Siemens QS2150H Miniature Circuit Breaker
- 150A
- 2 Pole
- Plug-On
Siemens
QS2150H
Miniature Circuit Breaker
Brand
Siemens
SKU
QS2150H
Quantity
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Siemens QS2150H - 150A 2 Pole Miniature Circuit Breaker
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Description
Part of the QS frame family, the Siemens QS2150H operates as a 150A, two-pole miniature circuit breaker for multi-tenant applications. It delivers reliable thermal-magnetic protection for residential and commercial electrical systems. This unit mounts into Siemens Power Mod meter stacks and Uni-PAK metering. It serves as an exact replacement for MPD2150KH and MDH150 breakers. Rated at 22kAIC, it offers high interrupting capacity and features a side-wired design requiring no filler plates.Specifications
| Brand | Siemens |
|---|---|
| Series | QS |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 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, High Interrupting Capacity |
Product FAQs
6 answersWhat is the difference between the Siemens QS2150 and QS2150H?
The "H" in the QS2150H catalog number indicates a higher interrupting rating. The standard QS2150 is rated at 10 kAIC, while the QS2150H is rated at 22 kAIC at 120/240V AC.
What applications is the QS2150H circuit breaker designed for?
This breaker is primarily used as a tenant main circuit breaker in Siemens Power Mod meter stacks, WMM and PAK multifamily metering lines, and Uni-PAK metering enclosures.
Can the QS2150H be installed in a standard Siemens residential load center?
No. The QS2150H is a specialized QS frame breaker designed specifically for Siemens multi-family metering equipment. It is not compatible with standard EQIII, PL, or ES series residential load centers, which typically require QP or QPH branch breakers.
How does the side-wired design of the QS2150H benefit installation?
The exclusive side-wired lug configuration on QS frame breakers saves wiring space inside the meter stack and eliminates the need to bend large conductors into difficult S-shapes. The lugs accept 3 AWG to 300 kcmil copper or aluminum wire.
Are there higher interrupting capacity versions of this 150A QS breaker available?
Yes. If your electrical system requires a higher short-circuit rating than the 22 kAIC provided by the QS2150H, Siemens offers the QSH2150 (42 kAIC), QS2150HH (65 kAIC), and HQS2150H (100 kAIC) in the exact same 150-amp QS frame footprint.
What older tenant main breakers can the QS2150H replace?
The QS2150H serves as an exact, direct replacement for older Siemens and Murray tenant main breakers, specifically the MPD2150KH and MDH150 models used in legacy metering equipment.
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