Eaton HFD3040L - 40 A, 600 V, 3-Pole Circuit Breaker | AmpState

Eaton HFD3040L is a 40A, 600V, 3-pole molded‑case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers.

• Space‑efficient molded‑case design maximizes panel real estate, helping you fit more circuits without sacrificing protection.
• Thermal‑magnetic trip unit delivers stable, repeatable protection by responding to both overloads and short‑circuit events, reducing nuisance trips and improving reliability.
• 3‑pole configuration ensures coordinated shutoff across all conductors for multi‑wire circuits, simplifying installation and enhancing safety.
• OEM‑matched compatibility engineered to work with matching Eaton and OEM load centers and panelboards for straightforward replacement and serviceability.
• Versatile applications ideal for residential, commercial, and light industrial panels that require robust 40A protection at up to 600V.

Technical snapshot

• Amperage Rating: 40A
• Voltage Rating: 600V
• Number of Poles: 3
• Type: Thermal‑magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short‑circuit protection
• Manufacturer: Eaton
• Part Number: HFD3040L

Practical use cases

Install the Eaton HFD3040L in service panels or load centers where space is at a premium and reliable protection is non‑negotiable. It’s well-suited for multi‑wire branch circuits in small commercial spaces, lighting and receptacle feeders in offices, and motor‑control circuits that operate at 40A—providing consistent protection up to 600V. When upgrading aging panelboards, the 3‑pole design simplifies coordination and makes retrofits smoother, while the compact form helps you maximize existing enclosure capacity.

Why choose the HFD3040L

If you’re aiming for a balance of compact footprint, dependable protection, and OEM compatibility, the HFD3040L stands out. The thermal‑magnetic trip mechanism offers predictable performance across a range of operating conditions, so you can trust it to protect critical circuits without frequent adjustments. Its 3‑pole arrangement supports safer, synchronized disconnection in multi‑wire circuits, a key advantage for modern panel designs in residential buildings and light commercial installations.

In short, the Eaton HFD3040L delivers streamlined protection where panel space matters, backed by the reliability and compatibility you expect from a trusted electrical distribution partner. For installers seeking a precise, durable 40A solution at 600V, this 3‑pole molded‑case breaker is purpose‑built to keep circuits safe and service simple.