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Square D Q432250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Square D
Q432250
Molded Case Circuit Breaker
Brand
Square D
SKU
Q432250
Quantity
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Square D Q432250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D Q432250 - 250A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | Q432250-R |
| Series | Q4 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC |
| Frame Type | Q4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Push-to-Trip |
Quantity
Square D Q432250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Series | Q4 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC |
| Frame Type | Q4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Push-to-Trip |
Similar Items
350A 3 Pole Molded Case Circuit Breaker
400A 3 Pole Molded Case Circuit Breaker
Description
Operating as a core component in commercial power distribution, the Square D Q432250 is a 3-pole, 250A molded case circuit breaker. It features a thermal-magnetic trip unit with adjustable magnetic settings for accurate long-time and instantaneous protection. Designed with the I-Line plug-on mounting system, this breaker installs efficiently into Square D I-Line panelboards and switchboards. As a legacy Q-frame device, it is officially replaced by the JGA36250U31X model for modernizations.Specifications
| Brand | Square D |
|---|---|
| Series | Q4 |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC |
| Frame Type | Q4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 1 AWG - 600 kcmil (Al/Cu) or (2) 1 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Push-to-Trip |
Product FAQs
6 answersWhat panelboards are compatible with the Q432250 circuit breaker?
This breaker is designed specifically for Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-in connection to attach directly to the panel busbar.
What are the acceptable wire sizes for the load lugs on this breaker?
The load lugs accept a single conductor from 1 AWG to 600 kcmil or two conductors from 1 AWG to 250 kcmil. Both aluminum and copper wires are supported.
How does the adjustable magnetic trip function on this model?
The adjustable magnetic trip allows you to configure the instantaneous short-circuit pickup level. This is useful for accommodating high inrush currents, such as those from starting large motors, preventing nuisance tripping while maintaining fault protection.
Can I use an LA frame breaker in place of this Q4 frame breaker?
Q4 frame breakers are limited to 240VAC applications, while LA frame breakers are rated for up to 600VAC. Although they share similar physical dimensions in I-Line panels, you must verify your system voltage and panel specifications before substituting an LA frame for a Q4 frame.
What is the recommended modern replacement for the legacy Q432250?
As a legacy Q-frame device, it is officially replaced by the PowerPact J-frame series, specifically the JGA36250U31X model, for panel modernizations and upgrades.
How can I test the mechanical operation of this breaker safely?
The breaker features a push-to-trip button on the front face. Pressing this button manually trips the breaker, allowing you to verify the mechanical linkage is functioning properly without exposure to live electrical parts.
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