OVERVIEW

Official designation: Allen-Bradley 140U-I6C3-C35 (Bulletin 140U, Molded Case Circuit Breaker)

Role/Application: Three-pole, I-frame UL-489 device providing fixed thermal and fixed magnetic protection for electrical circuits up to 480 Volts AC with a 35 Amps continuous current rating.

KEY SPECS SUMMARY

Power: 480 Volts AC

Interfaces / Ports: Non-interchangeable lugs

Indicators: N/A

Operating Temp: Minus 8 degrees C to 60 degrees C

Platform / Compatibility: Bulletin 140U I-frame

Limit: 65 kA interrupting capacity at 480 Volts

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum voltage rating for the three-pole 140U-I6C3-C35 circuit breaker?

A: The maximum rated operating voltage is 600 Volts AC and 250 Volts DC.

Wiring & Installation:

Q: What is the recommended terminal torque specification for the 140U I-frame terminals?

A: The standard torque requirement is 120 pound-inches or 13.5 Newton-meters.

Troubleshooting & Compatibility:

Q: What is the fixed magnetic trip setting range for the 35 Amps I-frame circuit breaker?

A: The instantaneous magnetic trip value is ten times the continuous current, which is 350 Amps.

Replacement & Upgrades:

Q: Is the 140U-I6C3-C35 circuit breaker still actively supported by the manufacturer?

A: The 140U series is discontinued; the recommended replacement is the Bulletin 140UT series.