Eaton S20N11S07CU Transformer - UL Listed, 7.5 kVA
Part Number: S20N11S07CU
Quick Summary
Eaton S20N11S07CU transformer delivers reliable step-down power for control panels in industrial settings. Engineers frequently struggle with space constraints, enclosure protection, and flexible installation in varying environments. UL Listed safety certification and a rugged NEMA 3R enclosure support both indoor and outdoor applications, with copper windings for durability. With a 7.5 kVA rating and 60 Hz operation, this unit helps maintain stable voltages across critical loads, reducing downtime and rework. Leveraging its epoxy encapsulated (EP) design, it resists moisture and dust, while easy mounting and the 178 frame size simplify retrofit and OEM integration.
Product Information
Extended Description
S20N11S07CU Eaton: Eaton, general purpose encapsulated transformer, ep, single-phase, pv: 240 x 480v, taps: none, sv: 120/240v, 115°c, 7.5 kva, cu windings, frame: 178, indoor-outdoor
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S20N11S07CU
UPC
786680032400
Product Length/Depth
9.89 in
Product Height
16 in
Product Width
10.38 in
Product Weight
139 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
Copper
Design
EP
Enclosure
NEMA 3R
Frame
178
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
115 °C rise
Volt ampere rating
7.5 kVA
Weathershield
Indoor-Outdoor
Feature: General-purpose encapsulated construction with copper windings and epoxy encapsulation. Impact: Improves moisture resistance, insulation integrity, and long-term reliability in challenging environments. Application: Ideal for control panels, automation cabinets, and equipment racks in manufacturing facilities. Feature: 7.5 kVA rating with 240/480 V primary and 120/240 V secondary. Impact: Supports multiple loads from a single transformer, reducing parts count and space. Application: Suitable for machine control and panel boards in automation lines. Feature: 60 Hz single-phase operation and 178 frame, with an indoor-outdoor NEMA 3R enclosure. Impact: Enables versatile installation across indoor locations or protected outdoor sites without additional housings. Application: Common in industrial environments where weather exposure is a concern. Feature: Copper windings and 115 °C rise specification. Impact: Delivers efficient power transfer with durable insulation and higher thermal tolerance. Application: Critical loads in space-constrained panels that require dependable performance under elevated temperatures. Feature: UL Listed certification and 139 lb weight with epoxy encapsulation. Impact: Ensures compliance and robust protection against moisture ingress, reducing maintenance needs. Application: OEMs and service teams can rely on fast, compliant retrofits in existing electrical footprints. Feature: Indoor-outdoor Weathershield, 9.89 in L × 10.38 in W × 16 in H footprint. Impact: Compact footprint simplifies panel design and mounting in tight enclosures. Application: Ideal for converters and control circuits in compact electrical rooms or outdoor-rated cabinets.
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FAQs
Yes. With a compact 178 frame and a footprint of 9.89 in by 10.38 in by 16 in, this transformer fits many standard control panel cutouts. Its indoor-outdoor NEMA 3R enclosure supports versatile mounting, while copper windings and epoxy encapsulation enhance durability in retrofit projects. Ensure panel clearance and wiring connections follow the 3A wiring specification for reliable operation.
The unit provides a 240/480 V primary and a 120/240 V secondary with a 60 Hz, single-phase configuration. It is rated at 7.5 kVA, delivering consistent power to multiple loads within panelboards. Copper windings and an 115 °C rise rating support efficient heat dissipation, ensuring stable output under typical industrial loads.
Ideal for machine control panels, automation cabinets, and industrial equipment distributed across manufacturing, packaging, and processing lines. Its indoor-outdoor design suits plants with mixed environments, while the EN-type epoxy encapsulation supports longevity in harsh conditions. This makes it a good fit for OEMs seeking a reliable, compact 7.5 kVA solution.
The S20N11S07CU is UL Listed, providing safety compliance for electrical devices in industrial settings. It features a NEMA 3R enclosure suited for indoor-outdoor use, protecting internal windings from moisture, dust, and incidental weather exposure. These certifications and ratings support regulatory adherence and safer field installation.
Expect low maintenance due to epoxy encapsulation and copper windings, which reduce moisture ingress and insulation wear over time. The transformer’s robust 7.5 kVA rating and 139 lb weight support reliable long-term operation with fewer field failures, translating to reduced downtime and improved return on investment for ongoing automation projects.