Square D QDM22225TN Molded Case Circuit Breaker
- 225A
- 2 Pole
- Unit Mount
Quantity
Square D QDM22225TN - 225A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding power distribution networks, the Square D QDM22225TN delivers 225A of 2-pole circuit protection. It utilizes fixed thermal and magnetic trip elements to safeguard commercial circuits against overloads and short circuits. Designed for unit-mount installations, this PowerPacT Q-Frame breaker integrates into EZ Meter-Pak centers and standard panelboards. It serves as an exact substitute for discontinued Q22225 models.Specifications
| Brand | Square D |
|---|---|
| Part Number | QDM22225TN |
| Series | QDM |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| 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, Metering Equipment, 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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Terminal Nut Kit (Load Side) |
| Standards | CSA C22.2 No. 5, HACR, 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
5 answersWhat equipment is the QDM22225TN designed to fit?
This 225A Q-frame breaker is engineered for installation in Square D EZ Meter-Pak meter centers, metering equipment, switchboards, and compatible panelboards.
Can the QDM22225TN be used to replace older legacy breakers?
Yes, this model serves as an exact replacement for legacy Square D Q22225 circuit breakers, allowing for seamless upgrades in existing electrical systems.
How does the TN suffix affect the installation of this breaker?
The TN suffix indicates that the breaker is equipped with stud or tapped pad terminals rather than standard mechanical lugs. It requires a bolt-on connection for unit mounting.
Are the trip settings on the QDM22225TN adjustable?
No, this breaker features a thermal-magnetic trip unit with fixed long-time and instantaneous (LI) functions, meaning the trip curve cannot be adjusted in the field.
What are the acceptable wire sizes for this 225A breaker?
It accommodates aluminum or copper conductors ranging from 4 AWG to 300 kcmil when properly terminated.
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