Overview
The ABB THHQB32070 is a 70-amp, 3-pole Q-Line bolt-on circuit breaker rated for 240V AC distribution systems. Its fixed thermal-magnetic trip provides long-time overload and instantaneous short-circuit protection with a 22 kA interrupting rating.
Key Features
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Protection: Non-interchangeable fixed LI thermal-magnetic trip with internal common-trip operation.
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Installation: Bolt-on bus connection and load-side box lugs; suitable for reverse-feed applications.
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Compatibility: Use only in compatible ABB and legacy GE Q-Line panelboards specifically listed for THHQB breakers; verify equipment labeling before installation.
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Performance: Rated 70A, 3-pole, 240V AC with 22 kAIC interrupting capacity and quick-make/quick-break operation.
Specifications
- Catalog Number: THHQB32070
- Series / Frame: Q-Line
- Amperage: 70A
- Poles / Phase: 3-pole / three-phase applications
- Voltage: 240V AC
- Interrupting Rating: 22 kAIC
- Mounting: Bolt-on
- Trip Function: Fixed long-time and instantaneous thermal-magnetic
- Wire Range: 6-1/0 AWG copper or 4-1/0 AWG aluminum
- Terminal: Box lugs
- Calibration Temperature: 40°C
- Certifications / Markings: UL 489, UL File E11592, HACR
- UPC: 783164118643
Common Applications
For compatible commercial and light-industrial panelboard branch circuits requiring a 70A three-pole bolt-on breaker with 22 kAIC capacity. A qualified electrical professional should verify the panelboard listing, conductor sizing, and installation requirements.
