Authorized Techtop Motors Distributor
Techtop Motors SD3-444T-4-RR-E-125 - TechTop SD3-444T-4-RR-E-125 — 125 HP Severe Duty IEEE 841 motor, 444T frame, 4 POLE (1800), 460V 60HZ, TEFC, IE3 - NEMA Premium
Techtop Motors

SD3-444T-4-RR-E-125

Documents & Media
3D CAD Model (STEP)Specification SheetManufacturer Product Website

Contact for Pricing

Overview

The TechTop SD3-444T-4-RR-E-125 is a severe-duty 125 HP, 444T frame, 4-pole (1800 RPM) three-phase induction motor designed for industrial applications requiring high efficiency and reliability. Rated at 460V, 60Hz, this Totally Enclosed Fan-Cooled (TEFC) motor delivers 1785 RPM at full load with a rated current of 138 Amps and a service factor of 1.15. Certified to NEMA Premium IE3 efficiency standards (95.4% nominal efficiency), it meets DOE and UL/CSA requirements for energy compliance and safety. Key mechanical features include IP56 ingress protection, Class F insulation with tropicalization, and a 72.5°C temperature rise at full load. The motor is equipped with 6319 C3 bearings on both drive-end (DE) and non-drive-end (NDE) sides, providing robust support for heavy-duty operation. Shaft grounding is standard to mitigate bearing currents, and the motor is coated with 7024 graphite grey for corrosion resistance. Cable entry is 1.25 inches with removable feet for flexible installation. Designed for continuous duty (Cont.) in harsh environments up to 1000 meters altitude, the SD3-444T-4-RR-E-125 is ideal for pumps, compressors, fans, and material handling systems in chemical, oil & gas, mining, and manufacturing sectors. Its NEMA Design B performance profile ensures reliable starting torque across a wide range of loads, while the 125% overload capability provides resilience against transient conditions. The motor’s breakdown torque (185% of full load) and pull-up torque (89% of full load) deliver consistent performance under variable loads. UL/CSA certified with file numbers 323353, 224693, and 096A, this motor is built to meet Class I Division 2 hazardous location requirements. The SD3 series is engineered for severe-duty applications where durability, efficiency, and compliance are non-negotiable. Backed by Techtop Industries’ 28+ years of motor design expertise, this motor combines field-proven reliability with energy-efficient operation to reduce operational costs over its lifecycle.
  • 125 HP, 444T frame, 4-pole (1800 RPM) severe-duty motor
  • 460V, 60Hz, 3-phase, TEFC enclosure with IP56 rating
  • NEMA Premium IE3 efficiency (95.4% nominal) with DOE compliance
  • Service factor 1.15, 125% overload capability, Class F insulation
  • UL/CSA certified, Class I Div2 hazardous location rated, tropicalized

Frequently Asked Questions about Techtop Motors

What certifications and standards do Techtop Motors products comply with?

Techtop Motors products comply with NEMA Premium® efficiency standards, IEEE 841 for severe duty applications, and MG1 Part 31 for safe VFD use. Additionally, they feature IP55 ingress protection and are constructed with corrosion-resistant materials, ensuring durability and reliability in industrial environments.

What is Techtop Motors's warranty policy?

Techtop Motors offers a 36-month warranty from the date of purchase on their electric motors, ensuring protection against defects in materials and workmanship. This warranty reflects Techtop's commitment to quality and customer satisfaction.

What industries and applications are Techtop Motors products used for?

Techtop Motors products are utilized across a wide range of industries, including manufacturing, processing, agriculture, HVAC, and heavy-duty applications. Their motors are designed for powering machinery such as pumps, fans, conveyors, and compressors, ensuring reliable performance and energy efficiency in demanding environments.

What technical support does Techtop Motors offer?

Techtop Motors offers comprehensive technical support, including pre-sale and post-sale assistance through a fully trained customer service team. Our support extends to application-driven engineering, ensuring that customers receive expert guidance tailored to their specific needs. Additionally, we provide access to live inventory, electrical and dimensional data, and downloadable brochures via our website.

What are the main product lines offered by Techtop Motors?

Techtop Motors offers a diverse range of industrial electric motors, including NEMA Premium Efficiency motors, IEEE 841 Severe Duty motors, JM/JP Pump motors, and Explosion Proof motors. Their product lines also feature options in both cast iron and aluminum constructions, as well as specialized motors for applications like cooling towers and washdown environments. With horsepower ratings ranging from 1/8 to 500 HP and various frame sizes, Techtop Motors is equipped to meet a wide array of industrial automation needs.

What are the key features of Techtop Motors products?

Techtop Motors products feature NEMA PREMIUM® operating efficiency, ensuring reduced energy costs and enhanced performance. They are designed with hand-inserted lap wound stators for smooth operation, true copper windings for reduced loss, and full cast iron construction for durability. Additional features include IP55 ingress protection, automatic moisture drainage, and a 36-month warranty, making them ideal for demanding industrial applications.

What communication protocols do Techtop Motors products support?

Techtop Motors products support a comprehensive range of communication protocols including PROFIBUS DP V1, PROFINET with dual port, EtherNet/IP with dual port, CANopen, and Modbus RTU integrated as standard. These protocols facilitate efficient communication and integration within industrial automation systems, enhancing system performance and diagnostics.

What environmental ratings do Techtop Motors products have?

Techtop Motors products feature environmental ratings such as IP55 and IP56, providing robust protection against dust and water ingress. These ratings ensure reliable performance in various industrial environments, with options for oil seals and labyrinth seals for enhanced durability.

What accessories are available for Techtop Motors products?

Techtop Motors offers a variety of accessories for their products, including C & D flanges for versatile mounting options, aluminum and rolled steel C-face conversion kits, and multi-mount removable mounting feet for easy installation. Additionally, their motors feature color-coded oversized lead wires for simplified connections and automatic grease purge systems to prevent over-greasing, enhancing maintenance efficiency.

How are Techtop Motors products typically installed?

Techtop Motors products are designed for straightforward installation, featuring multi-mount removable mounting feet that allow for easy repositioning of the conduit box. Their lightweight designs facilitate handling in difficult-to-reach locations, while color-coded oversized lead wires simplify electrical connections. Additionally, the motors are equipped with features such as automatic grease purge and double lip shaft seals, ensuring reliable operation and maintenance ease.