Eaton S27N12S01 General-Purpose Encapsulated Transformer - UL Listed
Part Number: S27N12S01
Quick Summary
Eaton General-Purpose Encapsulated Transformer delivers reliable power isolation for control panels and industrial equipment, enabling safe, compact voltage conversion in demanding environments. Too many installations suffer moisture ingress, vibration, or improper wiring that leads to nuisance trips and unplanned downtime, gnawing into maintenance budgets. UL Listed safety certification, combined with a rugged NEMA 3R enclosure, supports reliable indoor-outdoor operation and compliance across industrial facilities. The unit also delivers 1 kVA capacity from 277 V to 120 V at 60 Hz, with aluminum windings and an EP encapsulated design, providing long service life. This translates to easier installation, reduced downtime, and predictable performance in control panels, machines, and facility power centers.
Product Information
Extended Description
S27N12S01 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 59A, 60 Hz, single-phase, 277 V, 120 V, NONE, 115 °C rise, 1 KVA, indoor-outdoor, 511DD
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S27N12S01
UPC
786680060632
Product Length/Depth
5.75 in
Product Height
11.28 in
Product Width
5.99 in
Product Weight
28 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
59A
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
511DD
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
277 V
Secondary Voltage
120 V
Temperature rise
115 °C rise
Volt ampere rating
1 kVA
Weathershield
Indoor-Outdoor
Feature → Business Impact → Application: The encapsulated EP design with aluminum windings reduces weight and improves insulation reliability, enabling easier handling during installation and longer life in demanding environments. This translates to lower labor costs and fewer field failures in control panels and automation cabinets. The 1 kVA rating supports typical control circuits and small machine loads, delivering consistent voltage conversion for reliable equipment operation in factory floors and building systems. Feature → Business Impact → Application: NEMA 3R enclosure provides indoor-outdoor protection, safeguarding against rain, corrosion, and debris. This reduces weather-related downtime and allows placement in outdoor electrical spaces or damp locations, ideal for outdoor equipment enclosures and utility panels. Feature → Business Impact → Application: UL Listed certification reinforces safety compliance, simplifying audits and regulatory approvals, while the 60 Hz single-phase design aligns with standard plant power distribution, reducing integration risk in existing electrical distributions. Feature → Business Impact → Application: Wiring connection 511DD and a temperature rise of 115 °C support robust, straightforward installation and thermal margin, permitting reliable operation in warm environments and helping meet maintenance intervals. Feature → Business Impact → Application: 277 V primary and 120 V secondary outputs match common control circuits, enabling plug-and-play substitution for legacy transformers and reducing project lead times in control panel upgrades and automation retrofits. Feature → Business Impact → Application: Compact dimensions (5.75 in depth, 11.28 in height, 5.99 in width) and 28 lb weight simplify mounting in tight spaces, enabling faster installs and easier service in machine controls, panel boards, and electrical closets. Feature → Business Impact → Application: 60 Hz, single-phase operation ensures compatibility with standard building and industrial power distribution, supporting energy-efficient operation and predictable performance for automation and distribution panels. Feature → Business Impact → Application: Weathershield Indoor-Outdoor capability ensures reliability across varying environments, reducing the need for separate weatherproof housings and lowering total installed cost in mixed-use facilities.
Get a Quick Quote for a Eaton S27N12S01
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton S27N12S01?
Enquire Now
FAQs
Begin by de-energizing the panel and verifying clearances. Mount the transformer in a suitable location within the enclosure, connect the primary leads to the 277 V supply, and attach the secondary leads to the 120 V circuits using the 511DD wiring scheme. Fasten securely, observe polarity, and verify terminal torque per the Eaton spec sheet. Finally, re-energize and test with load to confirm stable operation.
The S27N12S01 is a 1 kVA transformer with a 277 V primary and a 120 V secondary, rated for 60 Hz single-phase operation. This configuration suits common control circuits and low-voltage loads in industrial automation and building systems, providing reliable voltage stepping for midrange panel requirements.
Yes. The transformer uses an EP encapsulated design housed in a NEMA 3R enclosure, described as indoor-outdoor. This construction protects against moisture, dust, and weather exposure, enabling safe operation in exterior panels or damp spaces commonly found in industrial sites.
The S27N12S01 carries UL Listed certification, which supports recognized safety and compliance for installation in commercial and industrial settings. The NEMA 3R enclosure further reinforces protection against weather elements. When planning audits or regulatory checks, these features help streamline approvals for control panels and distribution boards.
Expect improved reliability and reduced downtime due to UL safety compliance and rugged indoor-outdoor protection. The 1 kVA rating matches typical control loads, while the compact size and lighter weight simplify installation and service. Over time, this translates to lower maintenance costs, fewer field failures, and faster project completion for automation upgrades.