WEG CWM18-00-20V04 - CONTACTOR CWM18-00-20V04
WEG

CWM18-00-20V04

Alternate Item Number: 10451972

UPC: 7890355055922

Contact for Pricing

Overview

The WEG CWM18-00-20V04 contactor is a high-performance, electrically-operated switch engineered for reliable motor and power circuit control in demanding industrial environments. Designed as part of WEG’s renowned CWM series, this 20-amp contactor delivers robust performance for frequent switching operations, making it an essential component in motor starters, lighting control systems, and automated machinery across a wide range of industries. Built with electromagnetic coil actuation, the CWM18-00-20V04 ensures precise and repeatable operation, enabling remote control of motors and other electrical loads with minimal maintenance requirements. Engineered for durability, the CWM18-00-20V04 features arc suppression technology to minimize contact wear and extend operational lifespan, even under heavy cycling conditions. Its rugged construction is optimized for industrial settings, where reliability and longevity are critical. The contactor includes auxiliary contacts for control circuit integration, allowing seamless coordination with relays, PLCs, and other automation components. This versatility makes it ideal for applications in manufacturing, HVAC systems, conveyor belts, pumps, and other machinery requiring dependable switching performance. Selecting the right contactor involves evaluating voltage ratings, current capacity, and mechanical endurance. The CWM18-00-20V04 is rated for 20 amperes, making it suitable for medium-duty applications where consistent performance is required. Its compact design facilitates easy installation in control panels, junction boxes, or motor control centers, while compliance with industry standards ensures compatibility with global electrical systems. WEG’s reputation for engineering excellence and innovation in industrial automation further reinforces the reliability of this contactor, trusted by professionals worldwide for mission-critical applications. Installation considerations include proper sizing based on load requirements, ensuring adequate ventilation for heat dissipation, and adhering to electrical safety protocols. The CWM18-00-20V04’s modular design allows for straightforward integration into existing systems, reducing downtime during upgrades or maintenance. Whether used in single-phase or three-phase configurations, this contactor provides the operational stability needed to maintain productivity in high-demand environments. Backed by WEG’s global support network and decades of experience in industrial electrical solutions, the CWM18-00-20V04 contactor stands as a dependable choice for engineers, technicians, and facility managers seeking a balance of performance, durability, and ease of use. Its combination of advanced features, robust construction, and manufacturer-backed reliability makes it a cornerstone component in modern industrial control systems.
  • 20A current rating for medium-duty industrial applications
  • Electromagnetic coil actuation for remote motor and load control
  • Arc suppression technology for extended contactor lifespan
  • Auxiliary contacts for seamless integration with control circuits
  • Rugged construction for harsh industrial environments

Specifications

Current Rating
20 A
Series
CWM
Package Weight (Imperial)
0.704 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-40

BFB-40

CONTACT BLOCK BU BFB-40
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.