WEG Strategic Partner Distributor
WEG MPW40-3-U032 - MOTOR PROTECTOR BU MPW40-3-U032

WEG MPW40-3-U032 MOTOR PROTECTOR BU MPW40-3-U032

Alternate Item Number: 12428131

UPC: 7909158000364


Documents & Media
Specification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The WEG MPW40-3-U032 is a manual motor protector from the MPW Series, designed for overload and short-circuit protection of industrial motors. This UL Type-E self-protected unit supports thermal settings from 32A to 40A and delivers a high short-circuit interrupting rating of 65kA at 480V. It meets NEC requirements for motor disconnect, branch circuit protection, and overload protection, including phase loss sensitivity. Its compact design integrates with WEG CWC07-025, CWM9-40, and CWB9-40 contactors for space-efficient installations. SKU: MPW40-3-U032.
  • Thermal setting range: 32-40A
  • Short-circuit interrupt rating: 65kA @ 480V
  • UL Type-E self-protected for motor disconnect and overload protection
  • Compact design compatible with WEG CWC07-025, CWM9-40, and CWB9-40 contactors

Specifications

Color
Blue
Connection Type
Screw Terminal
Current Rating
32 A
Current Rating
32-40 A
Frequency
50/60 Hz
Material
Poly
Mounting Type
Panel Mount
Poles
3P
Series
MPW
Series
MPW40
Series
MPW40-3
Voltage Rating
480 VAC
Package Weight (Imperial)
0.792 LB
GMD-16M DC240V 3W 1b EXP (GMD16M-30-01-UD-3W-S-E)

1270040900

GMD-16M DC240V 3W 1b EXP (GMD16M-30-01-UD-3W-S-E)
MT-63 34A 3D SCREW EXP (MT63-3D-34-S-E)

1311001000

MT-63 34A 3D SCREW EXP (MT63-3D-34-S-E)
Ground Lug

DNGL

Ground Lug
CONTACT BLOCK BU BLB-02

BLB-02

CONTACT BLOCK BU BLB-02
CONTACT BLOCK BU BFB-20

BFB-20

CONTACT BLOCK BU BFB-20
One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

LCMA6-8-C

One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

Frequently Asked Questions

What is the adjustable thermal setting range for the WEG MPW40-3-U032?

The WEG MPW40-3-U032 has an adjustable thermal setting range of 32-40A.

What is the short-circuit interrupting rating of the MPW40-3-U032 at 480V?

The WEG MPW40-3-U032 has a short-circuit interrupting rating of 65kA at 480V.

Is the WEG MPW40-3-U032 UL Type-E self-protected?

Yes, the WEG MPW40-3-U032 is a UL Type-E self-protected combination starter.

Does the MPW40-3-U032 offer phase loss sensitivity protection?

Yes, the WEG MPW40-3-U032 includes phase loss sensitivity protection.

What NEC articles does the MPW40-3-U032 comply with for motor installations?

The WEG MPW40-3-U032 meets NEC requirements for motor disconnect, branch circuit protection, controller, and overload protection, and is suitable for group motor installations per NEC Article 430.

What is the maximum HP rating for a single-phase motor at 230V for this protector?

The WEG MPW40-3-U032 supports single-phase motors up to 7.5 HP at 230V.

What is the maximum HP rating for a three-phase motor at 460V for this protector?

The WEG MPW40-3-U032 supports three-phase motors up to 25 HP at 460V.

What WEG contactors can the MPW40-3-U032 integrate with?

The MPW40-3-U032 can integrate with WEG CWC07-025, CWM9-40, and CWB9-40 contactors.

Frequently Asked Questions about WEG

What certifications and standards do WEG products comply with?

WEG products meet extensive international standards across multiple critical categories, including safety, electromagnetic compatibility (EMC), functional safety, and regulatory compliance. Key certifications include UL, cUL, CE, TÜV Rheinland, and compliance with international standards such as EN 61800 series, IEC 61508, ISO 13849-1, and directives like Low Voltage (2014/35/EU), EMC (2014/30/EU), and RoHS. Their products are certified for safe operation in various industrial environments, with specific standards covering electrical safety, thermal performance, electromagnetic immunity, and environmental protection.

What is WEG's warranty policy?

WEG offers an 18-month standard warranty for automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Repairs must be performed by authorized WEG service, and the warranty is limited to the replacement or repair of the product itself, excluding consequential damages. Extended warranty options are available, including purchasing additional coverage at 2.5% of the product's selling price per year, up to 4 additional years.

What industries and applications are WEG products used for?

WEG products are extensively used across multiple industrial sectors, including packaging equipment, material handling, food processing, pumps, medical/lab equipment, door/gate openers, office machinery, and lawn/garden applications. Their versatile DC motors and variable frequency drives (VFDs) are designed for general industrial use, with solutions ranging from off-the-shelf products to custom OEM designs that meet UL/CSA standards for diverse manufacturing and processing environments.

What technical support does WEG offer?

WEG offers comprehensive technical support through multiple channels, including a dedicated Automation Service Department accessible via toll-free phone (1-877-934-3748) and email ([email protected]). They maintain a global network of accredited service centers worldwide, which customers can locate on their website. Additionally, WEG provides warranty support and technical assistance for their industrial automation products, with pre-approval required for warranty repairs.

What are the key features of WEG products?

WEG products feature advanced industrial automation technologies with key characteristics including high performance, flexibility, and connectivity. Their flagship CFW900 Variable Speed Drive demonstrates core product strengths: intelligent thermal management, built-in safety functions, IoT readiness, advanced energy saving capabilities, and comprehensive communication protocols. WEG drives offer robust performance with features like 150% overload capacity, modern graphic HMI, plug-and-play expansion modules, and compatibility across multiple industrial segments including food and beverage, pulp and paper, and manufacturing.

What communication protocols do WEG products support?

WEG products support multiple industrial communication protocols across their product lines, including EtherNet/IP, Modbus-TCP, Modbus-RTU, CANopen, and optional protocols like Profibus-DP and DeviceNet. Specifically, the PLC500 offers 2x Gigabit Ethernet Ports, 1x CAN Port, and 1x RS485 port, enabling seamless integration with major industrial communication networks.

What environmental ratings do WEG products have?

WEG products feature multiple environmental ratings and protection classes. They offer Protection Class 3C2 as a standard coating and Protection Class 3C3 as an optional extra coating, both compliant with IEC 60721-3-3. Environmental specifications include air relative humidity from 5% to 95% non-condensing, altitude ratings up to 1,000m standard (with current derating above that), and Pollution Degree 2 classification with non-conductive pollution requirements.

What accessories are available for WEG products?

WEG offers a comprehensive range of accessories across multiple product lines. For variable frequency drives like the CFW900, accessories include I/O expansion modules, communication modules, encoder modules, temperature transducer modules, relay output modules, and HMI accessories. These accessories expand communication capabilities, input/output functions, and application flexibility. Most accessories are interchangeable between drive frames and can be installed in backplane slots, with communication network accessories limited to one per variable speed drive.

What are the main product lines offered by WEG?

WEG offers a comprehensive range of industrial automation products, including variable frequency drives (CFW series like CFW100, CFW300, CFW500), soft starters (SSW series including SSW05, SSW07, SSW900), and the innovative Motion Fleet Management (MFM) system for predictive maintenance and asset monitoring. Their product lines are designed to support industrial automation needs across various sectors, providing solutions for motor control, fleet management, and operational efficiency.

How are WEG products typically installed?

WEG products are typically installed with careful attention to mounting specifications, protection ratings, and airflow requirements. For variable speed drives like the CFW900, installation methods include surface mounting, flange mounting, and side-by-side configurations with specific clearance guidelines. Installers must follow precise dimensional requirements for each product frame size, ensuring proper ventilation and electrical connections.