GE
GE THQB2150 Miniature Circuit Breaker 50A 2 Pole 120/240V AC
Two-pole miniature circuit breaker rated 50 A at 120/240 V AC with 10 kA interrupting capacity and bolt-on mounting for load centres
- 50 A two-pole protection for 120/240 V AC circuits
- 10 kA interrupting rating handles high fault currents
- Bolt-on mounting fits THQB load centres and lighting panels
- UL Listed for code-compliant installations
- Accepts 8–3 AWG copper or aluminium conductors
THQB Series 50 A Bolt-On Breaker
The GE THQB2150 is a two-pole miniature circuit breaker rated at 50 amperes for 120/240 volt AC single-phase systems. It mounts by bolting onto compatible THQ-style load centers or lighting panels. The toggle actuator provides clear on/off indication and manual reset after a trip event.
Sustained Overload and Fault Response
The breaker carries continuous rated current without nuisance tripping and interrupts short-circuit faults up to 10 kiloamperes at 120/240 volts AC. Thermal-magnetic operation handles prolonged overloads by heating a bimetal element while the magnetic coil reacts instantly to high-magnitude faults. Lug terminals accept copper conductors from 8 AWG to 3 AWG for secure, low-resistance connections.
Replacing Lower-Rated or Worn Breakers
This unit replaces a 50 A two-pole breaker that has reached end of life or no longer holds calibration, restoring reliable branch-circuit protection. It also serves when a circuit is upgraded from a smaller ampacity to 50 A, provided the panel bus and wiring are rated for the higher current. Builders needing a different pole count or voltage rating should select an alternative model.
Highlights
- 50 A two-pole protection for 120/240 V AC circuits
- 10 kA interrupting rating handles high fault currents
- Bolt-on mounting fits THQB load centres and lighting panels
- UL Listed for code-compliant installations
- Accepts 8–3 AWG copper or aluminium conductors
Specifications
| Brand | GE |
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Questions about this item
How much heat does the THQB2150 generate when carrying 50 A continuously?
The breaker is rated for 50 A at 120/240 V AC with a 10 kA interrupting capacity; normal operation produces only the heat expected from its internal resistance at rated load.
What panel or load center must I already have to mount this bolt-on breaker?
It fits GE lighting panels and load centers that accept the THQB series bolt-on frame, with a 100 A frame size and 3.5 in length.
Will this two-pole breaker work with my existing single-phase 120/240 V service and 8 AWG to 3 AWG wiring?
Yes, it is designed for single-phase 120/240 V AC systems and accepts wire sizes from 8 AWG up to 3 AWG on its lug terminals.
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