GE
GE THQB32100 3-Pole 100 Amp Bolt-On Miniature Circuit Breaker
★★★★★
GE THQB32100 Bolt-On Breaker: 100-Amp 3-Pole Protection for 240V Commercial and Residential Panels
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Overview
Reliable Circuit Protection for Electrical Systems
The GE THQB32100 Miniature Circuit Breaker is designed to provide dependable overcurrent protection in electrical panels. This 3-pole, 100 Amp breaker ensures safety and prevents damage to your electrical system.
- Brand: GE
- Current Rating: 100 Amps
- Circuit Breaker Type: Standard
- Mounting Type: Bolt-On Mount
- Number of Poles: 3
- Voltage: 240 Volts AC
Pros & Cons
👍 Pros
- Bolt-on mounting provides a more secure, vibration-resistant connection to the bus bar than plug-in designs
- 100-amp 3-pole configuration handles heavy loads including sub-panel feeds, HVAC, and commercial equipment
- GE THQB series is a widely stocked, well-proven breaker line with consistent quality across production runs
- Standard 10,000 AIC interrupting capacity meets requirements for most residential and light commercial panels
👎 Cons
- Only fits GE panels designed for THQB bolt-on breakers — not compatible with plug-in bus bars or other manufacturers
- 100-amp breakers require heavy gauge wire that is more difficult to route and terminate in tight panel boxes
- No visible trip indicator window, which makes it harder to identify a tripped breaker at a glance in a loaded panel
- Price runs higher than equivalent plug-in breakers due to bolt-on construction
Frequently Asked Questions
What electrical panels is the GE THQB32100 compatible with?
This is a bolt-on type breaker designed for GE panels that accept THQB-series breakers. It is not interchangeable with plug-in (THQ) or other manufacturer's panels. Verify your panel's bus bar accepts bolt-on mounting before purchasing.
Can I use this breaker as a main breaker or is it only for branch circuits?
The THQB32100 at 100 amps and 3 poles can serve as a main breaker in a sub-panel or as a branch circuit breaker feeding large 3-phase loads like HVAC equipment, welders, or commercial machinery. Your panel's bus bar rating must be equal to or greater than 100 amps.
What wire size do I need for a 100-amp 3-pole breaker?
Per NEC code, 100-amp circuits typically require #1 AWG copper or 1/0 AWG aluminum conductors, though you should verify with your local electrical code and the specific wire's ampacity rating for your installation conditions.
Is this breaker rated for 120/240V single-phase or 3-phase applications?
The THQB32100 is a 3-pole 240V breaker suitable for both 3-phase commercial applications and single-phase 120/240V panels where a 3-pole configuration is required. The three poles allow it to protect all three legs of a circuit simultaneously.
Does this breaker have a 10,000 AIC interrupting rating?
GE THQB-series miniature circuit breakers carry a standard 10,000 AIC (Ampere Interrupting Capacity) rating, which is suitable for most residential and light commercial installations. Verify your panel's available fault current does not exceed this rating.
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