Eaton S20L11S25LS49 Encapsulated Transformer - UL Listed
Part Number: S20L11S25LS49
Quick Summary
The S20L11S25LS49 encapsulated transformer delivers dependable power isolation for control panels and machinery in industrial plants. Engineers often struggle with voltage fluctuations, heat, and noise that compromise performance and increase maintenance costs. UL Listed certification, a NEMA 3R enclosure, and a 25 kVA rating enable compliant, reliable operation in demanding environments. This general-purpose encapsulated transformer supports straightforward panel integration, reduced wiring complexity, and long-term energy efficiency. With aluminum windings and a compact frame, it suits space-constrained installations while meeting 60 Hz single-phase systems.
Product Information
Extended Description
S20L11S25LS49 Eaton: Eaton General-Purpose Encapsulated Transformer, EP, Single-phase, PV: 240 X 480V, Taps: 2 at -5% FCBN X 4 at -2.5% FCBN, SV: 120/240V, 115°C, 25 kVA, Al windings, Frame: 182, Indoor-Outdoor.
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20L11S25LS49
UPC
786680053665
Product Length/Depth
14.12 in
Product Height
23.31 in
Product Width
16.35 in
Product Weight
380 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
Catalog Notes
Low sound equal to 49 dB
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
182
Tap size
2 at -5% FCBN x 4 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
23A
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Volt ampere rating
25 kVA
Modification 1
Low sound 49 dB
Weathershield
Indoor-Outdoor
Paragraph 1: Feature: The 25 kVA general-purpose encapsulated transformer delivers reliable isolation for critical loads in demanding control panels and automation racks. Business impact: Its rugged insulation and robust construction minimize unplanned downtime by maintaining steady voltage under load transients. Application: Ideal for machine tools, conveyors, and process equipment across industrial facilities where space is at a premium. Paragraph 2: Feature: Dual primary voltages of 240/480 V and secondary 120/240 V, combined with taps at -5% and -2.5% FCBN, offer flexible voltage regulation. Business impact: This adaptability reduces the need for external regulators and simplifies panel wiring, lowering installation and maintenance costs. Application: Retrofit projects and new builds that demand reliable performance across varying supply conditions. Paragraph 3: Feature: NEMA 3R indoor-outdoor enclosure with Weathershield design and a low sound rating of 49 dB. Business impact: Weather resistance and quiet operation reduce environmental risk and acoustic downtime, enabling closer siting to critical loads. Application: Outdoor panels, damp environments, or shared spaces where noise and weatherproofing matter. Paragraph 4: Feature: Aluminum windings housed in Frame 182 with a 23A wiring connection offering solid electrical performance and easy termination. Business impact: Aluminum windings provide corrosion resistance and reduced weight, simplifying transport and installation while preserving efficiency. Application: New installations and retrofits where ease of wiring and space optimization are priorities. Paragraph 5: Feature: 60 Hz single-phase design aligns with common industrial power systems and standard motor control architectures. Business impact: Seamless integration minimizes engineering effort and accelerates commissioning. Application: Control panels, automation cabinets, and equipment sharing power infrastructure. Paragraph 6: Feature: UL Listed certification and Eaton's warranty coverage. Business impact: Safety compliance and predictable lifecycle costs with a one-year warranty from installation or 18 months from shipment. Application: Environments requiring robust vendor support and documented reliability.
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FAQs
The transformer features 240/480 V primary voltage and 120/240 V secondary voltage, designed for single-phase operation at 60 Hz. It also includes taps at -5% and -2.5% FCBN to fine-tune output under fluctuating supply conditions.
Yes. It comes in a NEMA 3R enclosure with Weathershield design and an Indoor-Outdoor rating, plus UL Listed safety certification, enabling reliable operation in damp or outdoor environments.
It uses a Frame 182 footprint with a 23A wiring connection, aluminum windings, and a compact form factor to simplify panel mounting and lead routing. Its 60 Hz single-phase design aligns with standard facility power systems.
The unit is UL Listed, and Eaton provides a warranty policy of one year from installation or eighteen months from shipment, whichever occurs first, improving lifecycle cost predictability.
Best for control panels, automation racks, and machine tools requiring reliable isolation and flexible voltage regulation. The 25 kVA rating, low-noise operation, and robust enclosure reduce maintenance and energy costs, improving uptime and return on investment over the equipment lifecycle.