Eaton N48M31T33 Transformer - UL Listed K-Factor
Part Number: N48M31T33
Quick Summary
The Eaton N48M31T33 transformer delivers robust three-phase power for industrial distribution. Operators often contend with heat, voltage transients, and installation complexity that can impact uptime; this unit is engineered to help mitigate those challenges. UL Listed certification confirms safety compliance and reliable operation, while its 150 °C rise capability and electrostatic shield enhance performance in demanding environments. With aluminum windings, a sturdy 919E frame, and 45 kVA of capacity, it supports scalable power delivery. For manufacturers and data centers seeking dependable power distribution transformers, the N48M31T33 offers a clear path to improved efficiency, easier maintenance, and faster project commissioning.
Product Information
Extended Description
N48M31T33 Eaton: K-Factor nonlinear ventilated transformer K-13, Three-phase, PV: 480V, Taps: 2 at 0.025 FCAN, 4 at -0.025 FCBN, SV: 220Y/127V, 150°C, 45 kVA, Al windings, Elec. Shield, Frame: 919E
Product Name
Eaton K-Factor nonlinear ventilated transformer
Catalog Number
N48M31T33
UPC
786680068003
Product Length/Depth
36.23 in
Product Height
75 in
Product Width
44.2 in
Product Weight
2657 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
Type
Ventilated transformer
Design
K-13
Frame
919E
Tap size
2 at +2.5% FCAN, 4 at -2.5% FCBN
Frequency rating
60 Hz
Kva Rating
45 kVA
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
220Y/127 V
Temperature rise
150 °C rise
Special features
Electrostatically Shielded
Weathershield
WS35
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton's Transformer Flex Center
Eaton Specification Sheet - N48M31T33
Feature → Business Impact → Application: K-Factor nonlinear ventilated design (K-13) improves harmonic handling and heat dissipation, reducing thermal aging and improving long-term reliability in high-demand loads. This translates to fewer unplanned outages and lower maintenance costs in continuous process environments and data centers, where consistent voltage quality is critical. Feature → Aluminum windings and electrostatic shield provide lightweight yet durable construction with enhanced EMI suppression, supporting safer enclosure installations and simpler compliance audits in industrial plants. Application: suitable for modern electrical rooms and switchgear assemblies requiring robust transient tolerance and compact footprints. Feature → Primary 480 V and secondary 220Y/127 V configuration with 60 Hz operation delivers ready-made power conversion for typical manufacturing lines and control panels, allowing straightforward integration with existing infrastructure and minimal phase balancing concerns. Application: ideal for machine control rooms and panel boards in factories. Feature → Tap settings (2 at +2.5% FCAN, 4 at -2.5% FCBN) offer precise voltage regulation under varying load, improving process stability and reducing equipment stress. Application: critical loads where voltage sag or surge could affect product quality. Feature → Frame 919E, dimensions (36.23 in L, 75 in H, 44.2 in W) and weight (2657 lb) enable clear space planning and robust mounting, with installation considerations that support hoist or rack integration in large facilities. Application: utility rooms, electrical substations, and outdoor installations using WS35 weather shield compatibility for added protection.
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FAQs
Install per Eaton installation guidelines for a 45 kVA, three-phase unit with 480 V primary and 220Y/127 V secondary. Ensure the WS35 Weathershield is considered for enclosure protection, mount on a solid base, and use proper hoisting and clearance to accommodate the 2657 lb weight and 36.23 in length requirement. Verify taps at +2.5% FCAN and −2.5% FCBN during commissioning.
The transformer is rated 45 kVA, three-phase, with a 480 V primary and 220Y/127 V secondary, operating at 60 Hz. It features aluminum windings, an electrostatic shield, frame 919E, and temperature rise of 150 °C. Tap settings include 2 at +2.5% FCAN and 4 at −2.5% FCBN, supporting voltage regulation under varying load.
Yes, it is designed with robustness in mind and includes a WS35 weather shield option. The unit’s 150 °C rise capability and electrostatic shield enhance reliability in harsh environments, while UL Listed certification confirms compliance with safety standards for electrical equipment.
Dimensions are 36.23 in (length) × 75 in (height) × 44.2 in (width). The unit weighs 2657 lb, requiring appropriate lifting and rigging. Plan for adequate ventilation and access around the enclosure, and consider frame 919E compatibility for mounting in standard electrical rooms or switchgear spaces.
Warranty is Eaton’s standard policy: 1 year from installation or 18 months from shipment, whichever occurs first. For ongoing performance and maintenance, rely on Eaton’s technical support and the provided specification sheet (N48M31T33) for detailed guidance on installation, testing, and compliance.