OVERVIEW

Official designation: Allen-Bradley 140U-H6C3-C15-A (Bulletin 140U, Molded Case Circuit Breaker)

Role/Application: H-Frame, 3-pole MCCB rated 15 A at 480V AC, providing fixed thermal-magnetic protection. Designed for robust industrial circuit defense in diverse high-altitude environments.

KEY SPECS SUMMARY

Power: 480 Volts AC

Interfaces / Ports: Line and load terminals

Indicators: Trip status flag

Operating Temp: Minus 25 to plus 70 degrees C

Platform / Compatibility: H-Frame; UL 489

Limit: 35 kA at 480V

Lifecycle: Discontinued, replacement 140G

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum rated continuous current for the H-Frame 140U-H6C3-C15-A breaker?

A: The breaker has a 15 Amperes continuous current rating.

Wiring & Installation:

Q: Does the altitude derating for this MCCB apply at or below 2000 meters elevation?

A: No derating is required for operation at or below 2000 meters elevation.

Troubleshooting & Compatibility:

Q: What is the high interrupting capacity of this H-Frame model at 480 Volts AC?

A: The unit features a high interrupting capacity (kAIC) of 35 kA at 480V AC.

Replacement & Upgrades:

Q: What is the recommended current Allen-Bradley series to replace the discontinued 140U circuit breakers?

A: The current replacement is the Allen-Bradley Bulletin 140G series MCCB.