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Siemens QS2150 Miniature Circuit Breaker
- 150A
- 2 Pole
- Plug-On
Siemens
QS2150
Miniature Circuit Breaker
Brand
Siemens
SKU
QS2150
Quantity
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Siemens QS2150 - 150A 2 Pole Miniature Circuit Breaker
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Description
Built for multi-family residential and commercial metering, the Siemens QS2150 provides 150A of two-pole circuit protection. It utilizes a thermal-magnetic trip mechanism to deliver dependable long-time and instantaneous overcurrent protection. This plug-on breaker installs into Siemens Power Mod meter stacks and Uni-PAK metering enclosures. It also serves as an exact substitute for the legacy MPD2150. The side-wired, right-hand bend design saves wiring space and speeds up installation.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QS2150 |
| Series | QS |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Power Mod Meter Stacks, Uni-PAK Metering |
| Wire Gauge | 3 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 3 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Main Breaker |
Product FAQs
6 answersWhat metering equipment is compatible with the QS2150?
This plug-on main breaker is specifically designed for installation in Siemens Power Mod meter stacks and Uni-PAK multi-family metering enclosures.
Can the QS2150 replace older legacy breakers in Siemens metering?
Yes, the QS2150 serves as an exact, direct substitute for the legacy MPD2150 circuit breaker.
Are there alternative QS frame breakers with higher interrupting ratings?
Yes. The standard QS2150 is rated at 10kAIC. For applications requiring higher fault current ratings, Siemens offers the QS2150H (22kAIC), QSH2150 (42kAIC), QS2150HH (65kAIC), and HQS2150H (100kAIC).
How does the side-wired design of the QS2150 benefit installation?
The exclusive right-hand bend, side-wired design saves wiring space within the meter stack and eliminates the need for difficult wire bends when terminating large conductors.
Is utility approval required before installing this breaker in a metering enclosure?
Yes, all meter sockets and associated tenant main breakers must be approved by your local utility provider prior to purchase and installation.
What safety procedures are required when installing this main breaker?
Always de-energize the entire meter stack or Uni-PAK enclosure before installing or servicing the breaker. Use a properly rated voltage meter to confirm power is disconnected, and ensure all work complies with the National Electrical Code and local utility requirements.
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