Square D Q1250 Molded Case Circuit Breaker
- 50A
- 2 Pole
- Plug-On
Quantity
Square D Q1250 - 50A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for legacy power distribution, the Square D Q1250 is a 50A, two-pole molded case circuit breaker. It delivers reliable thermal-magnetic protection for residential and commercial branch circuits requiring a 240VAC rating. This plug-on breaker mounts into older Square D Q1 load centers and NQO panelboards. For modern upgrades, this frame has been replaced by the QO250 model. Rated at 10kAIC, it features standard LI protection, a Visi-Trip indicator, and is HACR rated for HVAC use.Specifications
| Brand | Square D |
|---|---|
| Part Number | Q1250-R |
| Series | Q1 |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q1 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Q1 Load Centers, NQO Panelboards |
| Wire Gauge | 8 AWG - 2 AWG (Al/Cu) |
| Max Wire | 2 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip |
Product FAQs
6 answersWhat panels are compatible with the Q1250 circuit breaker?
The Q1250 is designed specifically for legacy Square D Q1 load centers and NQO panelboards. It features a plug-on mounting style that fits these older enclosures.
Can I use a modern QO250 breaker in place of the Q1250?
Not directly. While the QO250 is the modern 50A equivalent, QO breakers have a narrower physical footprint. The Q1250 is an original wide-frame breaker that ensures a proper physical fit in older Q1 and NQO enclosures without requiring panel retrofitting.
What wire sizes are accepted by the Q1250 lugs?
The load side lugs on the Q1250 accept both aluminum and copper wiring ranging from 8 AWG to 2 AWG. Ensure proper torque specifications are followed during installation to maintain a secure connection.
Is the Q1250 suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires a 50A, 240VAC circuit.
What does the LI trip function on the Q1250 mean?
The LI designation indicates that this thermal-magnetic breaker provides Long-Time (L) protection for sustained overloads and Instantaneous (I) protection for immediate short-circuit faults. Both the thermal and magnetic trip points are fixed.
Does the Q1250 feature a Visi-Trip indicator?
Yes, this breaker includes a Visi-Trip indicator. This feature provides a clear visual confirmation when the breaker has tripped, allowing electricians and maintenance personnel to rapidly identify faults in the panel.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- JTJeff T.ReviewingSquare D Q12100 - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/23/18Refurbished breaker
Found the correct breaker, it was very easy to find. Great price and shipped out on time. Definitely recommend this company.