OVERVIEW

Official designation: Allen-Bradley 140U-K6D3-D35 (140G Series, Molded Case Circuit Breaker)

The Allen-Bradley 140U-K6D3-D35 is a 3-pole K-frame Molded Case Circuit Breaker providing thermal-magnetic overcurrent protection in industrial power circuits. It features a fixed thermal and adjustable magnetic trip unit with a continuous current rating of 350 Amps.

KEY SPECS SUMMARY

Power: 480V AC maximum rated voltage

Interfaces / Ports: Three power poles

Indicators: Refer to the latest manufacturer manual.

Operating Temp: 0 to 40 degrees C ambient for standard rating

Platform / Compatibility: Bulletin 140U/140G series

Limit: 65 kA Interrupting Current at 480V

Lifecycle: Active, Refer to the latest manufacturer manual.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the primary dimensions and weight of the K-frame MCCB?

A: Dimensions are 140 x 108.5 x 205 millimeters, with an approximate weight of 4.99 kg.

Wiring & Installation:

Q: What is the calibrated ambient temperature for the continuous current rating?

A: The circuit breaker is calibrated to deliver the rated continuous current at a standard 40 degrees C ambient temperature.

Troubleshooting & Compatibility:

Q: Does the trip unit for this device feature fixed thermal or adjustable thermal protection?

A: This specific catalog number features fixed thermal protection and adjustable magnetic trip settings.

Replacement & Upgrades:

Q: Are auxiliary contacts or shunt trips included with the base unit purchase?

A: Terminal lugs and accessories like auxiliary or alarm contacts are typically ordered separately from the base circuit breaker.