HNX3V120L - 1200Amp Circuit Breaker

HNX3V120L - 1200Amp Circuit Breaker

The Siemens HNX3V120L is a 3-pole, 1200-amp thermal-magnetic circuit breaker designed for use in your electrical distribution systems that require dependable overcurrent and short-circuit protection. Built on the Type HNX3/Type HNG Frame NG platform, this circuit breaker is engineered to provide the proper form, fit, and function for compatible equipment while helping you protect conductors and connected electrical components from overloads and fault conditions. Rated for 50/60 Hz operation and classified as HACR Type, the HNX3V120L is well suited for commercial and industrial applications where maintaining compatibility with existing power distribution equipment is essential. Constructed to last, this breaker combines proven thermal magnetic trip technology with high interrupting ratings, making it an appropriate choice for maintaining or servicing compatible legacy electrical systems.

Key Features and Benefits

• Siemens HNX3V120L thermal magnetic circuit breaker
• 1200 amp current rating for high-capacity power distribution applications
• 3-pole configuration for three-phase electrical systems
• 65kA interrupting rating at 480VAC
• 100kA interrupting rating at 240VAC
• Type HNX3 / Type HNG, Frame NG design for compatibility with corresponding equipment
• Thermal magnetic trip mechanism protects against overloads and short circuits
• Rated for 50/60 Hz electrical systems
• HACR Type classification for compatible heating, air conditioning, and refrigeration applications
• Built to last for long-term service in properly maintained electrical systems
  

Technical Specifications

• Manufacturer: Siemens
  
• Part Number: HNX3V120L
  
• Type: HNX3
  
• Frame: NG
  
• Breaker Type: Thermal Magnetic Circuit Breaker
  
• Poles: 3
  
• Current Rating: 1200 Amps
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 65kA @ 480VAC; 100kA @ 240VAC
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 16.0 in.
  • Width: 7.5 in.
  • Depth: 4.75 in.

Material Compliance and Certifications

• HACR Type Rated: HACR Type rated
• Electrical System: Designed for 50/60 Hz AC electrical systems
• Manufacturer Specifications: Manufactured to meet Siemens specifications for the Type HNG, Frame NG product family
• Installation: Intended for installation and use in compatible equipment in accordance with applicable electrical codes and manufacturer recommendations.
  

Where It Works Best

• The Siemens HNX3V120L is commonly used in commercial buildings, industrial facilities, manufacturing operations, institutional properties, and other large electrical distribution systems that require a 1200-amp, 3-pole thermal magnetic circuit breaker. It is well suited for maintenance, repair, and replacement projects where matching the original breaker's frame, ratings, and configuration is important for continued compatibility with existing equipment. Its HACR classification also makes it suitable for compatible heating, ventilation, air conditioning, and refrigeration applications that require the specified electrical ratings.