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Allen Bradley 140U MCB 140U-H3C3-D12
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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140U-H3C3-D12

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The Allen-Bradley Bulletin 140U series 140U-H3C3-D12 circuit breaker is a 3-pole circuit breaker that is designed to provide overload and short-circuit protection. The 125 Amps rated circuit breaker can be used for both branch circuit protection and main circuit protection in individual enclosures, panelboards, and switchboards. The wide interrupting range allows a single circuit breaker to address multiple applications.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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Technical specifications for 140U-H3C3-D12

BrandAllen-Bradley / Rockwell Automation
Series140U MCB
Part Number140U-H3C3-D12
Product typeCircuit breaker
FrameH
Poles3
Current rating 125 Amps
Power loss25 Watts
Weight1.36 kilograms
Dimensions5.5 x 3 x 3 inches
Trip unitThermal - magnetic
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.

The Allen-Bradley Bulletin 140U series 140U-H3C3-D12 circuit breaker is a 3-pole circuit breaker that is designed to provide overload and short-circuit protection. This 125 Amps rated circuit breaker can be used for both branch circuit protection and main circuit protection in individual enclosures, panelboards, and switchboards. The wide interrupting range allows a single circuit breaker to address multiple applications. Accessories can be installed in the field which saves time and increases flexibility. The compact circuit breaker design leads to further space conservation. The 140U-H3C3-D12 circuit breaker is a Frame H circuit breaker with a thermal-magnetic trip unit. It weighs approximately 1.36 kilograms and it measures 5.5 x 3 x 3 inches. The ambient operating temperature range for the 140U-H3C3-D12 circuit breaker is from -8.9 to 60 degrees Celsius.

The circuit breaker has a breaking capacity range of 30 to 39 kiloamps. At 50 Hertz frequency, the 140U-H3C3-D12 circuit breaker offers 85 kiloamps of ultimate breaking capacity and 43 kiloamps of service breaking capacity at 220 or 240 Volts AC, 40 kiloamps of ultimate breaking capacity and 30 kiloamps of service breaking capacity at 380 or 415 Volts AC, 25 kiloamps of ultimate breaking capacity and 18 kiloamps of service breaking capacity at 525 Volts AC, and 4 kiloamps of ultimate breaking capacity and 3 kiloamps of service breaking capacity at 690 Volts AC. The insulation voltage rating according to the IEC 60947-2 standards is 690 Volts AC for the auxiliary circuit and 750 Volts AC for the main poles. The impulse withstand ratings are 4 kilovolts for the auxiliary circuits and 6 kilovolts for the main breaker conductors. Up to 25 Watts of energy is dissipated as heat during operation under normal load conditions.

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