Siemens QSH2150 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Plug-On
Quantity
Siemens QSH2150 - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Designed to handle heavier electrical loads, the Siemens QSH2150 is a 150A, 2-pole molded case circuit breaker. It is frequently utilized as a main breaker in multi-tenant residential and light commercial facilities. This unit installs into Siemens Power Mod systems, Uni-PAK metering centers, and WMM series enclosures. The plug-on design and side-wired lug terminals accommodate wire gauges up to 300 kcmil.Specifications
| Brand | Siemens |
|---|---|
| Series | QSH |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 42kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Power Mod Meter Stacks, Siemens Uni-PAK, Siemens WMM Series, Siemens Load Centers |
| 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 |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40°C |
| Construction Features | 42kA High Interrupting Rating, Side-Wired Design, HACR Rated |
Product FAQs
5 answersWhat enclosures are compatible with the QSH2150 circuit breaker?
This breaker is designed for use in Siemens Power Mod Meter Stacks, Uni-PAK metering, WMM Series, and compatible Siemens load centers. It is frequently utilized as a tenant main breaker in 225A meter sockets.
What is the recommended wire size and torque specification for the QSH2150 lugs?
The integrated lugs accept 3 AWG to 300 kcmil copper or aluminum conductors. The wire binding screws must be torqued to 500 lb-in for a secure and compliant connection.
Can a standard QP breaker be installed in a slot designed for the QSH2150?
Yes, a 125A or smaller QP breaker can be inserted into a 225A QS frame slot without the need for conversion kits or filler plates.
Can the QSH2150 be reverse fed for backfeed applications?
Siemens molded case circuit breakers can be reverse fed unless the terminals are specifically stamped with LINE and LOAD markings. Always inspect the physical breaker for these markings before using it in a back-fed application.
What is the difference between the Siemens QS2150 and QSH2150?
Both are 150A, 2-pole QS frame breakers with identical physical dimensions. The QSH2150 features a higher short-circuit interrupting rating than the standard QS2150, making it suitable for systems with higher available fault currents.
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