AB 40CA4-4000 Three-pole AC contactor

Allen-Bradley Bulletin 500 40CA4-4000 Contactor Overview

The Allen-Bradley Bulletin 500 40CA4-4000 is a three-pole AC contactor belonging to the Bulletin 500 series, known for its ruggedness and reliability in various motor control applications.

Product Detailed Description

• Function:

• Controls the starting and stopping of electric motors.

• Switches three-phase AC circuits.

• Provides overload protection for motors when used with appropriate overload relays.

• Its control capabilities can be expanded by adding auxiliary contact blocks.

• Features:

• Rugged industrial design suitable for harsh environments.

• Straight-through wiring design reduces moving parts and enhances reliability.

• Easy visual inspection and replacement of contacts.

• Offers a wide range of coil voltage options.

• Optional auxiliary contact blocks for additional control and indication.

• DIN rail or panel mounting.

Product Parameters

As specific model parameters may vary slightly, the following are typical parameters based on the 40CA4 series. Always refer to the official datasheet for the specific 40CA4-4000 model:

• Number of Poles:

• 3 poles

• Rated Current (Ie):

• Motor Control (AC-3): Typically around 90 A (varies depending on voltage and application).

• Resistive Load (AC-1): Typically higher than the AC-3 rating.

• Rated Voltage (Ue):

• Up to 600V AC.

• Coil Voltage (Uc):

• Available in various AC and DC voltage options (e.g., 24V AC/DC, 110V AC, 230V AC). The model suffix may indicate the specific coil voltage.

• Auxiliary Contacts (Built-in):

• Typically features one built-in normally open (NO) or normally closed (NC) auxiliary contact, depending on the specific model.

• Add-on Auxiliary Contact Blocks:

• Yes, additional auxiliary contact blocks can be stacked.

• Terminal Type:

• Screw terminals.

• Mounting Type:

• DIN rail or panel mounting.

• Degree of Protection:

• Typically IP20 (terminal area), IP00 (contactor body).

• Standards Compliance:

• E.g., IEC 60947-4-1, UL 508, CSA C22.2 No. 14.

Product Advantages

• High Reliability:

• The Bulletin 500 series is known for its reliable performance in various industrial applications.

• Rugged and Durable:

• Designed to withstand harsh industrial environments.

• Easy Maintenance:

• Straight-through wiring and easily inspectable contacts simplify maintenance.

• Flexibility:

• Wide range of coil voltages and expandable auxiliary contact options make it suitable for diverse applications.

• Global Certifications:

• Complies with major international standards, facilitating global use.

Precautions

• Correct Selection:

• Select the appropriate contactor model based on the motor's rated current, voltage, and application category (AC-3 or AC-1).

• Ensure the coil voltage matches the control circuit power supply.

• Correct Installation:

• Follow Allen-Bradley's installation guidelines, ensuring the contactor is securely mounted and properly wired.

• Overload Protection:

• Always use with a suitable overload relay to protect the motor from overload damage.

• Safe Operation:

• Adhere to relevant electrical safety regulations during installation, maintenance, and operation.

• Regular Inspection:

• Periodically inspect the contactor's contacts and connections to ensure they are in good working order.

Product Applications

• Motor Control:

• Controlling the starting and stopping of various industrial motors, such as pumps, fans, compressors, and conveyors.

• Heating, Ventilation, and Air Conditioning (HVAC):

• Controlling motors in HVAC systems.

• Lighting Control:

• Controlling large industrial or commercial lighting systems.

• Resistive Load Switching:

• Switching resistive loads such as heating elements.

• General Industrial Applications:

• Suitable for various applications requiring reliable three-phase AC circuit switching.

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