HQR22B100 - 100Amp Circuit Breaker

HQR22B100 - 100 Amp Circuit Breaker

The HQR22B100 is a dependable 2-pole, 100 amp molded-case circuit breaker built to safeguard your 120/240 VAC electrical systems from overloads and short circuits. With a 65 kA interrupting capacity at 240 V, it provides strong fault protection while maintaining a compact footprint—standing about 7″ high and weighing ~3 lb—so it fits neatly into standard panels without hogging space. Designed with the HQR2 (QR series) frame, this breaker offers both performance and versatility, making it suitable for residential, light commercial, or HVAC applications where space, safety, and reliability matter.

Key Features and Benefits

• Dual protection (thermal + magnetic): Combines overload and short-circuit defense, giving you peace of mind that your circuits stay secure.
• High interrupting rating (65 kA @ 240 V): Handles significant fault currents without failing, ideal for modern power systems.
• Compact size, easy fit: At ~7″ tall and ~3 lb, it’s easy to mount in most breaker panels without crowding your layout.
• Load-side lugs for fast wiring: Makes installation quicker and neater — ideal for retrofits or upgrades.
• Frame strength with molded case: Offers protection against wear and environmental stress, helping the breaker last longer under tough conditions.
• HACR rated & 40 °C ambient: Compatible with heating and air-conditioning systems, and tuned for standard ambient temperature environments.

Technical Specifications

• Part Number: HQR22B100
  
• Poles: 2
  
• Nominal Amperage: 100 A
  
• Voltage Rating: 120/240 VAC
  
• Interrupting Capacity: 65 kA @ 240 V
  
• Frame / Series: HQR2 / QR series
  
• Operating Ambient: 40 °C standard
  
• Weight: ~3 lb
  
• Dimensions:
  • Height: ~7″ (≈ 7.08″)
  • Width: ~3″
  • Depth: ~2.53″
• Connection Style: Load-side lugs / bolt-on (depending on setup)
  
• Temperature Rating: 40 °C
  
• Standards: UL/NEC compliance (molded-case breaker standards)
  

Material Compliance and Certifications

• Compliance: This breaker is manufactured under standards that align with UL and NEC requirements, ensuring safe operation in demanding electrical environments.
• Durability: Its molded case shields internal components from mechanical stress and external contaminants.
• HACR Rating: The HACR (Heating, Air Conditioning, Refrigeration) rating qualifies it for systems tied to HVAC loads.
• Quality: Certifications are backed by Siemens’ quality control protocols.

Where It Works Best

• Residential main or sub-panels: When you need a 100 A, 2-pole solution without oversizing your panel layout.
• Light commercial spaces / small offices: Reliable protection for modest loads without adding excessive bulk.
• HVAC / heating equipment circuits: With HACR rating, it’s suitable for protecting compressor circuits, blower motors, and ancillary systems.
• Upgrades & replacements: Ideal for modernizing older panels or replacing failed breakers of the same spec.
• Panelboards, control panels, and switchgear setups: Its high interrupting rating and solid frame make it a good match for distribution systems with variable loads.