Eaton S10N04A81N General-purpose transformer - UL Listed
Part Number: S10N04A81N
Quick Summary
Eaton S10N04A81N general-purpose encapsulated transformer powers 12/24 V control circuits in industrial panels. In many facilities, voltage drift and surges disrupt relays, sensors, and PLC inputs, elevating repair costs and downtime. This buck-boost transformer stabilizes supply while maintaining compact dimensions suited to dense control cabinets. It carries UL Listed safety certification and a rugged NEMA 3R enclosure, enabling reliable operation in indoor-outdoor environments. The aluminum coil and 60 Hz single-phase design deliver dependable performance for typical factory loads, with a 0.05 kVA rating that matches light-duty automation tasks. For engineers and procurement teams, the combination of safety, compact footprint, and straightforward installation translates to lower total cost of ownership and faster time-to-value in automation projects.
Product Information
Extended Description
S10N04A81N Eaton: Eaton General purpose encapsulated transformer, buck-boost general-purpose encapsulated transformer, EP, aluminum, NEMA 3R, 52, 60 Hz, single-phase, 120 V, 240 V, 12/24 V, NONE, 115 °C rise, 0.05 KVA, indoor-outdoor, 3B
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S10N04A81N
UPC
786680383083
Product Length/Depth
4 in
Product Height
8.91 in
Product Width
4.11 in
Product Weight
8 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
Model N
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
52
Tap size
None
Type
Buck-Boost General-Purpose Encapsulated Transformer
Wiring connection
3B
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
120 V, 240 V
Secondary Voltage
12/24 V
Temperature rise
115 °C rise
Volt ampere rating
0.05 kVA
Weathershield
Indoor-Outdoor
Feature: Buck-boost general-purpose encapsulated transformer delivers controlled voltage adjustment from 120/240 V to 12/24 V at 0.05 kVA. Business impact: Stabilizes supply to sensitive automation devices, reducing relay chatter and sensor misreads, which cuts downtime and maintenance costs. Application: Ideal for control panels and machine builders that operate across fluctuating line voltages in manufacturing plants. Feature: NEMA 3R enclosure with indoor-outdoor rating. Business impact: Weather-resistant housing simplifies installation in harsh environments, reducing enclosure accessories and IP-related concerns. Application: Outdoor control stations and damp locations. Feature: Aluminum coil construction. Business impact: Lightweight, corrosion-resistant material extends service life and lowers thermal stress, improving reliability. Application: Industrial environments with humidity or corrosive air. Feature: 60 Hz, single-phase operation. Business impact: Compatible with most regional power systems and standard control equipment. Application: PLCs, relays, and small motors in panels. Feature: Wiring connection 3B. Business impact: Simplified field wiring and fewer tapping steps, easing installation in tight spaces. Application: Dense panel layouts and retrofit projects. Feature: 0.05 kVA rating with compact dimensions (4 in length, 4.11 in width, 8.91 in height) and 8 lb weight. Business impact: Small footprint supports dense cabinet designs while preserving capacity for essential devices. Application: OEM panel builders and compact automation installations. Feature: Warranty and certifications. Business impact: UL Listed safety and Eaton warranty provide regulatory compliance and lower lifecycle risk. Application: Quality-conscious facilities and mission-critical automation systems.
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FAQs
When installing the S10N04A81N, ensure mounting in a compact space with a clear 4 in by 4.11 in footprint and up to 8 in height clearance. Use the 3B wiring configuration for straightforward field connections, and accommodate the 120/240 V input with a 12/24 V output. Mounting should respect the NEMA 3R enclosure for indoor-outdoor reliability, and provide strain relief for power leads. Properly secure the transformer to prevent vibration and verify UL Listed compliance during commissioning.
The transformer operates at 60 Hz in a single-phase arrangement. It accepts a primary voltage of 120 V or 240 V and provides a secondary of 12 V or 24 V with a 0.05 kVA (50 VA) rating. This makes it suitable for light-duty automation tasks, PLC inputs, and relay coils in standard control panels, while delivering stable voltage under typical load conditions.
Yes. The unit features a rugged NEMA 3R enclosure and is designed for indoor-outdoor service. With an aluminum coil and weather-resistant construction, it withstands exposure to temperature variations and humidity commonly encountered in outdoor or damp industrial locations, reducing the need for additional enclosure accessories and simplifying outdoor installations.
The S10N04A81N is UL Listed, signaling compliance with recognized safety standards for electrical equipment. This certification supports regulatory approval, safer operation in industrial environments, and reduced risk for end-users. While CE or IP ratings are not listed in the data, the UL listing together with the NEMA 3R enclosure offers strong safety and environmental suitability for most control-panel applications.
The product is backed by Eaton’s warranty policy, including one year from installation or eighteen months from shipment, whichever occurs first. Regular maintenance is minimal due to a robust aluminum coil and sealed encapsulation. The compact form factor, UL-listed safety, and reliable buck-boost operation help reduce downtime, improve panel reliability, and lower total cost of ownership over the equipment lifecycle.