WEG CWB18-11-30D45 - CONTACTOR CWB18-11-30D45
WEG

CWB18-11-30D45

Alternate Item Number: 12679527

UPC: 7909158543182

Contact for Pricing

Overview

The WEG CWB18-11-30D45 Contactor is a robust, electrically-controlled switch engineered for the demanding requirements of industrial automation and power distribution. Designed for frequent and reliable switching of motor and power circuits, this contactor is a critical component in ensuring the efficient and safe operation of a wide array of electrical loads. At its core, the CWB18-11-30D45 utilizes a powerful electromagnetic coil to actuate its main power contacts. This mechanism allows for remote operation, a fundamental requirement for modern automated systems where direct manual intervention is impractical or unsafe. The ability to control motors, lighting systems, and other significant electrical loads from a central control panel or PLC (Programmable Logic Controller) is made possible by contactors like this WEG model. Built with longevity and resilience in mind, the WEG CWB18-11-30D45 is constructed to withstand millions of switching operations, a testament to its industrial-grade design. This durability is essential in environments characterized by high duty cycles and continuous operation. Key features contributing to its performance and reliability include integrated arc suppression technology, which effectively mitigates the damaging effects of electrical arcing during contact opening and closing, thereby extending the lifespan of the device. Furthermore, the inclusion of auxiliary contacts provides essential functionality for control circuits, enabling complex interlocking schemes, status feedback, and signaling within larger control systems. The rugged construction ensures that the CWB18-11-30D45 can operate reliably even in harsh industrial settings, resisting vibration, dust, and temperature fluctuations. Applications for the WEG CWB18-11-30D45 are extensive and span across numerous industries. It is a cornerstone in motor starters, where it handles the high inrush currents associated with starting electric motors. It also finds vital use in lighting control systems for large facilities, HVAC systems, pump controls, and as a switching element in automated manufacturing lines and process control systems. Professionals in electrical engineering, maintenance, and automation rely on WEG's reputation for quality and performance when specifying contactors for critical applications. The CWB18-11-30D45, with its specific catalog designation, represents a dependable solution for engineers seeking to implement safe, efficient, and remotely controllable electrical switching. Choosing the right contactor involves considering factors such as voltage, current rating, number of poles, and auxiliary contact configurations, all of which are integral to the design and application of this WEG product. Its role in preventing electrical hazards and ensuring operational continuity makes it an indispensable component in modern industrial infrastructure.
  • Electrically-controlled switch for frequent motor and power circuit switching.
  • Utilizes electromagnetic coil for remote operation of electrical loads.
  • Designed for millions of switching operations, ensuring long service life.
  • Features integrated arc suppression for enhanced durability and safety.
  • Includes auxiliary contacts for control circuit integration and system feedback.

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)
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
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.