THQB2190 - 90A Circuit Breaker

THQB2190 - 90A Circuit Breaker

The THQB2190 is a 90-amp, 2-pole bolt-on circuit breaker that provides overcurrent protection in your electrical distribution systems. As part of the THQB Q-Line series, it is designed for installation in compatible bolt-on panelboards that require a secure mounting connection. The breaker is rated for 120/240VAC and has an interrupting capacity of 10,000 AIC.

This molded case circuit breaker is commonly found in commercial buildings, industrial facilities, and larger residential electrical systems. Its 90 Amp rating makes it suitable for protecting higher-demand circuits, including HVAC equipment, distribution feeders, and other loads that require two-pole protection. The HACR rating allows use in heating, air conditioning, and refrigeration applications that require code-compliant circuit protection.

Key Features and Benefits

• 90 Amp current rating
• 2-pole configuration
• Bolt-on mounting design
• 10kA interrupting capacity at 120/240VAC
• HACR rated
• Q-Line series circuit breaker
• Molded case construction
• Helps protect electrical circuits from overloads and short circuits
  

Technical Specifications

• Part Number: THQB2190
  
• Type: THQB
  
• Series: Q-Line
  
• Circuit Breaker Style: Molded Case
  
• Mounting: Bolt-On
  
• Poles: 2
  
• Amperage: 90A
  
• Voltage: 120/240VAC
  
• Interrupting Rating: 10kA
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.5 in.
  • Width: 2.0 in.
  • Depth: 2.81 in.

Material Compliance and Certifications

• HACR Rating: This circuit breaker carries an HACR rating for use with heating, air conditioning, and refrigeration equipment. Installation should be performed in accordance with applicable electrical codes and manufacturer requirements.
  

Where It Works Best

• The THQB2190 is commonly used in commercial panelboards, industrial electrical systems, HVAC installations, and larger residential applications that require a 90-amp, 2-pole breaker. Its bolt-on design makes it a good fit for panelboards where a secure mechanical connection is preferred.