WEG CWB12-11-30D45 - CONTACTOR CWB12-11-30D45
WEG

CWB12-11-30D45

Alternate Item Number: 12679522

UPC: 7909158543069

Contact for Pricing

Overview

The WEG CWB12-11-30D45 contactor is a high-performance, electrically-operated switch engineered for the rigorous demands of industrial motor control and power circuit management. Designed by WEG, a globally recognized leader in electrical engineering and automation solutions, this contactor delivers exceptional reliability, durability, and operational efficiency for applications requiring frequent switching of inductive and resistive loads. Whether deployed in motor starters, lighting systems, or automated machinery, the CWB12-11-30D45 ensures consistent performance under demanding industrial conditions. This contactor operates on the principle of electromagnetic actuation, where a control signal energizes the coil to close the power contacts, enabling remote control of motors, heaters, and other electrical loads. Upon de-energization, the coil releases the contacts, breaking the circuit with minimal arcing due to integrated arc suppression technology. This design not only enhances safety but also extends the operational lifespan of the device, making it ideal for high-cycle applications such as conveyor systems, pumps, and HVAC units in manufacturing plants, water treatment facilities, and commercial buildings. A key advantage of the WEG CWB12-11-30D45 is its rugged construction, which is engineered to withstand harsh environments. The device features robust terminal connections, vibration-resistant components, and protective enclosures that meet or exceed industrial standards for ingress protection (IP ratings). Additionally, the contactor includes auxiliary contacts for control circuit signaling, allowing seamless integration into PLC-based automation systems and motor control centers (MCCs). This flexibility makes it a preferred choice for engineers designing scalable and future-proof control panels. Industries such as automotive manufacturing, food processing, mining, and renewable energy rely on WEG contactors for their proven track record of performance and longevity. WEG’s commitment to innovation is reflected in the CWB12-11-30D45, which incorporates advanced materials and manufacturing processes to minimize maintenance requirements and reduce total cost of ownership. Professionals in the electrical and automation sectors trust WEG for its global support network, comprehensive documentation, and compliance with international standards such as IEC, UL, and CE, ensuring seamless integration into any industrial infrastructure. Selecting the right contactor involves evaluating factors such as load type, switching frequency, ambient temperature, and control voltage compatibility. The WEG CWB12-11-30D45 is optimized for medium-duty applications, offering a balance between compact size and high breaking capacity. Installation is straightforward, with clear wiring diagrams and mounting options that accommodate both DIN rail and panel-mount configurations. For optimal performance, professionals recommend periodic inspection of contacts and coils to ensure reliable operation over millions of switching cycles. In summary, the WEG CWB12-11-30D45 contactor is more than just a switching device—it is a critical component in the backbone of industrial automation. Its combination of durability, precision, and WEG’s engineering excellence makes it an indispensable tool for engineers, electricians, and facility managers seeking to enhance operational efficiency and reduce downtime. Whether upgrading existing systems or designing new installations, this contactor delivers the reliability and performance required to meet the challenges of modern industrial environments.
  • Electromagnetic coil operation for remote motor and load control
  • Integrated arc suppression for enhanced safety and longevity
  • Rugged construction with IP-rated protection for harsh environments
  • Auxiliary contacts for seamless PLC and automation integration
  • WEG-engineered reliability with global compliance (IEC, UL, CE)

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.