Eaton T48M11S25CUNV Transformer - Non-Ventilated
Part Number: T48M11S25CUNV
Quick Summary
The Eaton T48M11S25CUNV Transformer delivers reliable power distribution for industrial control panels and DS-3 distribution setups. Many facilities struggle with limited space, heat buildup, and downtime when sourcing capable power transformers for panelboards and control circuits. Certifications vary by region and project requirements; consult Eaton for the exact CE, UL, and IEC approvals applicable to this DS-3 dry-type transformer. This model is designed to support DS-3 configurations with robust performance and easy integration, while offering a compact footprint and durable copper-windings construction. By choosing this transformer, users gain predictable voltage stability, streamlined maintenance, and improved uptime across mission-critical applications.
Product Information
Extended Description
T48M11S25CUNV 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, 25 kVA, Cu windings, Frame: 818N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T48M11S25CUNV
UPC
786680055546
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
406 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
Contact Manufacturer
Catalog Notes
Totally enclosed non-ventilated DS-3 or DT-3
Coil material
Copper
Design
DS-3
Frame
818N
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: Copper windings provide high electrical conductivity and low losses → Business impact: improves overall efficiency and reduces heat generation under full-load conditions → Application: 25 kVA, single-phase distribution in motor control centers and switchgear enclosures. Feature: Dry-type, totally enclosed non-ventilated DS-3 design → Business impact: safe indoor use with minimal cooling requirements and lower maintenance compared to liquid-filled units → Application: indoor industrial installations and controlled environments where ventilation is limited. Feature: Primary voltage 480 V and secondary 120/240 V with 60 Hz operation → Business impact: direct compatibility with common plant power buses and control circuits → Application: electrical distribution in manufacturing lines, assembly benches, and low-voltage control panels. Feature: Tap changers with 2 at +2.5% FCAN and 4 at -2.5% FCBN → Business impact: voltage setpoints accommodate small supply fluctuations, reducing device nuisance tripping → Application: sites with voltage variation or unstable feeders. Feature: Frame 818N and 406 lb weight with 20.36 in L, 22.89 in W, 37.59 in H → Business impact: compact footprint fits tight equipment spaces and simplifies mounting in existing racks or enclosures → Application: retrofits and new builds where space is at a premium. Feature: Copper wound, 25 kVA rating and DS-3/DT-3 catalog notes → Business impact: reliable, durable power conversion with broad compatibility for distribution transformers in control panels → Application: general-purpose distribution transformer needs in industrial automation and building services. Feature: Warranty and service terms from Eaton’s policy framework → Business impact: clear post-sale support and predictable maintenance planning → Application: procurement and maintenance budgeting for uptime-critical infrastructure.
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FAQs
The T48M11S25CUNV uses a 480 V primary winding with a dual secondary of 120/240 V, designed to support standard control panels and distribution boards. This single-phase arrangement suits typical industrial automation and facility power layouts, enabling straightforward connections and voltage regulation within the DS-3 footprint.
The transformer offers taps: 2 at +2.5% FCAN and 4 at -2.5% FCBN. These taps allow minor adjustments to compensate for line voltage fluctuations, helping protect connected equipment from over- or under-voltage conditions and reducing nuisance trips in sensitive automation or control circuits.
Yes. It is a dry-type distribution transformer designed for DS-3 applications and is specified as a totally enclosed non-ventilated unit suitable for indoor installations. The copper windings and enclosure design contribute to reliable performance, reduced maintenance, and safer operation in controlled spaces like machine rooms and electrical208 enclosures.
With a compact footprint (20.36 in L × 22.89 in W × 37.59 in H) and a 406 lb weight, plan mounting clearances accordingly and ensure adequate access for servicing. The frame 818N and copper windings support sturdy mounting and efficient heat dissipation in typical control cabinet environments, streamlining installation and service.
Eaton provides a standard warranty framework (one year from installation or 18 months from shipment, per policy 25-000) and offers customer-specific certification documentation and product support. For exact coverage and regional compliance details, contact Eaton’s technical support or your authorized distributor.