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Square D Q2L3125H Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Square D
Q2L3125H
Molded Case Circuit Breaker
Brand
Square D
SKU
Q2L3125H
Quantity
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Square D Q2L3125H - 125A 3 Pole Molded Case Circuit Breaker
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Description
Built for demanding electrical environments, the Square D Q2L3125H delivers 125 amps of thermal-magnetic protection in a 3-pole configuration. It utilizes fixed LI trip functions to safeguard commercial circuits against overloads and short circuits. This unit-mount MCCB is compatible with Square D NQOD panelboards, switchboards, and enclosures. Facilities can substitute this with the QDL32125. Boasting a 22kAIC rating at 240VAC, the breaker features a Visi-Trip indicator and standard lugs.Specifications
| Brand | Square D |
|---|---|
| Part Number | Q2L3125H-R |
| Series | Q2L |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | Q2L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Individual Enclosures, Switchboards, NQOD Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 4 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Common Trip, Quick-Make/Quick-Break, High Interrupting Capacity |
Product FAQs
6 answersIs the Square D Q2L3125H still manufactured?
The Q2L3125H is a legacy Q-frame circuit breaker that has been discontinued by Schneider Electric. Facilities can substitute this unit with the PowerPact Q-frame QDL32125, which provides similar specifications and a 25kAIC rating.
Which panelboards accept the Q2L3125H circuit breaker?
This unit-mount breaker is designed for Square D NQOD panelboards, switchboards, and individual enclosures that accommodate Q2L-frame bolt-on breakers. It will not fit in QO or Homeline residential load centers.
What does the H suffix in the Q2L3125H catalog number indicate?
The H suffix designates a high interrupting capacity. Standard Q2L breakers typically offer a 10kAIC rating, whereas the Q2L3125H provides a 22kAIC rating at 240V AC for more demanding electrical environments.
How is the Q2L3125H installed in a panel?
This is a feed-thru, unit-mount molded case circuit breaker. It bolts directly into compatible commercial panelboards or enclosures and connects via standard lugs, rather than plugging onto a busbar.
What wire sizes do the standard lugs on the Q2L3125H accept?
The included lugs are rated for aluminum or copper conductors ranging from 4 AWG to 300 kcmil. Proper torque specifications must be followed during installation to ensure a secure connection.
How does the trip unit on the Q2L3125H operate?
It features a thermal-magnetic trip unit with fixed long-time and instantaneous (LI) functions. The thermal component responds to prolonged overloads, while the magnetic component trips immediately during a short circuit.
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