WEG CWB18-11-30D77 - CONTACTOR CWB18-11-30D77
WEG

CWB18-11-30D77

Alternate Item Number: 12961447

UPC: 7894171458219

Contact for Pricing

Overview

The **WEG CWB18-11-30D77 contactor** is a high-performance, electrically-operated switch engineered for demanding industrial control applications. Designed to handle frequent switching of motor and power circuits, this contactor leverages electromagnetic coils to reliably open and close power contacts, enabling precise remote control of motors, lighting systems, and automated machinery. Built to withstand millions of operational cycles, the CWB18-11-30D77 is a critical component in motor starters, HVAC systems, conveyor belts, and industrial automation lines where durability and performance are non-negotiable. **Key Features and Technical Advantages:** - **Robust Electromagnetic Operation:** The contactor’s electromagnetic coil ensures rapid and consistent switching, reducing wear and extending operational lifespan. This design minimizes downtime in critical applications, making it ideal for environments with high switching frequencies. - **Arc Suppression Technology:** Integrated arc suppression mechanisms protect contacts from excessive arcing during opening and closing, significantly reducing maintenance requirements and enhancing safety in high-current applications. - **Auxiliary Contacts for Control Circuits:** The CWB18-11-30D77 includes auxiliary contacts that allow for seamless integration into control circuits, enabling interlocking, signaling, and status monitoring without additional hardware. - **Industrial-Grade Construction:** Constructed with rugged materials, this contactor is engineered to operate reliably in harsh industrial environments, including those with vibration, dust, and temperature fluctuations. Its compact design optimizes panel space while maintaining robust performance. - **Compatibility and Versatility:** Designed for compatibility with a wide range of industrial control systems, the CWB18-11-30D77 supports standard voltage ratings and can be paired with overload relays for comprehensive motor protection. **Typical Applications and Industry Use Cases:** The WEG CWB18-11-30D77 contactor is a versatile solution for multiple industries, including manufacturing, mining, oil and gas, and water treatment. It is commonly deployed in: - **Motor Starters:** As part of motor control centers (MCCs), it enables smooth starting and stopping of induction motors, reducing inrush currents and protecting equipment from damage. - **Lighting Controls:** In large-scale lighting systems, such as warehouses or stadiums, the contactor provides reliable switching for energy-efficient operation. - **Automated Machinery:** Used in CNC machines, robotic assembly lines, and packaging systems, it ensures precise control of electrical loads in automated processes. - **HVAC Systems:** The contactor manages high-power loads in heating, ventilation, and air conditioning systems, contributing to energy efficiency and system reliability. - **Conveyor Systems:** In material handling applications, it controls motors driving conveyor belts, ensuring smooth and uninterrupted operation in logistics and distribution centers. **Selection and Installation Considerations:** When selecting a contactor like the CWB18-11-30D77, professionals prioritize factors such as current rating, voltage compatibility, and mechanical durability. The CWB18-11-30D77 is optimized for applications requiring frequent switching and high reliability, making it a preferred choice for engineers designing control panels for industrial automation. Installation involves mounting the contactor on a DIN rail or panel, wiring the power and control circuits, and ensuring proper grounding for safety and performance. **Why Choose WEG for Industrial Contactors?** WEG is a globally recognized leader in electrical engineering, renowned for its high-quality motors, drives, and control products. With decades of innovation and a commitment to sustainability, WEG delivers solutions that meet the rigorous demands of modern industrial applications. The CWB18-11-30D77 contactor exemplifies this expertise, offering unmatched reliability, energy efficiency, and ease of integration. Trusted by industries worldwide, WEG products are backed by comprehensive technical support, ensuring seamless implementation and long-term performance. For engineers, electricians, and procurement professionals seeking a dependable contactor for motor control and industrial automation, the WEG CWB18-11-30D77 delivers the performance, durability, and versatility required to meet operational challenges head-on.
  • High-performance electromagnetic operation for frequent switching
  • Integrated arc suppression for reduced maintenance & enhanced safety
  • Auxiliary contacts for seamless control circuit integration
  • Industrial-grade construction for harsh environments
  • Compatible with motor starters, HVAC, and automated machinery

Specifications

Material
Poly
Mounting Type
DIN rail or panel mounting
Series
CWB18
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.