5SJ4118-7HG40 - C-Curve, 1P 15A DIN Rail Circuit Breaker

5SJ4118-7HG40 -  C-Curve, 1P 15A DIN Rail Circuit Breaker

If you’re looking for a circuit breaker that simply does its job—every time—the Siemens 5SJ4118-7HG40 is exactly what belongs in your panel. Built for 240V applications and rated at 15 amps, this 1-pole miniature circuit breaker is engineered to protect your electrical system from overloads and short circuits before they turn into costly problems. What makes it stand out is its 14kA interrupting capacity, giving you confidence that even high fault currents are handled quickly and safely. This model features a C-curve trip characteristic, which means it’s perfectly suited for circuits with moderate inrush currents—think motors, HVAC equipment, and lighting systems. Instead of nuisance tripping, you get smooth, reliable operation where it matters most. And thanks to its compact 70 mm depth, it fits neatly into tight panel spaces without making installation a hassle. In short, this is the kind of breaker professionals reach for when they want dependable protection, consistent performance, and a name they trust backing it up.

Key Features and Benefits

• Reliable 15A Circuit Protection: Helps prevent overloads and short circuits in everyday applications
• 14kA Interrupting Rating: Handles high fault currents with confidence and speed
• C-Curve Trip Function: Ideal for motor loads, HVAC systems, and equipment with startup surges
• UL 489 Listed: Meets strict safety and performance standards for peace of mind
• Space-Saving Design: Compact 70 mm depth makes panel installation easier
• Proven Siemens Quality: Designed for long-lasting, consistent operation

Technical Specifications

• Catalog Number: 5SJ4118-7HG40
  
• Voltage Rating: 240V
  
• Amperage: 15A
  
• Poles: 1
  
• Interrupting Capacity: 14kA
  
• Trip Curve: C Curve
  
• Mounting Depth: 70 mm
  
• Standard: UL 489
  
• Polarity: Equal polarity
  

Material Compliance and Certifications

• UL 489 Certified: Tested and approved for safety in North American electrical systems
• Manufactured to Industry Standards: Built with quality materials for consistent electrical performance
• Code-Compliant Design: Suitable for use in commercial and industrial installations

Where It Works Best

• You’ll find the Siemens 5SJ4118-7HG40 right at home in:
• Commercial electrical panels
• Industrial control systems
• HVAC and motor-driven equipment
• Lighting circuits with moderate startup loads
• OEM machinery and equipment builds