QBHW2020S - 20 Amp Circuit Breaker

QBHW2020S - 20 Amp Circuit Breaker

The QBHW2020S is a 20-amp, 2-pole Quicklag breaker with a bolt-on connection and 120VAC shunt trip. It uses thermal-magnetic protection and is rated at 22 kA at 120/240 VAC. One of the more important things about this particular breaker is the shunt trip. When connected to the proper external control circuit, it provides a way to trip the breaker electrically rather than relying only on an overload, short circuit, or someone operating the breaker by hand. The QBHW2020S is also HACR-rated and has a 40°C rating, so it can be used in qualifying heating, air-conditioning, and refrigeration applications that require these specifications. For replacement work, check the breaker already installed before making a match. A 20-amp rating by itself isn't enough. You'll also want to confirm the two-pole design, QBHW type, bolt-on mounting, voltage and interrupting ratings, and the 120V shunt-trip requirement.

Key Features and Benefits

• 20 amp, 2-pole breaker for compatible electrical equipment
• QBHW Quicklag design
• Bolt-on mounting rather than a plug-in connection
• Thermal-magnetic trip mechanism for overload and short-circuit protection
• Rated 22 kA at 120/240VAC
• Includes a 120VAC shunt trip device for externally initiated tripping
• HACR rated for qualifying HVAC and refrigeration applications
• Rated at 40°C

Technical Specifications

• Part Number: QBHW2020S
  
• Type: QBHW
  
• Amperes: 20A
  
• Poles: 2
  
• A.I.C. Rating & Volts: 22 kA @ 120/240VAC
  
• Protection Type: Thermal-Magnetic
  
• Mounting: Bolt-On
  
• Shunt Trip: 120VAC
  
• HACR Rated: Yes
  
• Temperature Rating: 40°C
  
• Dimensions:
  • Height: 3.41 in.
  • Width: 3.0 in.
  • Depth: 2.92 in.

Material Compliance and Certifications

• The QBHW2020S carries an HACR rating, which is relevant for qualifying heating, air-conditioning, and refrigeration applications.
• If a job requires a particular UL, CSA, RoHS, or other compliance designation, check the breaker's labeling and documentation for the exact catalog number. It's better to verify the requirements for the individual breaker rather than assume that every product in the QBHW family has identical approvals.

Where It Works Best

• This breaker is best suited to electrical panels and distribution equipment designed for the QBHW bolt-on breaker configuration. It's also a practical choice when the application specifically needs a 20A, 2-pole breaker with a 120VAC shunt trip.