The 140U-D6D3-C12 circuit breaker is an Allen-Bradley/Rockwell Automation Bulletin 140U series compact circuit breaker. It has 3 poles and it supports fixed thermal/magnetic circuit protection. The 140U-D6D3-C12 compact circuit breaker can be used to protect feeder circuits, control circuits, and branch circuits in systems. It can operate at an AC voltage rating of 600 Volts AC and at a maximum ambient temperature rating of 40 degrees Celsius or 104 degrees Fahrenheit. The 140U-D6D3-C12 compact circuit breaker’s current rating is 12 Amps and it is CE certified.
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Part Number | 140U-D6D3-C12 |
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Product Type | Molded Case Circuit Breaker |
Frame | D |
Rated Current | 12 A |
Magnetic Trip | 15-20 A |
Breaking Capacity | 65 kA |
Interrupting Rating | 65 kA |
Poles | 2 and 3 |
Rated Insulation Voltage | 690V IEC |
Rated Frequency | 50/60 Hz |
The 140U-D6D3-C12 circuit breaker is an important protection component that helps to prevent damage to equipment. This model is part of the 140U-D series by Allen-Bradley/Rockwell Automation. The unit is used in different industries and for a variety of applications. It is intended for global use and it complies with the UL and European standards. The 140U-D6D3-C12 circuit breaker provides overload protection according to the IEC/EN 60947-2, UL489, and CSA 22.2 standards. This molded-case circuit breaker has a high interrupting rating and it has a higher overall rating for panel short circuits according to the National Electrical Code (NEC). The 140U-D6D3-C12 has 3 poles and a rated current of 12 Amps. The breaking capacity at 50 Hertz operating frequency is 65 ICU/50 ICS at 400 to 415 Volts and 525 Volts, while its breaking capacity at 690 Volts is 10 ICU/6 ICS.
The 140U-D6D3-C12 breaker unit has a small footprint that reduces panel space costs and provides a 100% rating at up to a current of 15 Amps. The device can be used for back-feeding purposes at 240 Volts and 480Y/277 Volts. This unit is designed for feeder circuits, heating and air conditioning, control circuits, and switching devices. All the available accessories are meant to be installed in the field. The 140U-D series offers the following accessories: connection modules, flexible wire modules, extension shaft support, compact busbars, feeder terminals, and load terminal covers. Accessories can be ordered separately under their own catalog numbers provided by the manufacturer. The 140U-D6D3-C12 circuit breaker can be used for the main disconnect switch when combined with the accessories. The thermal-magnetic circuit breaker has a total power loss of 7.5 Watts maximum. The 140U-D6D3-C12 breaker has a solid tolerance to vibrations/shock and its ambient temperature is between -25 and 60 degrees Celsius (-13 and 140 degrees Fahrenheit).
Revision Part # | Also known as | |
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140U-D6D3-C12 Ser A | 140U-D6D3-C12/A, Series A, Rev A | Request a quote |
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The 140U-D6D3-C12 Molded Case Circuit Breaker by Allen-Bradley has a D Frame and a 12 A Rated Current. It operates with a 65 kA Breaking Capacity and a 65 kA Interrupting Rating.