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THQB2120
THQB2120
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THQB2120 Specifications
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THQB2120, General Electric, Q-Line, Type THQB, P, PH, A, V, {AIC Rating}, Bolt-On, Thermal Magnetic, , molded case, circuit breaker
| Manufacturer | General Electric | Subcategory | Molded Case |
| Family | Q-Line | Protection | Thermal Magnetic |
| Connection | Bolt-On | ||
| Manufacturer | General Electric | ||
| Subcategory | Molded Case | ||
| Family | Q-Line | ||
| Protection | Thermal Magnetic | ||
| Connection | Bolt-On |
Electrical.com is NOT an authorized distributor for Square D and therefore the manufacturer’s warranty does not apply. This product does include an Electrical.com 2 year warranty.



We can test, inspect and repair your THQB2120. All repairs include a 2-Year Electrical.com Warranty.

The THQB2120 is a General Electric Q-Line molded case circuit breaker designed for bolt-on mounting in panelboards and lighting panels in commercial and light industrial applications. It is a ‑pole, amp thermal‑magnetic breaker rated 120/240 VAC with an interrupting rating of {aic rating}, suitable for single‑phase branch circuit protection and switching duty loads.
Mechanically, the THQB2120 features a molded plastic case with a manual toggle for switching and resetting after a trip event. It includes screw terminals designed to accept a range of conductor sizes common in branch circuits, and its compact footprint preserves panel space. The breaker’s common‑trip handle tie ensures simultaneous disconnection of both poles, enhancing safety and compliance with code requirements for multi‑pole circuits. In practice, this breaker is widely used for small HVAC units, water heaters, range circuits, and other 240 V loads in both new installations and retrofit panel upgrades.
You can find the THQB2120 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted breakers from manufacturers like General Electric, backed by a dedicated sales team ready to assist with technical questions, product selection, and support.

