GE THQB2120ST1 20A 2P 120/240V Q-Line Bolt-On Breaker w/ Shunt Trip

Retail Price: $134.99
Price: $75.00
  • SKUCB368G
In stock - 4 units available.
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GE Distribution Equip THQB2120ST1 Circuit Breaker

Stock photo shown for reference only. You will receive a unit of the listed catalog number in the condition stated above, inspected and tested to ESP Product Standards. Cosmetic appearance may vary.

1-Year Operational Guarantee Every breaker we sell — new, surplus, reconditioned, or used — is guaranteed to operate normally for one year from date of sale. Product Standards
Same-Day Shipping In-stock orders placed before 12pm PST typically ship the same business day, with UPS tracking provided. Shipping details
30-Day Returns Return authorization available within 30 days of receipt. Return policy
Talk to a Real Person Questions about fit, condition, or availability? Call 800-664-4377. Credit terms available for approved accounts.
Found this part for less somewhere else? Surplus and reconditioned prices vary widely with scarcity and condition — tell us what you found and make us an offer. Include the catalog number and we’ll respond same business day: call 800-664-4377 or email us. Every ESP unit is tested and backed by our 1-year operational guarantee — make sure you’re comparing like for like.

Description

GE THQB2120ST1 Specifications

ManufacturerGE / ABB
Catalog NumberTHQB2120ST1
SeriesQ-Line Type THQB
Amperage20 A
Voltage120/240V AC
Poles2-Pole, common trip
MountingBolt-On
Trip functionThermal-Magnetic — common trip across all poles
AccessoryFactory-installed shunt trip
Interrupting rating10 kAIC @ 120/240V AC
Panel spaces2 × 1 in
PanelboardsGE/ABB A-Series, AQ lighting and ReliaGear RQ panelboards
Wire range14–8 AWG Cu/Al
RatingsHACR rated · SWD rated
ListingsUL 489 listed · CSA certified
Shipping weight1.1 lb
ConditionReconditioned — 1-year operational guarantee

Sold reconditioned, inspected and tested to ESP Product Standards, and guaranteed to operate normally for one year from the date of sale.

Note the shunt trip. The ST1 suffix denotes a factory-installed shunt trip, which opens the breaker on a signal from a remote contact — emergency power-off, fire alarm interlock, elevator recall, remote shutdown. The coil is fitted at the factory and cannot be added in the field. Confirm the coil voltage from the unit before ordering.

More Details

At 20 amps this two-pole Q-Line device covers small 240-volt equipment and well pumps. The Type THQB line mounts bolt-on into GE/ABB A-Series, AQ lighting and ReliaGear RQ panelboards, carries ten kiloamperes of interrupting capacity and occupies 2 one-inch spaces. ESP holds 4 units, each tested for trip function before returning to stock. Reconditioning follows PEARL practice: contacts and arc chutes inspected, mechanism exercised, calibration checked against the nameplate rather than assumed. Q-Line panels are everywhere in North American buildings, which is why this catalog number keeps moving.

What is "surplus new"?

Surplus new means the item has never been installed or put into service. It may not arrive in its original packaging, but it has never been used.

What does "reconditioned" mean?

Reconditioned items have been inspected, cleaned, and tested to confirm they operate to the manufacturer's original specifications. Every reconditioned item we sell carries a one-year operational guarantee.

How fast will my order ship?

In-stock orders placed before 12pm PST usually ship the same business day via UPS, with tracking provided.

What if I can't find the item I need?

Call 800-664-4377 — we stock thousands of obsolete and hard-to-find electrical parts that may not yet be listed online.

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