Square D QDM22125TN Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Square D
QDM22125TN
Molded Case Circuit Breaker
Brand
Square D
SKU
QDM22125TN
Quantity
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Square D QDM22125TN - 125A 2 Pole Molded Case Circuit Breaker
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Description
Part of the PowerPacT Q-Frame series, this 125A MCCB provides robust overcurrent protection for commercial applications. It features thermal-magnetic trip technology with long-time and instantaneous (LI) functions for reliable fault defense. Engineered for bolt-on installation, it mounts into EZ Meter-Pak centers and panelboards. It serves as a direct replacement for legacy Q22125 models. Rated 25 kAIC at 240VAC, this two-pole unit includes a Visi-Trip indicator and is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | QDM22125TN |
| Series | QDM |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC |
| Frame Type | QDM |
|---|---|
| Terminal Type | Stud/Tapped Pad |
| For Use With | EZ Meter-Pak Meter Centers, Panelboards, 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, Terminal Nut Kit |
|---|---|
| Accessories | Terminal Nuts (Load Side) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
7 answersCan the QDM22125TN replace older Square D Q-frame breakers?
Yes, this breaker serves as a direct drop-in replacement for legacy Square D Q22125 models.
What does the "TN" suffix indicate on this breaker?
The "TN" suffix specifies the terminal configuration. It features standard lugs on the line (ON) side and threaded studs with terminal nuts on the load (OFF) side.
What type of equipment is the QDM22125TN designed to fit?
This bolt-on breaker is engineered for installation in Square D EZ Meter-Pak meter centers, as well as compatible panelboards and switchboards.
What wire sizes and materials are compatible with the QDM22125TN lugs?
The line-side lugs accept both aluminum and copper conductors ranging from 4 AWG to 300 kcmil.
Are the trip settings adjustable on the QDM22125TN?
No, this breaker features a fixed thermal-magnetic trip unit with factory-set long-time and instantaneous (LI) protection functions.
Why does the QDM22125TN show both 25kA and 10kA interrupting ratings?
The interrupting rating depends on the standard applied. It is rated for 25kA at 240VAC under UL, CSA, and NOM standards for North American applications, and 10kA at 240VAC under IEC standards.
What is the maximum frame size for the QDM22125TN?
While this specific breaker is rated for 125A, it is built on the Square D PowerPacT Q-Frame, which has a maximum capacity of 250A.
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