A1B120 - 20 Amp Circuit Breaker

A1B120 20 Amp Circuit Breaker

The A1B120 20 Amp Circuit Breaker is a dependable choice for protecting branch circuits in residential, commercial, and light industrial electrical panels. Designed to match form, fit, and function for replacement applications, it helps prevent overloads and short circuits by interrupting fault currents at a 120 VAC rating. With a 10,000 AIC interruption capacity and a thermal-magnetic trip mechanism, this breaker offers clear, predictable operation that installers and electricians trust for everyday circuit protection. Its compact, bolt-on format makes installation straightforward, whether you’re servicing existing wiring or completing a new build. Built to last and compliant with recognized safety standards, the A1B120 provides circuit protection that aligns with your system requirements.

Key Features and Benefits

• 10,000 AIC Rating at 120 VAC: Designed to interrupt fault currents safely within its rated limits, helping protect downstream wiring and equipment from damage due to overloads or short circuits.
• Thermal & Magnetic Protection: Combines a thermal element for overload protection with a magnetic trip for short-circuit response, helping maintain circuit integrity under different electrical conditions.
• Bolt-On Installation: The secure bolt-on design simplifies mounting and ensures a solid connection in compatible panelboards, saving labor time and reducing installation complexity.
• Straightforward Compatibility: Works in many panels requiring A1B frame breakers; ideal for maintenance, replacement, and retrofit projects where matching existing breaker type and ratings is essential.

Technical Specifications

• Amperage: 20 Amps
  
• Voltage Rating: 120 VAC
  
• AIC (Interrupting Capacity): 10,000 AIC
  
• Poles: 1
  
• Frame Type: A1B
  
• Dimensions:
  • Width: 0.75 inches
  • Length: 6.00 inches
  • Depth: 2.31 inches
• Weight: 2.10 lbs
  

Material Compliance and Certifications

• UL Listed: Tested and listed to meet established safety standards for residential, commercial, and light industrial use.
• RoHS Compliant: Manufactured without certain hazardous substances, supporting safer disposal and reduced environmental impact.

Where It Works Best

• The A1B120 circuit breaker is suitable for branch-circuit protection in a wide range of settings, from single-family homes and apartment units to offices, retail spaces, and light industrial environments. It’s a good match for legacy panelboards and systems where maintaining consistent circuit protection ratings is important, and for any electrical setup that calls for a bolt-on 20-amp, 120-VAC breaker with a 10,000 AIC capacity. Whether you’re replacing a matching breaker or stocking parts for electrical service calls, this model fits well where standard circuit protection is required.