Toshiba’s General Purpose Weather-Protected Type II (WPII) high-efficiency motor series has increased water and dust protection compared to other open frames. Offering a cost-effective balance of protection and price for outdoor and indoor applications. It features high torque, low vibration design, and robust construction for industries such as oil and gas, mining, and wastewater treatment. These motors are built to withstand challenging conditions and feature advanced components for extended operational life and exceptional dependability. Toshiba’s in-house design, engineering, and manufacturing capabilities allow for customization, resulting in a product line that minimizes maintenance and downtime.
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Overview
Air Housing Configuration
Designed with three right-angled turns in the air inlets and outlets, this feature directs water, dust, and debris away—protecting internal electrical components and enhancing long-term reliability.
Ducting and Air Filters
Meets industry standards for air flow direction, stainless steel air filters are available for additional protection.
Fan Design
3-D fluid analysis is used to model airflow and optimize fan design, providing maximum airflow with reduced frictional losses.
Frame Construction
Finite element analysis is utilized to determine optimal rigidity. The design reduces vibration by maintaining stator-to-frame concentricity.
Customizable
Built to meet application requirements, backed by U.S.-based application engineering and support for a precise fit and reliable performance.
Thermal Protection
Embedded 100 Ω platinum stator RTDs, two per phase terminated in an auxiliary box, help protect the motor’s insulation system from excessive heat and unsafe operation.
Humidity Protection
120V space heater is included in all frames.
Vibration Provisions
Designed for mounting vibration sensors (1/4” NPT) on each bearing bracket.
Drive Duty Compatibility
The insulation meets NEMA MG1 Part 31 standards. It can be paired with a UL-Listed Medium Voltage Drive, which features a motor-friendly multiphase neutral point clamped output.
Rotor Options:
Aluminum Rotor
High-pressure diecast aluminum rotors offer a lightweight, cost-effective solution. Low rotor inertia improves acceleration and deceleration, while excellent thermal conductivity enhances cooling. Corrosion-resistant properties increase reliability in harsh environments.
Copper Bar Rotor
Copper bar rotors deliver high electrical conductivity for improved efficiency and reduced losses. They provide higher starting torque and operate at lower temperatures, making them ideal for heavy-duty, high-performance applications where thermal stability and energy efficiency are critical.

Insulated Bearings

Extended Horsepower Capability

Insulation with Wide Thermal Capability

Low Vibration
Specifications
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