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Square D QJA221004 Molded Case Circuit Breaker
- 100A
- 2 Pole
- I-Line
Square D
QJA221004
Molded Case Circuit Breaker
Brand
Square D
SKU
QJA221004
Quantity
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Square D QJA221004 - 100A 2 Pole Molded Case Circuit Breaker
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Description
Designed for high-capacity electrical systems, this 100A PowerPacT Q-Frame breaker offers reliable thermal-magnetic trip functions. It is engineered to safeguard industrial and commercial distribution networks. Featuring a BC phase connection, the QJA221004 mounts into Square D I-Line panelboards and switchboards. Facility managers can also use it to replace older Q22100 breakers. This 2-pole MCCB boasts a 100kAIC rating at 240VAC, a trip-free mechanism, and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | QJA |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 208Y/120VAC, 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 | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, NOM-003-SCFI, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Trip-Free Mechanism |
Product FAQs
9 answersWhat does the "4" at the end of the QJA221004 catalog number indicate?
In Square D PowerPacT Q-Frame breakers, the final digit specifies the phase connection. The "4" indicates a factory-installed BC phase connection for I-Line panelboards.
What does the "J" in the QJA221004 part number represent?
The "J" designates the interrupting rating family. It signifies a high interrupting capacity of 100kAIC at 240VAC, which is higher than the standard "D" (25kAIC) or "G" (65kAIC) ratings in the Q-Frame series.
Can the QJA221004 be used to replace older Square D breakers?
Yes, PowerPacT Q-Frame breakers are direct replacements for legacy Square D Q2 series breakers. The QJA221004 can replace a discontinued 2-pole, 100A Q2 breaker with a BC phase connection.
Which panelboards are compatible with the QJA221004?
This breaker features an I-Line style plug-in connection, making it compatible with Square D I-Line panelboards (such as the HCN, HCM, HCW, and HCWM series) and I-Line switchboards. It will not fit in standard QO or NQ load centers.
How much mounting space does the QJA221004 require on an I-Line bus?
As a 2-pole Q-Frame breaker, it requires 3 inches of mounting space on the I-Line bus, which equates to 1.5 inches per pole.
What is the recommended lug torque for the QJA221004?
The load-side lugs should be torqued to 248 lb-in (28 N.m) when terminating 4 AWG to 300 kcmil aluminum or copper conductors.
What does the "LI" trip function code mean on this breaker?
The "LI" code indicates that the thermal-magnetic trip unit provides Long-Time (L) protection for overloads and Instantaneous (I) protection for short circuits. Both the thermal and magnetic trip points are fixed on this model.
Is the QJA221004 rated for HACR applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
What safety standards does the QJA221004 meet?
The QJA221004 is UL 489 Listed and CSA Certified for use in commercial and industrial power distribution systems.
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