Eaton / Cutler-Hammer QCR1020 Miniature Circuit Breaker
- 20A
- 1 Pole
- DIN Rail
Quantity
Eaton / Cutler-Hammer QCR1020 - 20A 1 Pole Miniature Circuit Breaker
New
Quantity
Description
Built for overcurrent protection, the Eaton QCR1020 miniature circuit breaker is rated 20A with a single circuit arrangement and one pole. It operates at 120/240VAC with a 10kA interrupting rating at that voltage. This Quicklag family breaker belongs to the QCR series and mounts on a DIN rail. It has a screw clamp terminal connection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | QCR1020 |
| Series | QCR |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| 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 Thermal, Fixed Magnetic |
| Standards | HACR, UL 489 |
|---|---|
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
7 answersHow should I use the 20A rating when selecting the Eaton QCR1020?
The 20A rating is the breaker's nominal current rating for overcurrent protection. Select it according to the circuit load, conductor ampacity and applicable sizing requirements, rather than treating 20A as an instantaneous trip threshold.
How do I check whether its interrupting rating is adequate?
The Eaton QCR1020 has a 10kA interrupting rating at 120/240VAC. The available fault current at the installation point must not exceed that rating, and the circuit voltage must be within the breaker's voltage rating.
Can I adjust the trip settings on the Eaton QCR1020?
No. Its thermal and magnetic trip settings are fixed. The thermal element provides long-time protection against sustained overloads, while the magnetic element provides instantaneous protection against high-current faults.
How is the Eaton QCR1020 mounted?
It mounts on DIN rail. Plan the installation around rail mounting and leave access to the toggle actuator and screw-clamp terminals.
What does the screw-clamp terminal connection mean for installation?
Screw-clamp terminals secure conductors through a screw-operated clamp. Arrange the wiring so the terminal screws remain accessible for conductor termination and inspection.
Does the Eaton QCR1020 require a neutral connection?
No neutral connection is required at the breaker. It provides single-pole overcurrent protection for a single-phase circuit; keep the circuit's neutral wiring requirements separate from the breaker's connections.
What do its UL, CSA and HACR credentials mean for selection?
UL and CSA approvals support selection for projects requiring those approvals. HACR refers to heating, air-conditioning and refrigeration applications; select the breaker according to the equipment's circuit protection requirements as well as its 20A and 120/240VAC ratings.
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