ABB / General Electric THHQB32030ST1 Miniature Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Quantity
ABB / General Electric THHQB32030ST1 - 30A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Part of the Q-Line series, the GE THHQB32030ST1 provides advanced control for commercial systems. This 30-amp, 3-pole device includes a factory-installed 120VAC shunt trip, allowing users to remotely open the circuit for emergency shutdowns or automated control. The unit features a secure bolt-on connection designed for GE A-Series panelboards and AQ lighting panels. Delivering a 22kAIC rating at 240V, this breaker includes quick-make/quick-break mechanisms and is HACR rated for HVAC use.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THHQB32030ST1 |
| Series | THHQB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 120VAC, 22kA @ 240VAC, 22kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120VAC) |
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip, Reverse Feed, High Interrupting Capacity |
Product FAQs
5 answersWhich panelboards are compatible with the THHQB32030ST1 circuit breaker?
This bolt-on breaker is designed for direct installation into GE A-Series panelboards and GE AQ lighting panels. It cannot be used in standard residential GE PowerMark load centers, which require plug-in style Q-Line breakers.
What does the ST1 suffix indicate on this GE circuit breaker?
The ST1 suffix signifies that the breaker includes a factory-installed 120VAC shunt trip accessory. This allows the breaker to be tripped remotely via an external control signal, commonly used for emergency stop buttons or automated system shutdowns.
How does the shunt trip accessory operate on this breaker?
The internal shunt trip mechanism requires an external 120VAC control voltage source. When voltage is applied to the shunt trip coil from a remote switch or relay, it mechanically forces the breaker's contacts to open, interrupting power to the circuit.
What is the difference between the THHQB32030ST1 and a standard THQB breaker?
The H in the THHQB prefix indicates a higher interrupting capacity. While standard THQB breakers are typically rated for 10kAIC, this THHQB model is rated to safely clear fault currents up to 22kA at 120/240V or 208V.
Why might this breaker arrive with ABB branding instead of General Electric?
ABB acquired GE Industrial Solutions in 2018. As a result, Q-Line breakers like the THHQB32030ST1 may feature either GE or ABB branding on the label. Both versions are manufactured to the exact same specifications and are fully interchangeable.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
- JLJames L. L.Verified BuyerReviewingABB / General Electric THHQB21100 - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/6/26ABB / General Electric THHQB21100
Fast Service and delivery, The breaker was as described and brand new! Great pricing and great Service. I paid extra for UPS ground, it was delivered quickly.
- SNScott N.Verified BuyerReviewingABB / General Electric THHQB32030 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/30/25Perfect
The correct breaker the first time - every time.
- AGAlejandra G.Verified BuyerReviewingABB / General Electric THHQB1140 - 40A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Everithing is good!
Everithing is good!
- LMLuis M.ReviewingABB / General Electric THHQB2145 - 45A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/23Good product and good service
Good product and good service
- SHScott H.ReviewingABB / General Electric THHQB2180 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/21/2280amp commercial breaker
Great how easy it was to order and how fast I got it. I will order one again when needed