Siemens Circuit breaker, 2-pole, 10kA, 8A

Product Overview The Siemens 5SJ4208-7HG42 is a high-performance UL 489 listed miniature circuit breaker designed for North American electrical applications requiring reliable branch circuit protection. This 2-pole device features an 8A current rating with 480Y/277V AC operational voltage and 10kA breaking capacity, incorporating C-curve trip characteristics optimized for general-purpose circuits. The UL 489 certification ensures compliance with North American electrical standards for branch circuit protection and feeder applications, making it ideal for commercial, industrial, and HVAC applications requiring dependable overcurrent protection.

Key Features

• UL 489 Listed: Certified for North American branch circuit protection and feeder applications
• 8A Current Rating: Optimal for light to medium-current 2-pole applications
• High Breaking Capacity: 10kA short-circuit breaking capacity for robust fault protection
• C-Curve Trip Characteristic: Balanced protection for general circuits with moderate inrush loads (5-10 In trip range)
• North American Voltage Rating: 480Y/277V AC and 60V/125V DC operational capability
• 2-Pole Configuration: Comprehensive protection for single-phase systems with line and neutral monitoring
• DIN Rail Mounting: Standard DIN rail installation for easy integration
• Thermal Magnetic Trip: Reliable protection against overload and short circuit conditions

Technical Specifications

• Current Rating: 8A
• Operating Voltage: 480Y/277V AC, 60V/125V DC
• Breaking Capacity: 10kA
• Number of Poles: 2-pole
• Trip Curve: C (5-10 In)
• Frequency: 60 Hz
• Standards Compliance: UL 489, CSA 22.2 No. 5.02
• Mounting: DIN Rail
• Net Weight: 0.335 kg
• Operating Temperature: -25°C to +40°C (optimized for 25°C and 40°C applications)
• Country of Origin: Germany
• EAN: 4001869383781

Applications This UL 489 listed 2-pole C-curve circuit breaker is particularly suitable for:

• Branch circuit protection in commercial and industrial installations
• HVAC system protection and control applications
• Control cabinet and distribution block protection
• Motor control center applications requiring UL 508A compliance
• Feeder circuit protection in North American electrical systems
• Industrial control system protection to UL standards
• Commercial lighting and power distribution circuits
• Building automation system protection
• Process control and instrumentation circuits
• Equipment protection in manufacturing facilities

Advanced Design Features

• UL 489 Compliance: Designed specifically for North American electrical codes and standards
• Dual Voltage Capability: AC and DC voltage compatibility for versatile applications
• Canadian Standards Certified: CSA 22.2 No. 5.02 certification for Canadian installations
• Thermal Magnetic Protection: Combined thermal and magnetic trip for comprehensive protection
• HVAC Application Approved: Specifically approved for heating, ventilating, and cooling systems
• Temperature Optimized: Tripping characteristics adapted for 25°C and 40°C ambient conditions

North American Market Benefits

• Code Compliance: Meets UL 489 requirements for branch circuit protection
• HVAC Compatibility: Approved for heating, ventilating, and cooling system applications
• Control System Integration: Suitable for UL 508A compliant control panel applications
• Dual Country Certification: UL listed and CSA certified for US and Canadian markets
• Industrial Reliability: Designed for demanding North American industrial applications

Compliance & Certifications

• Standards Compliance: UL 489, CSA 22.2 No. 5.02
• UL Listed: File E2434140 for branch circuit protection applications
• RoHS Compliance: Compliant since July 1, 2008
• WEEE Directive: Subject to take-back obligations under directive 2012/19/EU
• REACH Regulation: Currently no SVHC substances identified above 0.1% w/w threshold
• Export Control: AL: N / ECCN: N
• Product Class: C - Manufactured to order, non-cancelable, non-returnable

Product Classification

• eClass: 27-14-19-01 (versions 6-14)
• ETIM: EC000042 (versions 7-9)
• UNSPSC: 39-12-16-03
• Product Group: 5507

Download existing graphical data for this product:

• Product Datasheet
• Installation Manual
• SENTRON Product Catalog
• Technical Documentation