Eaton T48M11S99CUNV Transformer DS-3 - UL Listed
Part Number: T48M11S99CUNV
Quick Summary
This is the Eaton T48M11S99CUNV dry-type transformer designed for reliable control-panel power distribution. Engineers and procurement teams often struggle with heat buildup, space constraints, and downtime in enclosed installations. UL Listed ensures safety compliance in industrial cabinets, while the DS-3 dry-type design enhances cooling and maintenance access. The 100 kVA rating with copper windings supports high reliability, fast tap adjustments, and efficient operation in demanding automation systems. From a business perspective, this unit complements compact footprints, facilitates plug-and-play installation, and aligns with Eaton's warranty and service policies for a predictable total-cost-of-ownership.
Product Information
Extended Description
T48M11S99CUNV Eaton: General-Purpose Transformer, Ventilated, Dry Type Distribution, DS-3, Single-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 120/240V, 150°C, 100 kVA, Cu windings, Frame: 814N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T48M11S99CUNV
UPC
786685183930
Product Length/Depth
33.97 in
Product Height
62.91 in
Product Width
29.97 in
Product Weight
1800 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
Totally enclosed non-ventilated DS-3 or DT-3
Coil material
Copper
Design
DS-3
Frame
814N
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Dry Type Distribution Transformer
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Feature: 100 kVA dry-type transformer with copper windings. Business Impact: High-load capability for automation panels with improved thermal performance and durability, reducing the risk of overheating during peak demand. Application: Ideal for machine controls and distribution in harsh factory environments. Feature: Primary 480 V to Secondary 120/240 V configuration. Business Impact: Seamless integration with existing plant power architecture, enabling clean downstream voltages for controls and sensors, cutting wiring complexity and startup times. Application: Control panels, MCCs, and sub-panels in industrial plants. Feature: taps at +2.5% and -2.5% voltage adjustment. Business Impact: Precise voltage regulation to accommodate supply fluctuations and protect sensitive electronics, lowering fault rates and extending equipment life. Application: Site-wide voltage stabilization for critical automation equipment. Feature: Totally enclosed non-ventilated DS-3 frame (814N). Business Impact: Weather- and dust-resistant enclosure that minimizes maintenance and simplifies indoor/outdoor installation, reducing service intervals. Application: DS-3/DT-3 compliant installations in manufacturing floors and electrical rooms. Feature: 60 Hz single-phase design with 150 °C rise and UL Listed certification. Business Impact: Reliable operation in standard North American power systems, with recognized safety compliance that streamlines commissioning and compliance audits. Application: Control panels, power distribution blocks, and automation cabinets. Feature: Physical footprint and weight (33.97 in L x 29.97 in W x 62.91 in H; 1800 lb). Business Impact: Clear installation planning and crane-ready handling, ensuring predictable on-site logistics and mounting clearances. Application: Retrofit projects and new installations in space-constrained facilities.
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FAQs
Installers should plan for the DS-3 enclosure’s space and ventilation needs, noting the unit’s 1800 lb weight and footprint (33.97 in L x 29.97 in W x 62.91 in H). Ensure adequate clearance for heat dissipation, periodic maintenance access, and routing of primary 480 V supply to the transformer with correct fusing. A compatible mounting surface and crane-access may be required for relocation.
The transformer provides a 480 V primary and a 120/240 V secondary. Tap changes are available with 2 taps at +2.5% FCAN and 4 taps at -2.5% FCBN to compensate for supply fluctuations. It is designed for 60 Hz single-phase operation, enabling stable control-panel power in fluctuating electrical environments.
Yes. With a 100 kVA rating, copper windings, and DS-3 frame, it supports high-demand control circuits and automation equipment. Its enclosure design minimizes maintenance in dusty or humid spaces, while the 480 V to 120/240 V conversion aligns with common control electronics. This makes it a solid choice for industrial cabinets and automation panels.
The unit is UL Listed, confirming compliance with recognized safety standards for industrial equipment. Warranty terms follow Eaton’s policy: one year from installation date or eighteen months from shipment, whichever occurs first. This provides predictable support for commissioning, uptime, and long-term service planning.
The transformer’s dimensions (33.97 in L x 29.97 in W x 62.91 in H) and 1800 lb weight require suitable mounting space and possibly a crane or lift for installation or relocation. Its DS-3/DT-3 catalog notes indicate dry-type, non-ventilated construction. Ensure compliant mounting, room for ventilation clearance, and easy access for taps and wiring.