Allen-Bradley 140U-I6C3-C15 - 15 A, 3-Pole Bolt-On Circuit Breaker | AmpState

When reliability matters, the Allen-Bradley 140U-I6C3-C15 stands up to the challenge. This 15A, 3-pole bolt-on molded case circuit breaker is engineered to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Designed for OEM compatibility and rugged enough for real-world installations, it’s a smart choice for electricians and facilities managers who won’t compromise on safety or performance.

Key features that matter in the field

• Secure bolt-on mounting ensures a rigid, vibration-resistant bus connection, reducing the risk of loosening and trips in demanding environments.
• Thermal-magnetic trip unit provides stable, repeatable protection by responding accurately to both sustained overloads and sudden short circuits.
• OEM loadcenter and panelboard compatibility designed to align with matching Allen-Bradley systems for streamlined replacements and upgrades.
• Versatile applications suitable for residential, commercial, and light industrial electrical setups where dependable protection is essential.
• Molded-case construction delivers durable performance in compact form factors, optimizing space in crowded panels.

What problems does it solve?

For panelboards and load centers prone to vibration, heat buildup, or intermittent trips, the 140U-I6C3-C15 provides a robust safeguard against nuisance faults and damaging faults alike. Its 15A rating is ideal for protecting branch circuits without unnecessarily limiting circuit capacity, while the three-pole design helps safeguard multi-phase systems and ensures coordinated protection across shared feeds.

Use cases and practical scenarios

• Replacing aging breakers in residential subpanels where a compact, bolt-on unit is required.
• Upgrading a small commercial panelboard to improve reliability on lighting and convenience circuits.
• Installing in light industrial service panels where vibration resistance and solid bus connections are critical for long-term performance.
• Situations needing OEM-compatible components to ensure warranty compliance and seamless integration with existing equipment.

Why this model stands out

Unlike generic substitutes, the 140U-I6C3-C15 is purpose-built for Allen-Bradley panel ecosystems, offering a precise fit and predictable trip behavior that technicians can rely on. The combination of bolt-on mounting and a thermal-magnetic trip unit translates into reduced installation time, fewer call-backs for false trips, and lasting protection for critical circuits in everyday facilities.

Specifications at a glance

• Manufacturer: Allen-Bradley
• Part number: 140U-I6C3-C15
• Amperage rating: 15A
• Poles: 3
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Applications: Branch circuit overcurrent and short-circuit protection

Installation tips and best practices

For optimal performance, ensure torque specifications on the mounting bolts are followed per your panelboard’s maintenance guide, and verify compatibility with your existing OEM loadcenter components. Store and handle breakers in a clean, dry environment to preserve the integrity of the thermal-magnetic trip unit for consistent protection performance over time.

Choose the Allen-Bradley 140U-I6C3-C15 for a trusted, purpose-built solution that delivers dependable protection, straightforward installation, and OEM-friendly compatibility for a wide range of panelboard and load center configurations.