NC040 - 40Amp Circuit Breaker

NC040 - 40Amp Circuit Breaker

The NC040 40 Amp Circuit Breaker is a compact, single-pole thermal magnetic breaker designed to deliver dependable circuit protection in residential and light commercial electrical systems. Rated at 40 amps with a 10kA interrupting capacity at 120VAC, this breaker helps protect wiring and connected equipment from overloads and short circuits that can cause costly damage or downtime. Its space-saving NC frame and stab-on connection make it a practical solution for maintenance replacements and panel upgrades where reliability and fit matter. Built for consistent performance, the NC040 offers the protection electricians and facility managers expect in everyday applications.

Key Features and Benefits

• 40 Amp Single-Pole Protection – Designed to handle 40A loads while safeguarding branch circuits from overload and short-circuit conditions.
• Thermal Magnetic Trip Mechanism – Provides accurate response to both prolonged overcurrent and instantaneous fault conditions.
• 10kA @ 120VAC Interrupting Rating – Suitable for standard residential and light commercial fault levels.
• Compact NC Frame Design – Helps maximize available panel space, ideal for tight enclosures.
• Stab-On Connection – Enables straightforward installation and efficient maintenance replacements.
• Durable Construction – Manufactured with quality materials to support long-term, consistent operation.

Technical Specifications

• Manufacturer Part Number: NC040
  
• Poles: 1
  
• Amperage Rating: 40A
  
• Voltage Rating: 120VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 120VAC
  
• Frame Type: NC
  
• Connection Type: Stab-On
  
• Trip Mechanism: Thermal Magnetic
  
• Dimensions: 0.50" W x 3.38" L x 2.31" D
  
• Approximate Ship Weight: 1.50 lbs
  

Material Compliance and Certifications

• The NC040 40A circuit breaker is manufactured in accordance with recognized industry standards for electrical safety and performance. Built using high-quality components, it is designed to meet applicable material compliance requirements and deliver reliable protection within approved operating parameters. Always confirm compatibility with your specific panel and local electrical codes prior to installation.

Where It Works Best

• The NC040 single-pole 40 amp breaker is well suited for maintenance replacements, panel upgrades, and service work in residential and light commercial environments. It performs reliably in branch circuit applications where 120V power distribution is required, especially in panels with limited available space. Whether you’re replacing a worn breaker or restoring a system to safe operating condition, the NC040 provides dependable circuit protection you can count on.