WEG MPW18-3-U004 - MOTOR PROTECTOR BU MPW18-3-U004
WEG

MPW18-3-U004

Alternate Item Number: 12429370

UPC: 7909158002627

Contact for Pricing

Overview

The WEG MPW18-3-U004 (SKU: MPW18-3-U004) is a manual motor protector engineered for 3-phase motors with rated currents between 12-18A, ensuring precise overload and short-circuit protection in compact motor control panels. This UL Type-E self-protected combination starter meets NEC Article 430 requirements for motor disconnect applications, including group motor installations, providing compliance with industry safety standards. The protector features a magnetic release current of 208A and a maximum short-circuit rating of 50kA at 480V, delivering robust protection against electrical faults. Designed for DC applications, it includes phase loss sensitivity protection to prevent motor damage from unbalanced power conditions. With screw terminal connections and DIN rail mounting, the MPW18-3-U004 is optimized for space-efficient industrial environments where reliability is critical. It is compatible with multiple motor frame sizes, including CWC07...025, CWM9...18, and CWB9...18, supporting motor loads up to 10 HP at 460V. The device is distributed by Gross Automation and holds UL File No. E172121, ensuring adherence to rigorous safety certifications. Its compact design and robust performance make it an ideal solution for industrial motor protection applications.
  • Rated for 3-phase motors with 12-18A current range
  • 50kA short-circuit rating at 480V, 208A magnetic release current
  • UL Type-E self-protected combination starter compliant
  • Suitable for NEC Article 430 group motor installations
  • DIN rail mounting with screw terminal connections

Specifications

Connection Type
Screw Terminal
Current Rating
12-18 A
Material
Composite
Mounting Type
Panel Mount
Poles
3
Series
MPW18
Voltage Rating
460 VAC
Package Weight (Imperial)
0.627 LB
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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-40

BFB-40

CONTACT BLOCK BU BFB-40
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 magnetic release current for MPW18-3-U004?

The magnetic release current for the WEG MPW18-3-U004 is 208A.

What is the short-circuit rating at 480V?

The maximum short-circuit rating at 480V is 50kA.

Is the MPW18-3-U004 suitable for DC applications?

Yes, the WEG MPW18-3-U004 is rated for DC applications.

What is the overload trip class for this protector?

The overload trip class is 10.

Does this protector support group motor installations?

Yes, it supports group motor installations per NEC Article 430.

What is the rated thermal current Ith?

The rated thermal current Ith is 18A.

What standards does the MPW18-3-U004 meet?

It meets IEC 60947-1/60947-4-1, UL 508, CSA C.22.2/14, and VDE 0660/102.

What is the maximum motor load at 460V?

The maximum motor load at 460V is 10 HP.

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.