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Allen Bradley 140U MCB 140U-H3C3-C40-A

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140U-H3C3-C40-A

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The 140U-H3C3-C40-A from Allen Bradley is a robust molded case circuit breaker providing essential overcurrent protection for electrical systems. With a current rating of 40 amperes and a three-pole design, this device is well-suited for various applications within an operational voltage range of up to 600 volts AC.

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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 140U-H3C3-C40-A

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breakers
Product Line140U MCB
Part Number140U-H3C3-C40-A
Weight2.38 lbs (1.08 kg)
UPC662073832062
Poles3 Pole
Trip UnitThermal Magnetic
Frame SizeFrame H
Interrupt Rating35 kA at 480 Volts AC
Current Rating40 Amperes
Auxiliary ContactsInternal Switch (1 NO + 1 NC)
Voltage RangeUp to 600 Volts AC
HandleManual toggle handle
Trip FunctionLong time thermal overload + instantaneous trip
CertificationsUL489, CSA, IEC, CE
Wire Size14-1/0 AWG
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Part number 140U-H3C3-C40-A is an Allen Bradley molded case circuit breaker that delivers critical safety for electrical installations. Designed with three poles, this device is effective in managing current levels up to 40 amperes. Rated for operational voltages that can reach up to 600 volts AC, the breaker assists in various power distribution applications. This model utilizes a thermal magnetic trip unit, which combines the functionality of thermal overload protection with instantaneous trip capabilities. These features ensure that the circuit breaker reacts promptly to overload and fault conditions.

In terms of performance, it can endure an interrupting rating of 35 kA at 480 volts AC, making it resilient against potential surge conditions. The auxiliary contacts are internally wired, providing both one normally open and one normally closed contact for additional operations or monitoring capabilities. A manual toggle handle allows for simple operation and reset of the breaker.

The breaker conforms to numerous standards, including UL489, CSA, IEC, and CE certifications, which ensure compliance with international safety norms. This model also accommodates wire sizes ranging from 14 to 1/0 AWG, further enhancing its flexibility for various installation scenarios. Overall, the 140U-H3C3-C40-A is a reliable component for safeguarding electrical circuits against potential faults.