WEG ESW-B50D39A-R71 - ENCLOSED STARTER ESW-B50D39A-R71
WEG

ESW-B50D39A-R71

UPC: 7909836489399

Contact for Pricing

Overview

The WEG ENCLOSED STARTER ESW-B50D39A-R71 represents a robust and integrated solution for industrial motor control, offering a comprehensive package designed for safety, reliability, and ease of installation. This unit effectively combines essential motor protection and switching functionalities within a durable, protective enclosure, making it an indispensable component for a wide array of industrial applications. By housing both a WEG contactor and an overload relay, the ESW-B50D39A-R71 provides a complete system for starting, stopping, and safeguarding electric motors against damaging overload conditions. Industrial environments demand equipment that can withstand rigorous operating conditions and ensure the continuous, safe operation of machinery. The enclosed nature of this starter is paramount, offering superior protection against environmental factors such as dust, moisture, and physical impact, depending on the specific enclosure rating. This not only enhances the longevity of the internal components but also significantly improves operational safety by preventing accidental contact with live electrical parts. The integration of a contactor and overload relay simplifies wiring and reduces the overall footprint compared to separate component installations, leading to more efficient panel designs and quicker assembly times. WEG is a globally recognized leader in the manufacturing of electric motors, drives, and control equipment, renowned for its commitment to quality, innovation, and performance. Their motor starters, including models like the ESW-B50D39A-R71, are engineered to meet stringent industry standards and deliver dependable operation. Professionals select WEG starters for their proven track record, robust construction, and the assurance of reliable motor protection. The overload relay component is crucial for preventing motor burnout due to excessive current draw, which can be caused by mechanical overloads, voltage sags, or phase imbalances. Properly set overload protection is a key factor in extending motor life and minimizing costly downtime. The ESW-B50D39A-R71 is ideal for applications such as: * Pumps and fans in HVAC systems * Conveyor belts in manufacturing and logistics * Compressors in industrial plants * Machine tools and processing equipment * General purpose motor control in harsh environments When specifying an enclosed motor starter, factors such as the motor's full-load current, voltage, and the environmental conditions of the installation site are critical. The WEG ESW-B50D39A-R71 is designed to integrate seamlessly into existing electrical control panels and systems, providing a reliable and efficient solution for motor management. Its comprehensive protection features, combined with the trusted WEG brand, make it a preferred choice for engineers and maintenance professionals seeking dependable and safe motor control solutions.
  • Integrated WEG contactor and overload relay for complete motor control.
  • Durable, protective enclosure for enhanced safety and environmental resistance.
  • Provides reliable starting, stopping, and overload protection for electric motors.
  • Simplifies installation and reduces panel space requirements.
  • Trusted WEG quality for demanding industrial applications.

Specifications

Package Weight (Imperial)
11.44 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-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 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.