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A1B120 - 20 Amp Circuit Breaker

  • 20 Amp
  • 10k @ 120VAC
  • 1 Pole
Circuit BreakersSKU: A1B120 [NS]

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A1B120 - 20 Amp Circuit Breaker Description

A1B120 - 20 Amp Circuit Breaker

Keep your electrical systems safe and functioning smoothly with the A1B120 circuit breaker — a dependable solution for branch‑circuit protection in homes, offices, retail spaces, and light industrial environments. Engineered for high‑performance interruption and clear, reliable safety, this breaker ensures your wiring and equipment stay protected from overloads and short circuits. Its 120 VAC rating and 10,000 AIC interruption capability deliver serious protection where you need it, while its compact, bolt‑on form factor makes installation straightforward and quick. Built to meet rigorous safety standards, the A1B120 offers lasting, trouble‑free service — giving you peace of mind that your circuits are in good hands.

Key Features and Benefits

  • High Interruption Capacity: With a 10,000 AIC rating at 120 VAC, this breaker is designed to safely interrupt fault currents, safeguarding wiring and downstream equipment from damage.
  • Thermal & Magnetic Protection: The built‑in thermal magnetic mechanism delivers dual protection: thermal trip for overloads and magnetic trip for short circuits, providing balanced defense against electrical faults.
  • Easy Bolt‑On Installation: The bolt‑on design simplifies installation and ensures a secure connection, helping reduce labor time and making retrofits or new builds more efficient.
  • Versatile Use Cases: Whether you’re wiring a residence, outfitting an office, or maintaining a light industrial facility, the A1B120 adapts easily to different settings and circuit protection needs.

Technical Specifications

  • Amperage: 20 Amps
  • Voltage Rating: 120 VAC
  • AIC Rating: 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: Meets strict safety and performance standards to ensure reliability and compliance for residential, commercial, and light industrial installations.
  • RoHS Compliant: Free from hazardous substances — making it a safer, more environmentally responsible choice for conscious buyers.

Where It Works Best

  • The A1B120 is a strong fit for branch-circuit protection in a variety of settings — from new residential builds to office spaces and retail outlets, to light industrial environments where compact size and dependable protection matter. When you need a reliable, easy-to-install circuit breaker that handles everyday loads and fault conditions with confidence, this model stands out as an innovative, flexible, and safe choice.

 


Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. All trademarks and registered trademarks are the property of their respective owners.

Specifications

  • Width:0.75
  • Height:6.0
  • Depth:2.31
  • Poles:1
  • Amperes:20
  • A.I.C. Rating & Volts:10k @ 120VAC
  • Type:A1B
  • Approx Dimensions:0.75"W x 6.00"L x 2.31"D
  • Additional Notes:Bolt-on, Thermal Magnetic Circuit Breaker

Returns are easy

You may return unused items within 30 days of delivery for a full refund.

FREE shipping on breaker orders over $100 and all other items with orders over $500.

CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).

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