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Eaton / Cutler-Hammer QCF2040 Miniature Circuit Breaker
- 40A
- 2 Pole
- Panel Mount
Eaton / Cutler-Hammer
QCF2040
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QCF2040
Quantity
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Eaton / Cutler-Hammer QCF2040 - 40A 2 Pole Miniature Circuit Breaker
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Description
Engineered for commercial and industrial applications, the Eaton QCF2040 is a 2-pole miniature circuit breaker that safeguards equipment from electrical faults. It is an essential component for maintaining system reliability. This unit features a cable-in/cable-out design that integrates seamlessly into OEM control panels, enclosures, and Eaton Quicklag panelboards. The front-mounting style comes equipped with standard box lugs for line and load connections.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QCF |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Panel Mount |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QCF |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | OEM Control Panels, Enclosures, Eaton Quicklag Panelboards |
| Wire Gauge | 14-4 AWG |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Non-Interchangeable Trip |
Product FAQs
7 answersWhat types of panels or enclosures is the Eaton QCF2040 compatible with?
The QCF2040 is designed for use in OEM control panels, enclosures, and Eaton Quicklag panelboards. It features a feed-thru, cable-in/cable-out connection design that does not require a traditional busbar.
How is the QCF2040 circuit breaker mounted within an enclosure?
The QCF2040 is engineered for front-mount applications. It supports panel mounting and features a feed-thru connection type, allowing line and load cables to be wired directly into the breaker's box lugs.
What wire sizes are accepted by the box lugs on this 40A breaker?
The terminal lugs on the QCF2040 accept wire ranging from 14 AWG to 4 AWG. Ensure proper torque specifications are followed during installation for secure connections.
How does the thermal-magnetic trip mechanism operate on the QCF2040?
It utilizes a fixed thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal component responds to sustained overloads, while the magnetic component provides instantaneous tripping during short circuits.
Is the QCF2040 suitable for high-fault industrial systems?
This breaker has a maximum interrupting rating of 10kAIC at 120/240VAC. It is intended for standard commercial or OEM control panel applications rather than high-fault industrial systems that require 22kAIC or 65kAIC ratings.
Is the QCF2040 a direct replacement for older Cutler-Hammer QCF breakers?
Yes, Eaton acquired Cutler-Hammer. The Eaton QCF2040 directly replaces older Cutler-Hammer branded breakers with the exact same QCF2040 catalog number, maintaining identical physical and electrical specifications.
Does the QCF2040 include ground fault (GFCI) or arc fault (AFCI) protection?
No, the QCF2040 is a standard thermal-magnetic circuit breaker providing overload and short-circuit protection. It does not include built-in GFCI or AFCI circuitry. If personnel or equipment ground fault protection is required, a QCGF or QCGFEP series breaker must be used instead.
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