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OVERVIEW
Official designation: Allen-Bradley 140U-K3D3-D30 (Bulletin 140U, Molded Case Circuit Breaker)
Role/Application: Three-pole, K-frame MCCB providing fixed thermal and adjustable magnetic trip protection for industrial power distribution systems up to 480 Volts AC.
KEY SPECS SUMMARY
Power: 480 Volts AC
Interfaces / Ports: End Cap Bolt-On terminals
Indicators: N/A
Operating Temp: Minus 8 degrees C to 60 degrees C
Platform / Compatibility: Bulletin 140U K-frame
Limit: 35 kA interrupting capacity at 480 Volts
Lifecycle: Discontinued
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What are the protection features of the 140U-K3D3-D30 MCCB trip unit?
A: The breaker provides fixed thermal overload protection and an adjustable magnetic instantaneous trip.
Wiring & Installation:
Q: What is the estimated weight of the 140U K-frame breaker for installation purposes?
A: The approximate weight is 11.15 pounds or 5.07 kilograms.
Troubleshooting & Compatibility:
Q: What is the continuous current rating for this K-frame molded case circuit breaker?
A: The continuous current rating for the 140U-K3D3-D30 model is 300 Amps.
Replacement & Upgrades:
Q: What is the recommended product family to replace the discontinued Bulletin 140U series?
A: The current replacement product line is the Allen-Bradley Bulletin 140UT MCCB series.
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| Model Name | See this page for details |
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| Country of Manufacture or Origin | See this page for details |
| Manufacturer | See this page for details |
| After-sales Service Contact or Customer Support Number | See this page for details |
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