Square D QJA222251 Molded Case Circuit Breaker
- 225A
- 2 Pole
- I-Line
Square D
QJA222251
Molded Case Circuit Breaker
Brand
Square D
SKU
QJA222251
Quantity
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Square D QJA222251 - 225A 2 Pole Molded Case Circuit Breaker
New
Quantity
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Description
Belonging to the Q-Frame lineup, the Square D QJA222251 is a 2-pole, 225A MCCB designed for commercial environments. It utilizes fixed thermal-magnetic technology for 240VAC circuits. Designed for Square D I-Line switchboards, this plug-on breaker simplifies installation. It is fully compatible as a substitute for older Q22225 models. With a 100kAIC rating, the breaker provides high-level defense against short circuits. It includes an AB phase connection and is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Series | QJA |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | AB Phase Connection (Factory Configured) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
6 answersWhich panelboards are compatible with the QJA222251 circuit breaker?
This breaker is designed specifically for group-mounted installation in Square D I-Line panelboards and switchboards.
Can the QJA222251 replace older Square D Q2 series circuit breakers?
Yes, the PowerPacT Q-frame circuit breakers are direct replacements for legacy Square D Q2 series devices.
What does the "1" suffix in the QJA222251 catalog number indicate?
The "1" at the end of the part number specifies an AB phase connection for the I-Line plug-on bus.
What wire sizes are accepted by the lugs on this breaker?
The factory-installed box lugs accept aluminum or copper conductors ranging from 4 AWG to 300 kcmil.
Are the trip settings adjustable on the QJA222251?
No, this breaker features a fixed thermal-magnetic trip unit with non-adjustable long-time and instantaneous (LI) trip functions.
Does the QJA222251 include a push-to-trip feature?
Yes, PowerPacT Q-frame circuit breakers include an integral push-to-trip button on the cover to manually trip the breaker and verify mechanical operation.
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