Siemens / Murray MDA2200 Miniature Circuit Breaker
- 200A
- 2 Pole
- Plug-On
Quantity
Siemens / Murray MDA2200 - 200A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Part of the legacy Murray MDA series, this 200-amp main breaker provides an exact fit for compatible Siemens and Murray load centers. The MDA2200 features a plug-on mounting design, making it straightforward to replace aging or failed main disconnects without modifying the enclosure. Rated at 10 kAIC at 120/240V, it utilizes proven thermal-magnetic trip technology to protect against overloads and short circuits. It is commonly replaced by the QN2200.Specifications
| Brand | Siemens / Murray |
|---|---|
| Series | MDA |
| Amperage | 200A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | MP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Murray Load Centers, Siemens Load Centers |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| 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, Padlock Attachment |
|---|---|
| Accessories | Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker, Common Trip, HACR Rated |
Product FAQs
5 answersWhat is the modern Siemens replacement for the Murray MDA2200?
The Siemens QN2200 is the direct replacement for the obsolete Murray MDA2200. Siemens phased out the Murray brand in 2019 and issued cross-reference documentation authorizing Siemens QN breakers for use in legacy Murray load centers.
Can the Murray MDA2200 be installed in a Siemens load center?
Yes, the MDA2200 is compatible with both Murray and Siemens load centers that are designed to accept MD-A or QN frame main breakers.
What is the required torque specification for the MDA2200 lugs?
The main lugs for this 200A breaker require 250 lb-in of torque when using 4 AWG to 300 kcmil wire. Always verify the exact torque value printed on the breaker label prior to installation.
What does the LI trip function indicate on this breaker?
The LI code means the breaker features a thermal-magnetic trip unit providing Long-Time and Instantaneous protection. The long-time function handles sustained overloads, while the instantaneous function trips immediately during a short circuit.
Is a hold-down kit required when using the MDA2200 as a back-fed main?
Yes. If you are installing this breaker as a back-fed main rather than a standard plug-on main, the National Electrical Code requires a compatible hold-down retainer kit to secure the breaker to the panel bus.
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