B2100H - 100Amp Circuit Breaker

B2100H - 100Amp Circuit Breaker

The Siemens B2100H 100A circuit breaker is the kind of component you install when you want electrical protection to just do its job—quietly, consistently, and without surprises. Designed for 120/240V electrical distribution systems, this 2-pole BLH breaker is built to handle everyday loads while also stepping up when fault conditions happen.

In real use, it’s protecting wiring, equipment, and downstream circuits from overloads and short circuits using a thermal-magnetic trip system. That means it reacts in two ways—slow and steady for overloads, and fast for short-circuit events. It’s a simple concept, but it’s what keeps electrical systems safe and stable.

With a 22kA interrupt rating, the B2100H is ready for demanding conditions found in residential panels, commercial buildings, and light industrial setups. It’s a bolt-on design, so once it’s installed in a compatible Siemens panelboard, it locks in securely and stays put. No loose fit, no guesswork—just solid electrical contact and reliable performance over time.

Key Features & Benefits

• Rated 100A, 2-pole, 120/240V AC for common distribution systems
• 22kA interrupt capacity for dependable fault protection
• Thermal-magnetic trip helps handle both overloads and short circuits
• Bolt-on design ensures a tight, secure panelboard connection
• Compact BLH frame saves space inside electrical panels
• Built for steady performance in residential and commercial systems

Technical Specifications

• Manufacturer: Siemens
  
• Part Number: B2100H
  
• Series: BLH
  
• Type: Molded Case Circuit Breaker
  
• Amperage: 100A
  
• Poles: 2-Pole
  
• Voltage Rating: 120/240V AC
  
• Interrupting Rating: 22 kAIC
  
• Trip Type: Thermal-Magnetic
  
• Mounting: Bolt-On
  
• Dimensions (H × W × D): 2 in × 3 in × 4 in
  
• Weight: 0.639 lb
  
• Application: Electrical Distribution

Material Compliance and Certifications

• The B2100H is UL 489 listed, meeting recognized safety standards for molded case circuit breakers used in electrical distribution systems.

Where It Works Best

• The Siemens B2100H 100A breaker fits right into residential panelboards, commercial electrical systems, HVAC power feeds, lighting distribution panels, and light industrial control setups.