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Eaton / Cutler-Hammer QCR2040 Miniature Circuit Breaker
- 40A
- 2 Pole
- DIN Rail
Eaton / Cutler-Hammer
QCR2040
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
QCR2040
Quantity
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Eaton / Cutler-Hammer QCR2040 - 40A 2 Pole Miniature Circuit Breaker
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Description
Part of Eaton's Quicklag QCR series, this 40A, two-pole miniature circuit breaker provides dependable protection for commercial environments. The unit features a space-saving 1/2-inch width per pole, ideal for high-density control panels. Designed for flexible installation, the breaker utilizes a rear-mounting provision with cable-in/cable-out box lug terminals. It integrates seamlessly into DIN rail setups. Rated for 10 kAIC at 120/240VAC, the device is HACR rated and UL 489 certified.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | QCR |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | DIN Rail |
| Voltage | 120/240VAC, 48VDC, 62.5VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 3kA @ 48VDC, 3kA @ 62.5VDC |
| Frame Type | QCR |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | DIN Rail, OEM Control Panels, Telecom Power Systems |
| 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 |
Product FAQs
6 answersCan the Eaton QCR2040 be installed in a standard residential load center?
No. The QCR2040 is a cable-in/cable-out breaker designed for DIN rail or rear chassis mounting in OEM control panels and telecom systems. It lacks the plug-on or bolt-on mounting clips required for standard load centers.
How are the line and load wires connected to the QCR2040?
This feed-thru breaker uses fixed box lugs for both the line and load connections. The lugs are designed to accept copper or aluminum wire ranging from 14 AWG to 4 AWG.
What is the difference between Eaton QCR and standard QC circuit breakers?
Both are Quicklag cable-in/cable-out breakers, but their mounting methods differ. The QCR series is built specifically for rear DIN rail mounting, whereas the standard QC series is designed for traditional flat panel mounting.
Is the QCR2040 suitable for telecom power systems?
Yes. The QCR2040 is frequently used in telecom applications because it carries a DC interrupting rating of 3kA at 48VDC and 62.5VDC, in addition to its standard 120/240VAC ratings.
What type of protection does the LI trip function provide?
The LI trip code stands for Long-Time and Instantaneous protection. The thermal element provides long-time protection against sustained overloads, while the magnetic element provides instantaneous tripping during short circuits.
Does the QCR2040 include ground fault or arc fault protection?
No. This is a standard thermal-magnetic circuit breaker. It does not contain the specialized circuitry required for Ground Fault Circuit Interrupter (GFCI) or Arc Fault Circuit Interrupter (AFCI) protection.
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