HEB1B050B - 50Amp Circuit Breaker

HEB1B050B - 50Amp Circuit Breaker

Finding the correct replacement for your breaker starts with matching the details that matter — frame type, amperage, voltage rating, and terminal configuration. The Siemens HEB1B050B is a 50 Amp, 1-pole molded case circuit breaker made for compatible HEB (EG) frame low-voltage panelboards. It uses a thermal-magnetic trip unit to help protect your circuits from overloads and short circuits while keeping the original equipment specifications intact.

Key Features and Benefits

• Siemens HEB (EG) frame molded case circuit breaker
• 50 Amp current rating
• Single-pole configuration
• Thermal-magnetic trip protection
• Rated for 277 VAC applications
• Interrupting ratings:
  • 65kAIC @ 277 VAC
  • 25kAIC @ 347 VAC
• Load-side lugs included (TA1EG10)
• Accepts 8 AWG to 1/0 AWG copper or aluminum conductors
• Form, fit, and functional replacement for compatible HEB frame installations
• UL Listed
• Built to last for continued use in existing electrical systems

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HEB1B050B
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: HEB (EG Frame)
  
• Poles: 1
  
• Current Rating: 50 Amps
  
• Voltage Rating: 277 VAC
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Rating: 65kAIC @ 277 VAC; 25kAIC @ 347 VAC
  
• Terminal Type: Load-side lugs (TA1EG10)
  
• Wire Range: 8 AWG to 1/0 AWG Copper/Aluminum
  
• Dimensions: 1 in. W × 5.5 in. H × 3 in. D
  
• Weight: 1.257 lb
  
• Country of Origin: Dominican Republic
  

Material Compliance and Certifications

• UL Listed
• Compatible with copper and aluminum conductors
• ECCN: EAR99
• Commodity Code: 8536200040
• WEEE Category 5
• Not classified as dangerous goods
• RoHS compliance information not available
  

Where It Works Best

The Siemens HEB1B050B is commonly used in commercial buildings, industrial facilities, and institutional electrical distribution systems that rely on compatible HEB (EG) frame panelboards. It fits maintenance and replacement applications where matching the existing breaker specifications is the priority.