WEG CWB38-11-30D77 - CONTACTOR CWB38-11-30D77
WEG

CWB38-11-30D77

Alternate Item Number: 12961442

UPC: 7894171458493

Contact for Pricing

Overview

The **WEG CWB38-11-30D77 contactor** is a high-performance, electrically-controlled switch engineered for demanding industrial control applications. Designed by WEG, a global leader in electrical engineering solutions, this contactor excels in frequent switching of motor and power circuits, making it an essential component in motor starters, lighting controls, and automated machinery. With a robust electromagnetic coil mechanism, the CWB38-11-30D77 ensures reliable operation by closing and opening power contacts with precision, even under harsh industrial conditions. **Key Features and Technical Advantages:** - **Electromagnetic Operation:** The contactor utilizes a powerful electromagnetic coil to actuate the power contacts, enabling remote control of motors and other electrical loads. This design minimizes manual intervention and enhances operational safety. - **High Durability:** Built to withstand millions of switching operations, the CWB38-11-30D77 is ideal for applications requiring frequent cycling, such as conveyor systems, pumps, and HVAC units. Its rugged construction ensures long-term reliability in industrial environments. - **Arc Suppression Technology:** Integrated arc suppression mechanisms protect the contacts from excessive wear and tear, extending the product’s lifespan and reducing maintenance costs. This feature is critical in applications involving inductive loads, such as motors and transformers. - **Auxiliary Contacts for Control Circuits:** The contactor includes auxiliary contacts that facilitate control circuit functionality, allowing for seamless integration into complex automation systems. These contacts are essential for interlocking, signaling, and other control logic applications. - **Compact and Modular Design:** The CWB38-11-30D77 features a space-efficient design, making it easier to install in control panels with limited space. Its modular construction also simplifies maintenance and upgrades. **Industry Applications:** The WEG CWB38-11-30D77 contactor is widely used across multiple industries, including manufacturing, mining, oil and gas, water treatment, and renewable energy. Typical applications include: - **Motor Starters:** Ideal for starting and stopping electric motors in pumps, fans, compressors, and machine tools. - **Lighting Controls:** Suitable for managing large-scale lighting systems in warehouses, stadiums, and commercial buildings. - **Automated Machinery:** Used in CNC machines, robotic systems, and assembly lines to control power distribution and ensure operational safety. - **HVAC Systems:** Essential for controlling heating, ventilation, and air conditioning systems in industrial and commercial facilities. - **Power Distribution:** Deployed in switchgear and distribution panels to manage power flow and protect electrical circuits. **Why Choose WEG Contactors?** WEG is a trusted name in electrical engineering, renowned for its innovation, quality, and reliability. The CWB38-11-30D77 contactor exemplifies this reputation, offering: - **Global Support and Service:** With a presence in over 100 countries, WEG provides comprehensive technical support, training, and after-sales service to ensure seamless integration and operation. - **Compliance with International Standards:** The contactor meets stringent industry standards, including IEC, UL, and CSA, ensuring compatibility and safety in global markets. - **Energy Efficiency:** WEG’s designs prioritize energy efficiency, reducing operational costs and environmental impact. - **Customization Options:** WEG offers a range of accessories and configurations to tailor the contactor to specific application requirements, including different coil voltages, auxiliary contacts, and mounting options. **Installation and Maintenance Considerations:** Proper installation and maintenance are critical to maximizing the performance and lifespan of the CWB38-11-30D77 contactor. Professionals should: - Ensure the contactor is installed in a clean, dry environment with adequate ventilation to prevent overheating. - Verify that the electromagnetic coil voltage matches the control circuit voltage to avoid damage. - Regularly inspect and clean the contacts to remove any debris or oxidation that could impair performance. - Follow WEG’s guidelines for periodic testing and calibration to maintain optimal operation. For industrial professionals seeking a reliable, high-performance contactor, the **WEG CWB38-11-30D77** delivers unmatched durability, efficiency, and versatility. Whether for motor control, automation, or power distribution, this contactor is a trusted choice for engineers and technicians worldwide.
  • High-performance electromagnetic operation for remote motor control
  • Durable design for millions of switching cycles in industrial environments
  • Integrated arc suppression for extended contact life and reduced maintenance
  • Auxiliary contacts for seamless integration into control circuits
  • Compact, modular design for easy installation and space efficiency

Specifications

Series
CWB38
Package Weight (Imperial)
0.937 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)
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.
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

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.