Leviton LB120-AST Circuit Breaker

Product Overview

The Leviton LB120-AST is a single-pole, 20A thermal-magnetic circuit breaker with SMART AFCI functionality and a 10 kA interrupting rating.

This listing reflects the LB120-AST model and the specifications provided for that SKU.

Key Features

• Single-pole (1P) thermal-magnetic breaker
• 20 amp rating
• SMART AFCI (arc-fault circuit interrupter) functionality
• 10 kA interrupting rating
• UPC: 07847718813
• Unit weight: 5.8 lb

Function and Protection

The LB120-AST combines a thermal-magnetic trip mechanism for overload and short-circuit protection with SMART AFCI functionality for arc-fault detection, as indicated in the product description.

• Thermal-magnetic trip for overload and short-circuit protection
• Built-in SMART AFCI for arc-fault detection

Electrical Ratings and Capacity

This SKU is specified as a single-pole breaker rated at 20 amps with a 10 kA interrupting rating. These ratings are taken from the provided product information.

• Poles: 1 (single-pole)
• Ampere rating: 20 A
• Interrupting rating: 10 kA

Typical Uses

The product description lists residential, commercial, and industrial electrical applications; the breaker is presented as suitable for branch-circuit protection where an AFCI-capable single‑pole breaker is required. This listing does not replace site- or code-specific guidance.

• Branch-circuit protection where arc-fault detection is required or desired
• Applications referenced by the product description include residential and commercial settings

Panel Compatibility

The listing identifies the model and its electrical ratings but does not provide a comprehensive list of compatible panel manufacturers or chassis types. Verify physical fit and manufacturer compatibility with your panel prior to purchase.

• Confirm panel manufacturer and chassis/type before installation
• Check that a single-pole breaker fits the available space in the load center

Before You Order

Confirm the LB120-AST model number and required quantity before ordering. This listing provides the SKU and its stated electrical ratings but does not list panel compatibility.

• Verify panel manufacturer and chassis/type for physical and electrical compatibility
• If uncertain, consult a qualified electrician for selection and installation

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Leviton LB120-AST Circuit Breaker. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.