HGB3B025B - 25Amp Circuit Breaker

HGB3B025B - 25Amp Circuit Breaker

When you’re working with an existing electrical system, getting the breaker specifications right matters. The HGB3B025B is a 25-amp, 3-pole HGB G-frame circuit breaker made for compatible low-voltage panelboard applications. It uses a thermal-magnetic trip unit to protect against overload and short-circuit conditions and is rated 14 kAIC at 600Y/347V and 35 kAIC at 480Y/277V. The breaker comes with TC1Q1 load-side lugs and accepts 14–10 AWG copper or aluminum wire, giving installers flexibility when working with compatible existing equipment.

Key Features and Benefits

• 25A, 3-pole design: Built for applications requiring three-pole circuit protection at a 25-amp rating.
• Thermal-magnetic protection: Responds to both prolonged overloads and short-circuit conditions.
• HGB G-frame construction: Designed for use with compatible low-voltage panelboard equipment.
• Load-side lugs included: Uses TC1Q1 load-side lugs only.
• Cu/Al conductor capability: Accepts both copper and aluminum conductors within the specified wire range.
• Compact footprint: Measures approximately 3 x 5.4 x 2.8 inches, making dimensions straightforward to check against an existing installation.
  

Technical Specifications

• Catalog Number / MFN: HGB3B025B
  
• Breaker Type: G-Frame Circuit Breaker
  
• Frame: HGB
  
• Amperage: 25A
  
• Number of Poles: 3
  
• Trip Type: Thermal-Magnetic
  
• Mounting: Low-Voltage Panelboard Mount
  
• Interrupting Rating at 600Y/347V: 14 kAIC
  
• Interrupting Rating at 480Y/277V: 35 kAIC
  
• Lug Configuration: Load-Side Lugs Only
  
• Lug Type: TC1Q1
  
• Wire Range: 14–10 AWG
  
• Conductor Compatibility: Copper / Aluminum (Cu/Al)
  
• Dimensions (W x H x D): 3 x 5.4 x 2.8 in.
  
• Net Weight: 2.756 lb.
  
• UPC: 887621219789
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The HGB3B025B is UL Listed, an important specification for professionals checking equipment requirements and compatibility.

Manufacturer documentation also identifies the breaker under ECCN EAR99 / AL N export-control classifications and lists it as not dangerous goods. RoHS substance-restriction compliance information and a SCIP number are not available in the supplied manufacturer specifications.

Where It Works Best

The HGB3B025B makes the most sense in compatible low-voltage panelboards, commercial electrical systems, and industrial power distribution applications where an HGB G-frame breaker with these exact ratings is needed. It can be especially useful in maintenance and replacement situations where the existing equipment calls for a 25A, three-pole, thermal-magnetic breaker with the corresponding voltage and interrupting ratings.