Eaton S48D29S51 Encapsulated Transformer - UL Listed
Part Number: S48D29S51
Quick Summary
Eaton S48D29S51 encapsulated transformer delivers control power for industrial automation panels. This compact, reliable device helps engineers simplify panel design while meeting demanding installation requirements. UL Listed certification and a NEMA 3R enclosure support safe indoor-outdoor operation, and the aluminum coil enhances durability and heat management. For panel builders and maintenance teams, the 0.5 kVA rating with 480 V to 208 V output provides a predictable, efficient power source for relays, sensors, and PLCs. The transformer aligns with common low-voltage needs in automated equipment, offering easy integration with standard wiring practices and Eaton-compatible components to streamline procurement and service planning.
Product Information
Extended Description
S48D29S51 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 57, 60 Hz, single-phase, 480 V, 208 V, 2 at +2.5% FCAN, 2 at -2.5% FCBN, 115 °C rise, 0.5 KVA, indoor-outdoor, 517E
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S48D29S51
UPC
786680083211
Product Length/Depth
4.91 in
Product Height
8.97 in
Product Width
4.87 in
Product Weight
16 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
57
Tap size
2 at +2.5% FCAN, 2 at -2.5% FCBN
Type
General-Purpose Encapsulated Transformer
Wiring connection
517E
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
208 V
Temperature rise
115 °C rise
Volt ampere rating
0.5 kVA
Weathershield
Indoor-Outdoor
Compact, weight-conscious design optimizes cabinet space and handling, delivering 0.5 kVA of power in a footprint that measures 4.91 in deep, 8.97 in tall, and 4.87 in wide while weighing 16 lb. This translates to faster installation, reduced shipping costs, and easier retrofit projects in busy industrial environments. The aluminum coil improves heat dissipation and corrosion resistance, lowering maintenance intervals and extending service life in harsh conditions, which reduces total cost of ownership and downtime resistance in critical control circuits. NEMA 3R enclosure and indoor-outdoor capability provide robust protection against dust, moisture, and temperature swings, enabling reliable operation in both panel rooms and exposed cabinets without additional weatherproofing. The 60 Hz, single-phase configuration with 480 V primary and 208 V secondary supports a wide range of control loads, including relays, timers, and PLC I/O power, with straightforward wiring via the 517E connection. Adjustable taps at +2.5% FCAN and -2.5% FCBN offer practical voltage regulation to compensate for supply variability, improving downstream device performance and reducing nuisance trips. The UL Listed certification and a one-year warranty (or 18 months from shipment) provide supplier confidence, while the 57 frame and built-in mounting conventions simplify compatibility with standard control panels and Eaton accessory ecosystems, accelerating project timelines and simplifying spare-part planning.
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FAQs
Install the S48D29S51 within a NEMA 3R-rated enclosure to protect the 480 V to 208 V circuitry from dust and moisture. Use the 517E wiring connection for standard control wiring and ensure mounting fits within the 4.91 in depth by 8.97 in height envelope. Account for the unit’s 16 lb weight during cabinet planning and mounting.
Verify a 0.5 kVA rating, 60 Hz frequency, single-phase operation, primary voltage of 480 V, secondary voltage of 208 V, and the voltage taps at +2.5% FCAN and -2.5% FCBN. Confirm aluminum coil construction for thermal performance and the 57 frame for mounting compatibility with standard panels.
Yes. The transformer features an indoor-outdoor Weathershield with a NEMA 3R enclosure, enabling reliable operation in varied environments without additional protective enclosures. This makes it suitable for outdoor-rated control cabinets and semi-exposed installations while maintaining electrical safety and performance.
The unit carries UL Listed certification and a one-year warranty from installation (or eighteen months from shipment, whichever occurs first). This provides assurance for maintenance planning, regulatory compliance, and service cost forecasting within typical industrial procurement cycles.
Best suited for control panels, PLC power supplies, relay racks, and sensors requiring a stable 208 V control feed from a 480 V primary. Its combination of 0.5 kVA capacity, voltage taps for minor regulation, and rugged enclosure makes it ideal for retrofit and new-build automation cabinets in manufacturing, process, and material handling environments.