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Eaton / Cutler-Hammer QCF2045 Miniature Circuit Breaker
- 45A
- 2 Pole
- Panel Mount
Eaton / Cutler-Hammer
QCF2045
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QCF2045
Quantity
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Eaton / Cutler-Hammer QCF2045 - 45A 2 Pole Miniature Circuit Breaker
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Description
The QCF2045 is an industrial miniature breaker from Eaton's Quicklag family. Delivering 45A of thermal-magnetic protection, it features a compact profile to save space in commercial environments. Designed for front-mounting, it installs into Eaton Quicklag panelboards and OEM enclosures. It utilizes a cable-in/cable-out connection method for straightforward wiring. Rated at 10 kAIC at 120/240V, the unit provides dependable trip functions. It is HACR rated and meets UL 489 standards.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QCF |
| Amperage | 45A |
| 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, Shunt Trip, Auxiliary Switch, DIN Rail Adapter |
|---|---|
| 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, HID Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhat types of panels or enclosures is the QCF2045 compatible with?
It is designed for use in OEM control panels, standalone enclosures, and Eaton Quicklag panelboards. It features a cable-in/cable-out connection, making it highly adaptable for custom power feed applications where traditional plug-on or bolt-on bus connections are not used.
How is this Quicklag circuit breaker mounted?
The QCF2045 utilizes a cable-in/cable-out, feed-thru design. It can be front-mounted to a panel using a face mounting clip, such as the QCFCLIP, or installed on a standard 35mm DIN rail, which is common in HVAC and industrial control panels.
Is the QCF2045 suitable for heating and cooling equipment?
Yes, this thermal-magnetic breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires dedicated overcurrent protection.
Is this the same as a Cutler-Hammer QCF2045?
Yes. Eaton acquired the Cutler-Hammer brand, so this breaker serves as the direct, exact replacement for legacy Cutler-Hammer and Westinghouse models bearing the QCF2045 catalog number.
What type of protection does the LI trip function provide?
The LI (Long-Time and Instantaneous) designation means this thermal-magnetic breaker provides dual protection. The long-time thermal element protects against sustained overloads, while the instantaneous magnetic element trips immediately during a short circuit.
Does this breaker provide GFCI or AFCI protection?
No, the QCF2045 is a standard thermal-magnetic circuit breaker. It provides standard overload and short-circuit protection but does not include ground fault (GFCI) or arc fault (AFCI) circuitry.
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