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Allen Bradley 140U MCB 140U-Q3D3-D60
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140U-Q3D3-D60

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The 140U-Q3D3-D60 circuit breaker is a three-pole molded case circuit breaker with a built-in fixed thermal–adjustable magnetic trip unit. The rated continuous current and thermal trip ratings for the 140U-Q3D3-D60 circuit breaker are both 600 Amps.

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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-Q3D3-D60

BrandAllen-Bradley / Rockwell Automation
Series140U MCB
Part Number140U-Q3D3-D60
Product typeCircuit breaker
FrameQ
Poles3
Current rating600 Amps
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 140U-Q3D3-D60 circuit breaker is a three-pole molded case circuit breaker with a built-in fixed thermal–adjustable magnetic trip unit. The rated continuous current and thermal trip ratings for the 140U-Q3D3-D60 circuit breaker are both 600 Amps. Buttons are provided on each of the 3-poles on the breaker for changing the magnetic trip settings. A suitably sized screwdriver can be used for adjusting the magnetic trip threshold. The interrupting capacity ratings at 400 Volts AC and 480 Volts AC voltage are 45 kiloamps and 35 kiloamps, respectively. The 140U-Q3D3-D60 circuit breaker comes in a Q-frame enclosure and it belongs to Bulletin 140U product series from Allen-Bradley. The maximum current rating for the Q-fame circuit breakers is 600 Amps. The dimensions of the 140U-Q3D3-D60 circuit breaker are 12.5 x 8.25 x 4.375 inches.

Agency approvals for the 140U-Q3D3-D60 circuit breaker include the UL 489, KEMA – KEUR, CE CSA 22.2, and IEC 60947-2 standards. The terminal box lugs for the circuit breaker need to be ordered separately from Allen-Bradley. Performance specifications for the 140U-Q3D3-D60 circuit breaker include the following interrupting ratings at 60 Hertz: 65 kiloamps at 240 Volts AC, 35 kiloamps at 480 Volts AC, and 25 kiloamps at 600 Volts AC. The ultimate breaking capacity specifications at 50 Hertz are 85 kiloamps at 220 Volts AC, 45 kiloamps at 415 Volts AC, 30 kiloamps at 500 Volts AC, and 20 kiloamps at 690 Volts AC. Applications for the 140U-Q3D3-D60 circuit breaker include branch circuit and main circuit protection applications. The breaker can provide protection against short circuits and overloads. To minimize the risk of injury and equipment damage, only experienced and trained professionals should install, service, and repair the 140U-Q3D3-D60 circuit breaker.

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