Cutler Hammer RFA3040 - 40A, 3-Pole, Circuit Breaker

Meet the Cutler Hammer RFA3040 — a 40A, 3-Pole circuit breaker designed for the rigors of modern electrical distribution. This device provides dependable overcurrent protection across three phases, making it an ideal choice for panelboards, switchboards, and control panels where uptime and safety matter.

• 40A rating delivers precise protection for three-phase circuits, helping prevent equipment damage from overcurrent events
• 3-Pole design ensures simultaneous protection of all three electrical phases in a single device
• Suitable for panelboards, switchboards, control panels, distribution panels, and motor control centers
• Built on the trusted Cutler-Hammer platform for rugged, reliable performance in demanding environments
• Ideal for industrial, commercial, and OEM applications where safe operation is critical

Use cases and benefits

In factory settings, the RFA3040 protects motor feeders and three-phase distribution circuits within motor control centers, reducing the risk of damage from overcurrent and enabling faster fault isolation. In commercial electrical rooms, it helps maintain reliable service by quickly and cleanly interrupting faults. For OEM applications, this breaker provides a compact, plug-ready solution that integrates with existing three-phase power layouts.

Key specifications

• Model: RFA3040
• Current rating: 40A
• Poles: 3-Pole
• Breaker type: Circuit Breaker

Choosing the Cutler Hammer RFA3040 means prioritizing safety, reliability, and straightforward integration in your electrical distribution strategy. Whether upgrading a panelboard, equipping a switchboard, or configuring a motor control center, this 3-phase breaker helps keep systems protected and operating smoothly.