Eaton / Cutler-Hammer CHQ245 Miniature Circuit Breaker
- 45A
- 2 Pole
- Plug-On
Eaton / Cutler-Hammer
CHQ245
Miniature Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
CHQ245
Quantity
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Eaton / Cutler-Hammer CHQ245 - 45A 2 Pole Miniature Circuit Breaker
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45A 2 Pole Miniature Circuit Breaker
45A 2 Pole Miniature Circuit Breaker
Description
Designed specifically for compatibility, this two-pole 45A breaker serves as a UL-classified alternative to the QO245. It mounts into existing Square D QO panelboards, offering a cost-effective solution without sacrificing safety or performance. Featuring a 10kAIC rating at 120/240V, the unit utilizes proven thermal-magnetic trip technology. It includes common trip functionality and carries an HACR rating, making it suitable for heating, air conditioning, and refrigeration equipment circuits.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | CHQ245 |
| Series | CHQ |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | CHQ |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | Square D QO Load Centers |
| Wire Gauge | (1) 14-8 AWG (Cu/Al) or (2) 14-10 AWG (Cu/Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Standards | UL 489 |
|---|---|
| Approval | UL, cUL |
| Temp Rating | 40C |
| Construction Features | Classified for use in Square D QO Panelboards, Common Trip |
| Special Features | UL Classified Replacement |
Product FAQs
6 answersWhat load centers are compatible with the Eaton CHQ245?
This breaker is UL-classified for use in Square D QO load centers. It is designed to be mechanically and electrically interchangeable with QO series breakers, requiring two 3/4-inch spaces on the bus bar.
What wire sizes do the terminals on the CHQ245 accept?
The box lugs accommodate either a single 14-8 AWG copper or aluminum wire, or two 14-10 AWG copper or aluminum wires. Ensure proper torque specifications are followed during installation.
Is the Eaton CHQ245 a direct replacement for the Square D QO245?
Yes, the CHQ245 is a UL-classified replacement for the Square D QO245. It provides the same 45-amp, 2-pole thermal-magnetic protection for 120/240V circuits.
What does the 10kAIC rating on the CHQ245 indicate?
The 10kAIC rating means this breaker can safely interrupt up to 10,000 amps of fault current at 120/240V without sustaining internal damage or causing an arc flash hazard.
How is the CHQ245 installed in a panel?
It utilizes a plug-on connection that snaps directly into the bus bar of a Square D QO load center. It requires two standard 3/4-inch spaces for installation.
What type of protection does the CHQ245 provide?
It features a thermal-magnetic trip unit with fixed long-time and instantaneous (LI) functions. This provides dual protection, tripping slowly for mild overloads and instantly for severe short circuits.
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