HEB1B025B - 25Amp Circuit Breaker

HEB1B025B - 25Amp Circuit Breaker

When a panelboard requires the correct replacement breaker, compatibility matters just as much as the electrical rating. The Siemens HEB1B025B is a 25 Amp, single-pole molded case circuit breaker built for use with compatible HEB (EG) frame panelboards. It uses a thermal-magnetic trip mechanism to protect electrical circuits from overloads and short circuits, helping keep connected equipment operating as intended. With a 277 VAC rating and an interrupting capacity of 65kA at 277 VAC (25kAIC at 347 VAC), this breaker is suited for many commercial and industrial power distribution systems where those ratings are required.

If you're maintaining or repairing a compatible electrical system, the HEB1B025B is intended to match the original form, fit, and function so the equipment can continue operating as designed.

Key Features and Benefits

• Siemens HEB (EG) frame molded case circuit breaker
• 25 Amp current rating
• Single-pole configuration
• Thermal-magnetic trip unit
• Rated for 277 VAC applications
• Load-side lugs (TA1EG10)
• Accepts 8 AWG to 1/0 AWG copper or aluminum wire
• Form, fit, and functional replacement for compatible equipment
• UL Listed
• Built to last for long-term service

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HEB1B025B
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: HEB (EG Frame)
  
• Poles: 1
  
• Current Rating: 25 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–1/0 AWG Copper/Aluminum
  
• Dimensions: 1" W × 5.5" H × 3" D
  
• Weight: 1.257 lb
  
• Country of Origin: Dominican Republic
  

Material Compliance and Certifications

• UL Listed
• Copper and aluminum conductor compatible
• ECCN: EAR99
• Commodity Code: 8536200040
  

Where It Works Best

The HEB1B025B is used in compatible Siemens HEB (EG) frame panelboards found in commercial buildings, industrial facilities, and institutional environments. It is well suited for maintenance projects where the goal is to replace a breaker with one that matches the original equipment's form, fit, and function.