Overview
The ABB THHQB2170 is a 70 amp, 2-pole Q-Line bolt-on circuit breaker for compatible ABB and legacy GE load centers and lighting panelboards. It is rated 120/240V AC with 22kAIC interrupting capacity and fixed long-time and instantaneous thermal-magnetic protection.
Key Features
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Protection: Fixed long-time and instantaneous thermal-magnetic overcurrent protection.
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Installation: Q-Line bolt-on bus mounting with load-side box lugs for supported copper or aluminum conductors.
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Compatibility: Designed for compatible ABB and legacy GE Q-Line bolt-on panelboards; verify panel labeling before installation.
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Performance: 70A, 2-pole, 120/240V AC, 22kAIC, reverse-feed suitable, HACR rated, and listed under UL File E11592.
Specifications
- Manufacturer: ABB
- Model: THHQB2170
- Series / Frame: Q-Line
- Amperage: 70 A
- Poles / Phase: 2 Pole / 1 Phase
- Voltage: 120/240 V AC
- Interrupting Rating: 22 kAIC
- Protection: Thermal Magnetic, fixed LI
- Mounting: Bolt-On
- Terminal: Box Lugs
- Wire Range: 6-1/0 AWG copper; 4-1/0 AWG aluminum
- Temperature Rating: 104°F (40°C)
- Certifications / Markings: UL 489 and HACR Rated; UL File E11592
- GSA Compliance: No
- Color: Black
Common Applications
Used for branch-circuit protection in compatible residential and commercial bolt-on panelboards, including HVAC equipment and other two-pole loads within the breaker and panel ratings.