EJB24040 - 40 Amp Circuit Breaker

EJB24040 - 40 Amp Circuit Breaker

The Schneider Electric EJB24040 is a heavy‑duty 40 Amp, 2‑pole circuit breaker designed to keep your electrical system safe, stable, and reliable. Engineered for lighting panelboards and low-voltage branch circuits operating at 480Y/277 VAC, it delivers a high 100 kA interrupting capacity to guard against overloads and short circuits. With its dependable E‑Frame configuration and bolt‑on mount design, this breaker offers a straightforward installation experience in NF panelboards — giving you dependable protection in both residential and commercial environments without fuss.

Key Features and Benefits

• High Interrupt Rating: Capable of interrupting up to 100 kA at 120 VAC (and 65 kA at 277 VAC), the EJB24040 dramatically reduces risk of catastrophic electrical faults, helping to safeguard equipment and personnel.
• Thermal‑Magnetic Trip Unit: Its built-in thermal‑magnetic trip mechanism responds accurately to overloads and short circuits, ensuring trips are prompt and reliable.
• Solid Construction for Longevity: Calibrated to perform at up to 40 °C, this breaker withstands demanding operating conditions and delivers long-lasting service.
• Bolt-On Mounting for Secure Fit: The bolt-on design ensures a firm, stable installation in NF panelboards, preventing loosening over time and ensuring ongoing reliability.
  

Technical Specifications

• Product Range: 125 A Frame EDB–EGB–EJB
  
• Product Type: Miniature Circuit Breaker (MCB)
  
• Device Short Name: EJB
  
• Frame Type: E‑Frame
  
• Line Rated Current: 40 A
  
• Number of Poles: 2 (2‑pole)
  
• Maximum Operating Voltage: 480Y/277 V AC
  
• Breaking Capacity:
  • 65 kA at 277 V AC
  • 100 kA at 240 V AC
  • 65 kA at 480Y/277 V AC
  • 100 kA at 120 V AC
  • 100 kA at 120/240 V AC
• Trip Unit Rating: 1800 A
  
• Mounting Mode: Bolt‑on for NF panelboards
  
• Dimensions:
  • Height: 5.66 in (143.76 mm)
  • Width: 1.96 in (49.78 mm)
  • Depth: 4.05 in (102.87 mm)
• Weight: 3 lb (1.36 kg)
  

Material Compliance and Certifications

• UL Listed: The EJB24040 meets UL standards, including High‑Intensity Discharge and HACR ratings, ensuring compliance with rigorous safety requirements.
• Green Premium™ Labeled: Reflects commitment to environmental responsibility, offering transparency on environmental performance and compliance with current standards.
• RoHS & REACH Compliant: Manufactured under strict regulations to minimize hazardous substances, making it a safer choice for end users and the environment.
  

Where It Works Best

• This EJB24040 circuit breaker is a strong match for low-voltage electrical circuits in residential, commercial, and light-industrial settings. It shines in lighting panelboards, branch-circuit distributions, and any installation where reliable protection against overload or short circuit is critical. Use it in NF panelboard setups for offices, retail spaces, apartment complexes, and small industrial facilities — anywhere dependable, code‑compliant circuit protection matters.