QBHW3090H - 90 Amp Circuit Breaker

QBHW3090H - 90 Amp Circuit Breaker

The QBHW3090H is a 90-Amp, 3-pole thermal-magnetic circuit breaker with a bolt-on Quicklag mounting design. It is rated to interrupt 22 kA at 240 VAC and is intended for use in compatible electrical distribution equipment that requires this level of fault protection.

Thermal magnetic breakers use two methods of protection. The thermal element reacts to overloads that develop over time, while the magnetic element trips almost instantly during a short circuit. This combination helps protect wiring and connected equipment from damage caused by excessive current.

The QBHW3090H carries a 40°C ambient rating and is HACR rated, making it suitable for many heating, ventilation, air conditioning, and refrigeration applications. Its bolt-on construction creates a secure connection inside compatible panelboards, which is often preferred in commercial and industrial installations where equipment is subject to vibration or frequent operation.

When you're replacing an existing breaker, always verify that the part number, electrical ratings, and panel compatibility match the original equipment requirements.

Key Features and Benefits

• 90 Amp current rating
• Three-pole design for three-phase systems
• Bolt-on Quicklag mounting
• Thermal magnetic trip mechanism
• 22kA interrupting rating at 240VAC
• 40°C ambient rating
• HACR rated
• Compact footprint for compatible panelboards
  

Technical Specifications

• Part Number: QBHW3090H
  
• Type: QBHW
  
• Amperage: 90 Amps
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Rating: 22kA @ 240VAC
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: Bolt-On (Quicklag)
  
• Ambient Rating: 40°C
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 3.00 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• HACR rated
• Thermal magnetic overcurrent protection
• Rated for operation in 40°C ambient conditions
• Intended for installation in compatible equipment in accordance with applicable electrical codes and manufacturer requirements.
  

Where It Works Best

• The QBHW3090H is commonly used in commercial and industrial electrical systems that operate on three-phase power. Typical applications include panelboards, HVAC equipment, distribution circuits, motor loads, and other branch circuits that require a 90-amp, 3-pole bolt-on breaker with a 22 kA interrupting rating at 240 VAC.