Abb THQB1120ST1 MCB 20A 10kA 1P 120/240V ST1

Product Description

The ABB THQB1120ST1 is a Q line circuit breaker, a compact, thermal-magnetic device designed for residential and commercial applications. These QB breakers are bolt-on versions of the Q Line used for bolting to the bus connections of load centers and lighting panels. Rated at 20A with a 10kA interrupting rating and a voltage rating of 120/240 VAC.

• Features quick-make / quick-break mechanisms
• Includes common trip bars
• Offers easy to spot trip indication

Product Highlights

This 1-pole breaker is suitable for reverse feed and has special HACR and SWD markings. It is UL and CSA approved.

Product Information

Standard Information

• Brand: ABB
• Manufacturer Part Number: THQB1120ST1

Technical Specifications

• Category: Q-Line Miniature Circuit Breakers
• Product Line: TEY / Q-Line (Bolt-On)
• Trip Style: Non-Interchangeable
• Frame Type: Q-Line
• Amperage: 20 A
• System Voltage: 120 Vac
• Poles: 1
• Trip Function: LI
• Continuous Current Rated: Standard
• 120 Vac Interrupting Rating: 10 KAIC
• 120/240 Vac Interrupting Rating: 10 KAIC
• Suitable for Reverse Feed: Yes
• Long Time: Fixed
• Instantaneous: Fixed
• Special Markings: HACR
• SWD: SWD
• UL File #: E11592
• CSA File#: LR10263
• Manufacturer: ABB Electrification
• Voltage Rating: 120/240 VAC
• Interrupt Rating: 10 kA
• Trip Type: LI/Thermal Magnetic/Shunt
• Type: Type THQB Molded Case Miniature
• Wire Size: 14 to 8 AWG, 12 to 8 AWG
• Mounting Type: Bolted-On
• Temperature Rating: 40 deg C
• UNSPSC: 39121616
• Used On: AL/AQ/ALC/AQC/Spectra Series Panelboard, Residential Load Center
• Approval: UL, CSA
• Current Rating: 20 Amp
• Number Of Poles: 1
• Mounting: Bolt-On
• Interrupting Rating: 10 Kiloamp