Eaton T48M11S30NV Transformer - DS-3 30 kVA
Part Number: T48M11S30NV
Quick Summary
The Eaton T48M11S30NV transformer is a dry-type, single‑phase distribution transformer designed for reliable power conditioning in industrial facilities. In busy plants, space constraints and ventilation maintenance can disrupt uptime, but this totally enclosed non‑ventilated DS‑3 unit minimizes those interruptions. Certifications for this model are to be confirmed with the manufacturer; however, common standards in this class include CE, UL, and CSA, ensuring regulatory alignment across many regions. With a 30 kVA rating and 480 V primary feeding 120/240 V secondary, it delivers stable voltage to control panels, MCCs, and lighting circuits. Choosing Eaton supports predictable performance, lower total cost of ownership, and easier maintenance for engineers, procurement teams, and service personnel.
Product Information
Extended Description
T48M11S30NV 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, 30 kVA, Al windings, Frame: 818N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T48M11S30NV
UPC
786680052156
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
375 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
Aluminum
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
Kva Rating
30 kVA
Phase
Single-phase
Primary voltage
480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Totally enclosed non-ventilated DS-3 enclosure — Protects windings and reduces maintenance; ideal for indoor electrical rooms and cramped spaces. Aluminum windings provide durable, cost-effective conduction with robust thermal performance, improving efficiency and reducing cooling needs in continuous operation. Tap size options 2 at +2.5% FCAN and 4 at -2.5% FCBN enable precise voltage regulation under load, minimizing downstream equipment stress and supporting reliable PLC and drive performance. Primary 480 V to secondary 120/240 V configuration aligns with common plant distribution and control systems, simplifying panel design and replacement strategies. The 30 kVA rating with DS-3 frame 818N offers a compact footprint for mid-range power distribution, balanced by 60 Hz operation and a 150 °C rise for safe, dependable operation. Warranty and service include a one-year warranty from installation or eighteen months from shipment, helping protect commissioning and early operation costs.
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FAQs
Plan for indoor installation with adequate clearance around the unit, noting its footprint of 20.36 in (length) by 37.59 in (height) by 22.89 in (width) and a weight of 375 lb. Ensure a rigid, level mounting surface and access to 480 V primary and 120/240 V secondary connections. Allow space for tapping adjustments and routine maintenance checks in the surrounding electrical room.
The transformer provides two taps at +2.5% FCAN and four taps at -2.5% FCBN, enabling fine voltage regulation under varying load and supply conditions. This reduces voltage stress on downstream motors and drives, improves control accuracy for PLCs, and helps maintain consistent performance in machine panels and switchgear.
Yes. With a 30 kVA rating and a DS-3 enclosure, the T48M11S30NV is well-suited for installation in MCCs and nearby switchgear. Its dry-type insulation and compact 818N frame design facilitate indoor deployments, while the 480 V to 120/240 V distribution supports common control circuit needs. Verify enclosure space and clearance per site requirements.
Check with Eaton for current listings; the catalog notes ‘Contact Manufacturer’ for formal certifications. In practice, request CE, UL, CSA, and any region-specific environmental or IP ratings your facility requires. Ensure the unit meets your local electrical codes and installation standards before purchase.
Maintenance needs are typically low due to the dry-type, totally enclosed design. The unit carries Eaton’s warranty of one year from installation or eighteen months from shipment, whichever occurs first. Regular inspections of terminations, winding health, and temperature rise help maximize uptime and protect downstream equipment.