Siemens MPD2150R Molded Case Circuit Breaker
- 150A
- 2 Pole
- Plug-On
Quantity
Siemens MPD2150R - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Tailored for specialized panel configurations, this 150-amp main breaker features a reverse handle design where the ON position faces the lugs. This two-pole component serves as the primary service disconnect for residential applications. The plug-on unit mounts securely into compatible Siemens and Murray load centers that demand a reverse-operating main. It replaces the legacy QN2150R to simplify maintenance. Delivering a standard 10kAIC rating, it utilizes proven thermal-magnetic technology.Specifications
| Brand | Siemens |
|---|---|
| Series | MPD |
| Amperage | 150A |
| 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 | Siemens Load Centers, Murray 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 Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment, Shunt Trip |
|---|---|
| Accessories | Reverse Handle (ON towards lugs) |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Main Breaker |
Product FAQs
6 answersWhich load centers are compatible with the MPD2150R main breaker?
This 150A breaker is designed for installation in Siemens and Murray load centers that require a reverse-operating main breaker.
What does the reverse handle design on the MPD2150R mean for installation?
The reverse handle configuration means the ON position faces the lugs. This is specifically required for certain panelboard designs where the main breaker mounts in a reverse orientation.
Which legacy circuit breakers can the MPD2150R replace?
This breaker serves as a direct replacement for legacy QN2150R and Crouse-Hinds MD150H main breakers in compatible panels.
What wire sizes are accepted by the lugs on this breaker?
The terminal lugs are rated to accept 4 AWG to 300 kcmil copper or aluminum conductors. Ensure proper torque specifications are followed during installation.
What type of protection does the thermal-magnetic trip unit provide?
The fixed thermal-magnetic mechanism provides long-time response for overload conditions and an instantaneous trip function for short-circuit protection.
How does the MPD2150R connect to the panel bus?
It utilizes a plug-in connection, allowing the breaker to snap directly onto the bus bars of compatible Siemens or Murray load centers without the need for bolt-on hardware.
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