Eaton Cutler-Hammer RFDN100 100A 3P 600V Circuit Breaker, NEMA 3R | AmpState

The Eaton Cutler-Hammer RFDN100 is built for everyday electrical protection with precision. This 100 A, 3-pole circuit breaker is designed for use in panelboards, load centers, and distribution systems, delivering reliable interrupting protection across 3-phase circuits up to 600 V AC. With its NEMA 3R rating, it’s well-suited for outdoor or weather-exposed installations, giving you dependable performance where it matters most.

Smart for maintenance teams, panel builders, and spare inventory, the RFDN100 is a direct part-number match that simplifies replacements and reduces downtime. When you stock this part, you’re choosing a proven, compatible component from Eaton Cutler-Hammer—a name trusted in electrical protection for decades. AmpState makes it easy to source with confidence, and if you’re unsure about fit, we’re ready to help you confirm compatibility.

Key specifications at a glance

• Amperage: 100 A
• Poles: 3 (3P)
• Voltage rating: 600 V
• Type: Circuit Breaker for panelboards, load centers, and distribution
• Enclosure rating: NEMA 3R (suitable for outdoor or weather-exposed environments)
• Manufacturer: Eaton Cutler-Hammer
• Part number: RFDN100

Who should consider the RFDN100

• Maintenance teams that rely on quick, accurate part replacements to keep facilities online
• Panel builders standardizing on a consistent Eaton Cutler-Hammer lineup
• Electrical distributors and warehouses seeking reliable stock for 3-phase, 600 V systems

Use cases and practical scenarios

Scenario 1: Upgrading or replacing protection in a 3-phase distribution panel serving commercial or light industrial loads. The 100 A capacity provides solid feeder protection for motors, conveyors, or multi-circuit feeders while keeping integration straightforward with existing Eaton components.

Scenario 2: Outdoor or weather-prone installations—such as exterior service enclosures or protected outdoor panels—where a NEMA 3R-rated breaker helps maintain reliability despite exposure to rain and dust.

Scenario 3: Standardizing spare parts across multiple panels or sites. By stocking the RFDN100, you ensure uniform fit across builds and quick swaps, reducing field labor and diagnostic time when maintenance is needed.

Why this matters for your project

Choosing the RFDN100 isn’t just about the electrical rating; it’s about predictability and trust. A direct part-number match means fewer substitutions, faster ordering, and consistent performance across your distribution network. The 3-pole design supports balanced 3-phase protection, while the 600 V rating covers a wide range of commercial and light industrial applications. And with AmpState as a stocking option, you have a reliable source for timely procurement and expert compatibility checks.

Tips for fit and installation

Verify that your panelboard or load center accepts the RFDN-series breakers and that the bus connection and mounting style align with the RFDN100. If you’re unsure about compatibility, send us a message and we’ll help confirm the fit to prevent reorder delays or mismatches.

Ready to secure dependable protection for your distribution network? Add the Eaton Cutler-Hammer RFDN100 to your lineup and trust that you’re stocking a proven solution tailored for 3-phase, 600 V systems. Available from AmpState.