WEG CWB12-11-30C03 - CONTACTOR CWB12-11-30C03
WEG

CWB12-11-30C03

Alternate Item Number: 12542260

UPC: 7909158247561

Contact for Pricing

Overview

The **WEG CWB12-11-30C03** is a high-performance IEC contactor engineered for demanding industrial applications requiring reliable motor control, frequent switching, and robust electrical load management. Designed and manufactured by **WEG**, a globally recognized leader in industrial electric motors and automation solutions, this contactor meets stringent international standards including **IEC 60947** and **UL 508**, ensuring compliance and safety in global markets. With a compact footprint and modular design, the CWB12-11-30C03 is ideal for integration into motor starters, lighting control systems, HVAC units, conveyor systems, and automated machinery across industries such as manufacturing, mining, oil & gas, water treatment, and renewable energy. **Key Features and Design Advantages:** The CWB12-11-30C03 is built with a **3-pole configuration (3NO power poles)** rated for **12 Amps**, making it suitable for controlling medium-duty motors and resistive loads. Its **24V DC coil** (C03 designation) ensures compatibility with low-voltage control circuits, enabling safe and efficient remote operation via PLCs, relays, or pushbutton stations. The contactor incorporates **electromagnetic operation**, using a coil to energize and de-energize the power contacts, which minimizes wear and extends operational life even under frequent cycling conditions. A standout feature is the **“Zero-Width” mechanical interlock**, which allows for compact stacking of multiple contactors without sacrificing safety or performance. This design simplifies panel layout and reduces wiring complexity in multi-motor applications. Additionally, the **simple and compact mounting of surge suppressor blocks** enhances system reliability by protecting sensitive control electronics from voltage spikes during switching transients. The **auxiliary contact system** supports flexible control logic. The CWB12-11-30C03 includes **1 NO (normally open) and 1 NC (normally closed) auxiliary contacts** as standard, enabling feedback signaling, interlocking, and status monitoring within automation networks. These auxiliary contacts can be expanded using **front-mounted or side-mounted auxiliary contact blocks**, allowing customization for complex control schemes such as reversing starters, star-delta starting, or multi-speed motor control. **Applications and Industry Use Cases:** This contactor excels in environments where **reliable, high-cycle switching** is essential. Common applications include: - **Motor Control:** Direct-on-line (DOL) and reversing starters for pumps, fans, compressors, and machine tools. - **Lighting Control:** Reliable switching of large lighting loads in warehouses, stadiums, and commercial buildings. - **HVAC Systems:** Integration into rooftop units (RTUs), chillers, and air handling systems for precise temperature and airflow control. - **Conveyor Systems:** Used in material handling and logistics to control motors on belts, sorters, and automated guided vehicles (AGVs). - **Automation & Robotics:** Serving as a key component in PLC-controlled processes, enabling safe and efficient operation of robotic arms, CNC machines, and automated assembly lines. Its **rugged construction** and compliance with international standards make it suitable for harsh environments, including dusty, humid, or vibration-prone locations. The **easy-access power and control terminals** simplify installation and maintenance, reducing downtime and improving operational efficiency. **Why Choose WEG Contactors?** WEG has established itself as a trusted name in industrial electrical solutions, with over 50 years of innovation and a global presence in more than 100 countries. The CWB line of contactors reflects this legacy of quality, combining **precision engineering, durable materials, and advanced manufacturing processes** to deliver products that meet the rigorous demands of modern industry. Each contactor undergoes rigorous testing to ensure consistent performance, long service life, and adherence to safety certifications. For engineers and system integrators, selecting the **WEG CWB12-11-30C03** means choosing a component that delivers **dependable operation, simplified installation, and future-proof compatibility** with evolving automation platforms. Whether upgrading legacy systems or designing new installations, this contactor provides the performance and reliability needed to keep industrial operations running smoothly and efficiently.
  • IEC 60947 and UL 508 compliant for global industrial use
  • 12 Amp, 3-pole (3NO) configuration for medium-duty motor control
  • 24V DC coil (C03) for low-voltage control circuit compatibility
  • “Zero-Width” mechanical interlock for compact panel mounting
  • Auxiliary contacts (1NO + 1NC) with expansion options for complex control logic
  • Surge suppressor block mounting for enhanced system protection
  • Rugged construction for harsh industrial environments
  • Easy-access terminals for simplified installation and maintenance

Specifications

Current Rating
12 A
Poles
3
Series
CWB
Package Weight (Imperial)
1.069 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.