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Allen Bradley Bulletin 140 140-CA20

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140-CA20

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The 140-CA20 auxiliary contact block from Allen Bradley's Bulletin 140 series serves a pivotal role in motor control applications. It is designed to be mounted internally at the front and is compatible with the 140-CMN motor protection circuit breaker.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 140-CA20

ManufacturerAllen Bradley
Product TypeAuxiliary Contact Block
Product LineBulletin 140
Part Number140-CA20
Weight0.13 lbs (0.06 kg)
UPC662072614044
Mounting PositionInternal front mount
Number of Poles2 poles
Compatibility140-CMN Motor Protection Circuit Breaker
Frequency Rating50 to 60 Hertz
Contact Configuration2 Normally Open (NO) contacts
Rated Impulse Withstand Voltage6 kilovolts
Rated Insulation Voltage690 Volts AC
Mechanical Endurance30,000 operations
Maximum Electrical EnduranceUp to 5,000 operations
Shock Resistance30 G for 11 milliseconds
Ambient Operating Temperature-25°C to 60°C (-13°F to 140°F)
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The Allen Bradley 140-CA20 is an auxiliary contact block designed for reliable performance in various motor control systems. This specific model is part of the Bulletin 140 series, offering an internal front mounting position. It consists of two poles and is engineered to work seamlessly with the 140-CMN motor protection circuit breaker. The device operates under frequency conditions ranging from 50 to 60 Hertz, making it versatile for different applications.

The contact configuration includes two normally open contacts (NO), providing flexibility in circuit design. With a rated insulation voltage of 690 volts AC, this contact block ensures robust insulation properties. It can endure an impulse withstand voltage rating of 6 kilovolts, indicating its capacity to handle high-voltage spikes.

When it comes to durability, this auxiliary contact block is rated for mechanical endurance up to 30,000 operations, emphasizing its longevity in service. In terms of electrical performance, it supports a maximum of 5,000 operations, making it efficient for numerous applications. The 140-CA20 also demonstrates impressive shock resistance, rated at 30 G for periods of 11 milliseconds.

Operating across a wide temperature range from -25°C to 60°C (or -13°F to 140°F), this component is dependable in erratic environmental conditions. Overall, the Allen Bradley 140-CA20 auxiliary contact block combines versatile functionality with robust specifications, serving as an essential element in motor protection circuits.