HGL36125 - 125 Amp Circuit Breaker

HGL36125 - 125 Amp Circuit Breaker

When you’re replacing or specifying a breaker, the details matter. The HGL36125 PowerPacT H circuit breaker is a 125A, 3-pole thermal-magnetic breaker built for electrical distribution applications where dependable overload and short-circuit protection is required. The HGL36125 has an 80% continuous-current rating and is HACR rated, making it a practical choice for a range of commercial and industrial distribution systems. If your application calls for a 125-amp H-frame breaker with three poles, thermal-magnetic protection, and an 18 kA rating at 600VAC, the HGL36125 checks the important boxes without adding unnecessary complexity.

Key Features and Benefits

• 125A, 3-pole design: Built for compatible three-phase electrical distribution applications.
• Thermal-magnetic protection: Helps protect circuits against both sustained overloads and short-circuit faults.
• Multiple interrupting ratings: Rated 65 kA at 240VAC, 35 kA at 480VAC, and 18 kA at 600VAC under UL 489.
• Dual-break rotating contacts: Designed to reduce peak current when a short-circuit fault occurs.
• Line and load lugs included: A straightforward connection arrangement for unit-mount installations.
• Wide conductor range: AL150HD terminals accommodate 14 AWG through 3/0 AWG copper or aluminum conductors.
• Built-in push-to-trip function: Allows qualified personnel to manually trip the breaker during testing and maintenance.
  

Technical Specifications

• Catalog Number: HGL36125
  
• Product Family: PowerPacT H
  
• Type: H-frame circuit breaker
  
• Rated Current: 125A
  
• Poles: 3
  
• Trip Technology: Thermal-magnetic
  
• Continuous Current Rating: 80%
  
• Control: Toggle
  
• Breaking Capacity Code: G
  
• UL 489 Breaking Capacity: 65 kA at 240VAC; 35 kA at 480VAC; 18 kA at 600VAC
  
• Rated Operational Voltage: 690VAC, 50/60 Hz
  
• Rated Insulation Voltage: 750V
  
• Impulse Withstand Voltage: 8 kV
  
• Magnetic Trip Current: 1700A
  
• Magnetic Hold Current: 900A
  
• Utilization Category: Category A
  
• Isolation: Suitable for isolation per IEC 60947-2
  
• Mounting Style: Unit mount
  
• Connections: Lugs on line and load sides
  
• Dimensions: 6.4 in. H × 4.09 in. W × 3.4 in. D
  
• Weight: 4.9 lb. (2.2 kg)
  

Material Compliance and Certifications

The HGL36125 circuit breaker is UL, CSA, and NOM certified and carries the CE mark. It is designed in accordance with applicable UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 requirements. Its front cover provides IP40 protection according to IEC 60529, and the breaker is classified for Pollution Degree 3 under IEC 60947-1.

Where It Works Best

The HGL36125 makes sense in commercial and industrial electrical distribution systems where the equipment calls for a 125A, 3-pole, unit-mount H-frame circuit breaker. Its combination of thermal-magnetic protection, line and load lugs, and an 18 kA interrupting rating at 600VAC makes it particularly useful for compatible distribution equipment where straightforward circuit protection is the priority.