WEG CWB12-11-30D39 - CONTACTOR CWB12-11-30D39
WEG

CWB12-11-30D39

Alternate Item Number: 12876241

UPC: 7909158952717

Contact for Pricing

Overview

The WEG CWB12-11-30D39 contactor is a high-performance, electrically-controlled switch engineered for demanding industrial control applications where reliability and durability are paramount. Designed by WEG, a global leader in motor and power 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. Built to handle millions of switching operations, the CWB12-11-30D39 ensures consistent performance even in harsh industrial environments, reducing downtime and maintenance costs for businesses. This contactor operates on electromagnetic principles, using a coil to close and open power contacts remotely. When energized, the coil generates a magnetic field that pulls the contacts together, completing the circuit and allowing current to flow. Upon de-energization, a spring mechanism returns the contacts to their open position, safely interrupting the circuit. The CWB12-11-30D39 is particularly well-suited for applications requiring high switching frequencies, such as conveyor systems, pumps, fans, and HVAC units, where precise control and long operational life are critical. Key features of the WEG CWB12-11-30D39 include robust arc suppression technology, which minimizes electrical arcing during switching to extend contactor lifespan and reduce wear. The contactor also incorporates auxiliary contacts for control circuits, enabling seamless integration into complex automation systems. Its rugged construction ensures resistance to dust, moisture, and mechanical stress, making it ideal for use in manufacturing plants, processing facilities, and other industrial settings where environmental conditions can be challenging. Industries such as oil and gas, mining, water treatment, and food processing rely on WEG contactors for their proven reliability and compliance with international safety standards. Professionals in these sectors trust WEG’s reputation for innovation and quality, knowing that the CWB12-11-30D39 meets stringent performance and durability requirements. Installation is straightforward, with standard mounting options and compatibility with a wide range of control systems, ensuring minimal downtime during setup or replacement. For engineers and maintenance teams seeking a dependable contactor that delivers long-term performance, the WEG CWB12-11-30D39 stands out as a cost-effective solution. Its combination of electromagnetic reliability, arc suppression, and rugged design makes it a go-to choice for critical applications where operational continuity is non-negotiable. Whether used in motor starters, lighting controls, or automated machinery, this contactor provides the performance and durability needed to keep industrial operations running smoothly.
  • Electromagnetic operation for reliable remote switching
  • Arc suppression technology for extended contactor lifespan
  • Auxiliary contacts for seamless integration into control systems
  • Rugged construction for harsh industrial environments
  • Millions of switching operations for long-term reliability

Specifications

Package Weight (Imperial)
0.827 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.