ABB
3-Pole Q-Line Bolt-On Miniature Circuit Breakers
- SKU:
- THQB32045
- Availability:
- Allow 2-3 Days to Ship
- Weight:
- 1.13 LBS
Description
3-Pole Q-Line Bolt-On Miniature Circuit Breakers
ABB THQB 3-pole bolt-on circuit breakers are part of the Q-Line family, designed for dependable overcurrent and short-circuit protection in residential and commercial electrical distribution systems.
These compact thermal-magnetic breakers feature bolt-on mounting, common trip operation, and a 240V AC rating with 10 kA interrupting capacity. Available ratings include 20A, 30A, 40A, 45A, 50A, 60A, and 100A.
Key Features
- 3-pole bolt-on miniature circuit breaker
- 240V AC voltage rating
- 10 kA interrupting rating
- Thermal-magnetic trip protection
- Internal common trip design
- Quick-make / quick-break mechanism
- Easy-to-spot trip indication
- One-inch wide per pole compact Q-Line design
- Load lug terminal connection
- UL listed
Typical Applications
Ideal for residential and commercial panelboard applications, including lighting panels, load centers, HVAC equipment, branch circuit protection, and general electrical distribution systems requiring 3-pole bolt-on circuit protection.
Construction Details
The THQB series uses a compact Q-Line frame with bolt-on bus connection for secure installation in compatible ABB / GE panelboards.
Thermal-magnetic trip elements provide fixed long-time and instantaneous trip protection for overload and short-circuit conditions.
Load-side lug terminals support field wiring connections for compatible copper or aluminum conductors, depending on breaker amp rating and installation requirements.
Important Notes
Verify panelboard compatibility before installation. THQB breakers are bolt-on devices and are not interchangeable with plug-in breaker styles.
Always confirm conductor size, torque requirements, and application ratings using the manufacturer documentation.
Installation should be performed by qualified electrical personnel in accordance with applicable codes and standards.
