Overview
The Siemens QS2150 is a 150 A, two-pole Type QS main circuit breaker for 120/240 V AC single-phase systems. Its plug-in construction provides a 10 kA interrupting rating for compatible Siemens meter centers, load centers, and distribution equipment.
Key Features
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Safety: Molded-case thermal-magnetic protection responds to overload and short-circuit conditions and is certified to UL 489.
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Installation: Type QS plug-in construction uses side-wired box-lug terminals in compatible Siemens equipment.
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Compatibility: Terminals accept conductors from 3 AWG through 300 kcmil; use only where the equipment label permits the QS2150.
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Performance: Rated 150 A, 2 poles, 120/240 V AC, 10 kA interrupting capacity, and calibrated at 40°C.
Specifications
- Manufacturer part number: QS2150
- Series / frame: QS / QS
- Current rating: 150 A
- Poles / phase: 2 poles / 1 phase
- Voltage rating: 120/240 V AC
- Interrupting rating: 10 kA
- Protection: thermal-magnetic molded-case breaker
- Mounting: plug-in
- Terminal connection: side-wired box lugs
- Wire range: 3 AWG–300 kcmil
- Temperature calibration: 104°F (40°C)
- Certification: UL 489
Common Applications
- 150 A main overcurrent protection in compatible Siemens meter centers and load centers.
- Residential and light-commercial 120/240 V single-phase services.
- Feeder or service equipment requiring large-conductor side-wired box lugs.
- Replacement applications where Siemens QS2150 is specified by the equipment documentation.
