Eaton QC3040H 3P40A 1240V Lug In Lug Out Breaker is designed for efficient circuit protection in industrial and commercial applications. This robust circuit breaker boasts a three-pole design, ensuring reliable performance and easy installation. With high ratings, it provides superior durability and safety, making it an ideal choice for your electrical needs.
| Brand | Eaton |
|---|---|
| Type | Molded-Case (MCCB) |
| Amperage | 40 A |
| Poles | 3-Pole |
| Voltage | 240V |
| Interrupting Rating | 10 kA |
| Mounting | Bolt-On |
| Frame / Series | QC |
| Catalogue # | QC3040H |
The Eaton QC3040H is a 3-pole, 40A, 240V, 10kA bolt-on moulded-case circuit breaker from Eaton's QC frame series, featuring a lug-in / lug-out termination configuration for direct conductor connections without bus stabs. As an MCCB, it is suited for commercial and industrial panelboards, switchboards, and distribution panels — not residential loadcentres. It is typically applied in Eaton/Cutler-Hammer compatible industrial panelboards that accept QC-frame bolt-on breakers. Send us your panelboard model and we'll confirm fitment.
"Lug In / Lug Out" means the breaker uses mechanical lug terminals on both the line and load sides instead of bus-stab connections. This makes it ideal for applications where conductors are connected directly to the breaker — such as in distribution sections, sub-feed arrangements, or wherever the breaker is not mounted on a bus bar. It gives you flexibility in panel or switchboard layouts that require direct wiring.
The Eaton QC frame series is considered a legacy/obsolete line in some configurations. Northern Breaker Group specializes in hard-to-find and obsolete breakers, and we maintain stock of or can source QC-frame units. Contact our Calgary, Edmonton, or Vancouver counter — or request a quote online — and we'll advise on availability of new, reconditioned, or equivalent replacement options.
The QC3040H's lug-in / lug-out termination makes it well-suited for use as a main disconnect or sub-feed breaker in a panelboard or switchboard, as well as a branch breaker in larger distribution equipment. Its 3-pole, 40A, 240V, 10kA rating supports both roles in commercial and industrial installations. Always verify with your panel manufacturer's documentation or consult a licensed electrician to ensure it meets your specific application requirements.
