors, and machine tools. Feature → UL Listed certification and NEMA 3R enclosure deliver compliance and reliability, reducing engineering review time and speeding field deployment; Application: compliance-driven installations in manufacturing and distribution environments. Feature → Eaton warranty of one year from installation or eighteen months from shipment provides a clear risk-reduction path for procurement teams and service partners; Application: project planning and maintenance budgeting in OEM or end-user facilities.
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FAQs
The S20N11B07 uses a NEMA 3R enclosure designed for indoor-outdoor service, providing weather and dust protection suitable for loading docks, protected outdoor cabinets, and industrial panels. Ensure mounting on a stable surface with adequate clearance for ventilation and easy access for maintenance; consider forklift access and spacing for service personnel given its 525 lb weight.
This unit has a 7.5 kVA VA rating with a 240/480 V primary and a 120/240 V secondary, operating at 60 Hz in a single-phase configuration. This voltage pairing supports common control panel architectures and enables straightforward compatibility with mixed-volt equipment.
Yes. With a 7.5 kVA rating, NEMA 3R enclosure, UL Listed certification, and indoor-outdoor capability, it is well-suited for manufacturing distribution panels, machine control panels, and equipment rooms requiring reliable power isolation and weather resistance.
The transformer is UL Listed and features a NEMA 3R enclosure, signaling compliance with UL safety standards and suitability for indoor-outdoor applications. This reduces engineering validation time and aligns with industry best practices for control power in harsh or variable environments.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever comes first. This offers a clear risk reduction for procurement and maintenance budgeting. Plan for routine inspection of enclosure integrity, coil insulation, and mounting hardware to maximize uptime and extend service life.