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CWB - CONTACTORS

CWB - CONTACTORS
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CWB - CONTACTORS Compacts in size. Giants in technology. Motors | Automation | Energy | Transmission & Distribution | Coatings

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CWB - Contactors Summary Presentation Main Characteristics Benefits Certifications Technology within your Reach Energy Savings Space Optimization in Electrical Panels Flexibility and Modularity in Assembly of Electric Panels Construction Characteristics Applications Selection Table Reliability and Safety Accessory Overview Accessories Application Forms Direct On-line Starter Reversing Starters Star-Delta Starters Contactors for Lighting Circuits Technical Data Dimensions

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COMPACTS IN SIZE. GIANTS IN TECHNOLOGY. Developed according to IEC/EN 60947 and UL 508 international standards, the CWB and CAWB line of contactors complies with the global requirements of a wide range of industrial applications. ■ Supply voltage from 12 to 600 V; ■ Low consumption coils; ■ ■ Compact product; ■ Built-in auxiliary contacts (1NO and 1NC); ■ ■ Enclosure for surge suppressors; ■ ■ Easy identification of the control voltage; ■ ■ “Zero-width” mechanical interlock; ■ Easy connection busbars for quick assembly of more compact reversing and star-delta starters; Compact starters can...

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Benefits Modular and compact Highly reliable Suitable for different applications Internationally-recognized quality Simplified installation Energy saving European Union South Africa Colombia Notes: ) Not available for CAWB.. 1 2) Certification for CWB95...125 in progress.

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Technology within your Reach The use of finite-element analysis and state-of-the-art modeling softwares for simulation of electromagnetic and electromechanical systems provide WEG CWB contactors with an improved project with reduced contact bouncing. The outcome reached by WEG’s R&D team ensures a product with long mechanical and electrical lifespan in a reduced size and with lower energy consumption. The electric contacts of CWB contactors are manufactured with special silver alloys which ensure excellent electric conductibility and high contact reliability. During operation, the...

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Energy Savings Low Consumption Coils The low-consumption coils of the CWB contactors enable safe operation with minimum energy consumption of up to 5.8 W in direct current, and up to 7.5 VA in alternating current (for power contactors up to 38 A and auxiliary contactors). In addition to the energy saving, the low consumption of the contactor coils allows using power supplies and transformers with lower rated power. When well dimensioned and properly applied, the traditional electric motor starting methods, such as direct on-line (reversing and nonreversing) and star-delta starters that use...

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Space Optimization in Electrical Panels Compact Solution As they are compact, 45 mm wide available in up to 38 A (18.5 kW at 380 V AC-3 three-phase), 54 mm wide available from 40 to 80 A (37 kW at 380 V AC-3 three-phase), and 72 mm wide available from 95 to 125 A (55 kW at 380 V AC-3 three-phase), the CWB contactors provide a general reduction in size of electrical panels in comparison to traditional solutions with contactors of the same specification. Side by side mounting CWB38 45 mm <-► Built-in Auxiliary Contacts 1NO + 1NC The configuration of the two built-in auxiliary contacts (1NO +...

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Space Optimization in Electrical Panels Simple and Compact Mounting of Surge Suppressor Blocks The coils of CWB contactors operate smoothly with a low level of disturbance in the control circuits. However, in order to reduce voltage surges due to the coil switching even further, WEG has developed surge suppressor blocks especially for the CWB line of contactors, which ensure limitation or even completely eliminate the undesired interferences that may be caused on opening the contactor coil. Surge suppressor blocks are easily mounted on CWB contactors without the need of any kind of tools...

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Flexibility and Modularity in Assembly of Electric Panels Easy-Connection Busbars and Connectors The smooth integration between the CWB contactor line, overload relays and manual motor protectors enables simple and quick mounting of compact starters, besides protection sets for low-voltage electric motors with excellent cost effectiveness. The modularity and flexibility of the easy-connection busbars and connectors reduce the mounting time, also preventing possible errors. Available for the whole CWB line, the easy-connection system allows the mounting combined with WEG manual motor...

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Easy Access Power and Control Terminals All power terminals, auxiliary contacts and coils provide users with fast front access, facilitating installation, measurements and interventions for preventive and corrective maintenance of starters. Additional Contact Blocks In addition to the auxiliary contacts already built into the CWB contactors (1NO + 1 NC), it is possible to increase their number up to 6 contacts by adding auxiliary contact blocks, available in version for front fitting (BFB) or side fitting (BLB/BLRB). These accessories are compatible with the entire line of 9 A to 125 A CWB...

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Construction Characteristics Opening for mechanical interlock Power contacts, easily identified Control terminals asymmetrically arranged in relation to the auxiliary contacts, preventing misconnections Mounting with screws Auxiliary contacts incorporated, easily identified and separated from the power contacts, preventing misconnections Indelible labeling of the technical data to help the user use the product properly Easy mounting of surge suppressor block without adding volume

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Applications The characteristics of the CWB contactors make them suitable for applications in many different segments. Paper & Cellulose Irrigation and Pumping Systems Sugar & Alcohol Civil Construction Machines and Processes in General Load Lifting

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Selection TableThree-Pole Power Contactors from 9 A a 125 A (AC-3) Ie max. (Ue <440 V) Replace “♦” by the appropriate coil voltage code3). Notes: 1) Orientative values; 2) Weights for contactors with alternating current control circuit. For direct current control circuit, add 0.110 kg to the CWB9...18 models, 0.120 kg to the CWB25...38 models and 0.060 kg to the CWB5 80 models. For CWB95/110 with electronic coil add 0.010 kg.

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