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Square D QJA221752 Molded Case Circuit Breaker
- 175A
- 2 Pole
- I-Line
Square D
QJA221752
Molded Case Circuit Breaker
Brand
Square D
SKU
QJA221752
Quantity
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Square D QJA221752 - 175A 2 Pole Molded Case Circuit Breaker
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Description
Providing exceptional fault-clearing capabilities, this 175A molded case breaker is ideal for commercial environments. It comes factory-configured with an AC phase connection. The breaker mounts seamlessly into Square D I-Line panelboards. It acts as a reliable cross-reference for discontinued Q22175 models, allowing contractors to modernize older systems. Capable of interrupting up to 100kA at 240VAC, this QJ-series component ensures maximum safety and includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | QJA |
| Amperage | 175A |
| 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Phase Connection AC (Factory Configured) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | ANCE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
5 answersWhat type of panelboards accept the QJA221752 breaker?
This unit is designed specifically for Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-in connection and cannot be installed in standard NQ or NF load centers.
Can the QJA221752 be used to replace older Square D breakers?
Yes, this PowerPacT Q-Frame breaker serves as a direct, modernized replacement for legacy Q22175 models in existing I-Line systems.
What does the final digit in the QJA221752 catalog number signify for installation?
The "2" at the end of the part number indicates that the breaker is factory-configured for an AC phase connection on the I-Line bus.
How can I quickly identify if the QJA221752 has tripped in a busy panel?
This breaker includes a Visi-Trip indicator, which displays a bright red flag in the window when the breaker trips. This allows for rapid fault identification without manually testing each handle.
Does the QJA221752 feature adjustable trip settings?
No, this breaker utilizes a fixed thermal-magnetic trip unit. Both the long-time and instantaneous trip functions are factory-set and non-interchangeable.
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