QS2100 - 100Amp Circuit Breaker

QS2100 - 100Amp Circuit Breaker

Replacing a main circuit breaker isn't something you want to leave to guesswork. The amperage needs to match, the voltage rating matters, and the breaker must be approved for the equipment you're working on. The Siemens QS2100 100 Amp 2-Pole Circuit Breaker is designed for electrical distribution applications that specifically require a Type QS breaker. With a 100-amp current rating, 120/240V AC voltage rating, and 10kA interrupting capacity, it provides the circuit protection specified for compatible Siemens load center and meter-load center equipment.

Key Features and Benefits

• 100-Amp Circuit Protection: Designed for compatible electrical distribution equipment requiring a 100-amp breaker.
• Two-Pole Configuration: Provides common circuit protection across two poles for applications designed to use this arrangement.
• 120/240V AC Rating: Suitable for electrical systems that specify this voltage rating and the QS2100 breaker configuration.
• Thermal-Magnetic Protection: Responds to sustained overloads and short-circuit conditions through separate thermal and magnetic operating principles.
• Siemens Type QS Design: Intended for compatible Siemens electrical distribution equipment that specifically accepts Type QS breakers.

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: QS2100
  
• Manufacturer Article Number: US2
  
• Manufacturer Part Number (MFN): QS2100
  
• Product Type: Main Circuit Breaker
  
• Breaker Family: Type QS
  
• Product Family: Meter Load Center Combo Mains
  
• Application: Electrical Distribution
  
• Amperage Rating: 100 Amps
  
• Number of Poles: 2
  
• Voltage Rating: 120/240V AC
  
• Interrupting Capacity (A.I.C.): 10kA
  
• Trip Mechanism: Thermal-Magnetic
  
• Applicable Standard: UL 489
  
• Net Weight: Approximately 2.205 lbs.
  
• UPC: 783087935204
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The manufacturer identifies the Siemens QS2100 as a circuit breaker designed to meet UL 489, the safety standard covering molded-case circuit breakers and related equipment. This is an important consideration when maintaining electrical systems that require breakers evaluated to an established safety standard.

The following manufacturer information is available:

• Safety Standard: UL 489
• RoHS Compliance: Manufacturer data does not specify a compliance status.
• REACH Information: Refer to the manufacturer's applicable substance disclosure documentation.

Where It Works Best

• Replacing an Existing Siemens QS2100: A suitable like-for-like replacement when the original breaker and equipment documentation specify catalog number QS2100.
  
• Compatible Siemens Load Centers: For approved load center configurations that specifically accept Type QS main breakers.
  
• Meter-Load Center Combinations: Designed for applicable Siemens meter-load center equipment that identifies the QS2100 as an approved breaker.
  
• 100-Amp Electrical Distribution Applications: Where the equipment requires a 100-amp, two-pole breaker with the stated voltage and interrupting ratings.
  
• Legacy Electrical System Maintenance: Useful when preserving the original protective arrangement of existing electrical equipment.
  
• Main Breaker Replacement Projects: For restoring the specified circuit protection in compatible equipment without changing its approved design.