SIEMENS 3VA5112-4ED21-0AA0 Molded-Case Circuit Breaker

The SIEMENS 3VA5112-4ED21-0AA0 is a 2-pole molded-case circuit breaker designed for reliable line protection in electrical distribution systems. It features a 125 A rated operational current and a breaking capacity of up to 25 kA at 480 V, making it suitable for industrial and commercial applications requiring robust overload and short-circuit protection. This device is part of Siemens' SENTRON series, optimized for system protection and compatible with HVAC circuit breaker standards (HACR Type). It is an essential component for electrical distributors and switchgear suppliers focusing on safe and efficient power management.

Specifications

• Manufacturer Part #: 3VA5112-4ED21-0AA0
• Number of Poles: 2
• Rated Operational Current (at 40 ¬∞C): 125 A
• Breaking Capacity (UL 489, 480 V): 25 kA
• Breaking Capacity (IEC 60947, 240 V): 55 kA
• Breaking Capacity (IEC 60947, 415 V): 36 kA
• Short-Circuit Making Capacity (240 V): 121 kA
• Short-Circuit Making Capacity (415 V): 75.6 kA
• Insulation Voltage Rated Value: 500 V
• Operating Voltage Rated Value (AC): 415 V
• Operating Voltage Rated Value (DC): 250 V
• Mechanical Service Life: 20,000 operating cycles
• Electrical Endurance (AC-1, 380/415 V): 8,000 operating cycles
• Power Loss (Maximum): 20.06 W
• Dimensions (H x W x D): 140 mm x 50.8 mm x 76.5 mm
• Protection Class (Front): IP40
• Ambient Operating Temperature: -25 ¬∞C to 70 ¬∞C
• Product Weight: 665 g

Features

• System protection design with permanently set overload and short-circuit protection
• Complies with UL 489 for Heating, Air Conditioning, and Refrigeration circuit breaker (HACR Type)
• Adjustable response value settings for overload (Ir=125 A) and short-circuit protection (Ii=10 x In)
• No communication or measurement functions included, ensuring straightforward operation
• Compact and robust mechanical construction suitable for demanding electrical distribution environments
• Not upgradable for neutral conductor protection, designed for main current circuit without connection
• Certified to multiple international standards with general product approvals and test certificates for maritime applications

Downloads & Links

• Spec Sheet