Choosing between two breakers for electrical distribution switchgear protection starts with the breaker's job, not the brand. The GE THED134150 and Eaton QCGFEP1020 both protect circuits, but they sit at opposite ends of the panel. One is a heavy molded-case breaker for higher-voltage distribution; the other is a ground-fault equipment protection breaker for branch circuits. Their listed prices frame the choice at the start: $460 for the GE unit and $175 for the Eaton unit, a $285 spread. Match the voltage and fault-protection need first, and the price decision becomes simpler.
Quick Verdict
If your installation needs a molded-case breaker for a higher-voltage feeder or panelboard, the GE THED134150 is the right choice. If you need a ground-fault equipment protection breaker for a branch circuit, the Eaton QCGFEP1020 is the match. They are not interchangeable substitutes: the voltage rating and fault-protection job settle that before you look at price.
Comparison
| Consideration | GE THED134150 | Eaton QCGFEP1020 |
| Listed price | $460.00 | $175.00 |
| Condition | Used | New |
| Frame / model | THED molded-case circuit breaker | QCGFEP ground-fault equipment protection breaker |
| Poles | 3 | 1 |
| Voltage | 480V AC | 120V |
| Current | 150A | 20A |
| Protection | Thermal-magnetic trip | 30mA ground-fault sensitivity with line and load lugs |
Where Each Product Wins
The GE THED134150 wins when the application is heavy feeder protection in higher-voltage distribution. Its frame series and trip design put it on the heavy side of power distribution, where a branch ground-fault breaker cannot handle the load.
The Eaton QCGFEP1020 wins when you need ground-fault equipment protection on a branch circuit. As a branch circuit breaker with ground-fault protection, it is built for a smaller, specific circuit rather than feeding a large distribution bus.
Product Notes
GE THED134150 150A 480V 3P Molded Case Circuit Breaker Used Tested
The GE THED134150 is a 150A, 480V, three-pole molded-case circuit breaker in General Electric's THED frame series. The thermal-magnetic trip system and three-pole design make it a suitable fit for industrial power distribution, commercial switchgear, panelboards, and motor control circuits. Because it is a used and tested surplus unit, the condition is an important factor: it gives you a working heavy-duty breaker, but it is not a brand-new unit. If your project needs a higher-voltage feeder breaker and you can accept used/tested condition, this is the concrete choice. If your project calls for a branch-circuit breaker, this unit is oversized for that job.
QCGFEP1020 Ground Fault Equipment Protection Circuit Breaker
The Eaton/Cutler-Hammer QCGFEP1020 is the new option in this comparison. It is a 20A, single-pole breaker for 120V circuits with 30mA ground-fault equipment protection, and it includes feed-thru lugs on the line and load side. That makes it a logical fit for protecting equipment on a branch circuit rather than protecting a large feeder. The limitation is its narrow rating: 20A at 120V does not reach the higher-voltage, three-pole duties of the GE unit, so it should be chosen only when the circuit is small and ground-fault protection is the goal. For a branch circuit that needs ground-fault equipment protection, the QCGFEP1020 is the practical match.
Final Choice by Use Case
Choose the GE THED134150 when the panel runs a higher-voltage feeder. Choose the Eaton QCGFEP1020 when the job is a branch circuit that needs ground-fault equipment protection. The circuit decides.
