ABB
100A 2-Pole 120/240V Bolt-On Circuit Breaker
- SKU:
- THHQB21100
- Availability:
- Allow 2-3 Days to Ship
- Weight:
- 0.75 LBS
Description
100A 2-Pole 120/240V Bolt-On Circuit Breaker
ABB THHQB21100 100A 2-Pole Bolt-On Circuit Breaker is designed for compatible electrical distribution and panelboard applications requiring a 100-amp, two-pole breaker with bolt-on mounting.
Catalog number THHQB21100 is intended for compatible 120/240V AC systems. Because this is a panelboard-specific bolt-on breaker, confirm the exact equipment series, bus configuration, voltage, available fault current, conductor requirements, and installation requirements before ordering.
Product Highlights
- ABB bolt-on circuit breaker
- Catalog number THHQB21100
- 100A ampere rating
- 2-pole configuration
- 120/240V AC application
- Bolt-on mounting
- Designed for compatible panelboard and electrical distribution equipment
- Suitable for compatible branch or feeder circuit protection applications
- Single-SKU product
- Verify exact equipment compatibility before ordering
Technical Specifications
| Manufacturer | ABB |
|---|---|
| Catalog Number | THHQB21100 |
| Product Type | Bolt-On Circuit Breaker |
| Ampere Rating | 100A |
| Number of Poles | 2 |
| Voltage | 120/240V AC |
| Mounting | Bolt-On |
| Primary Application | Compatible Panelboard / Electrical Distribution Equipment |
Construction Details
The THHQB21100 uses a two-pole bolt-on configuration for installation in compatible electrical distribution equipment.
Bolt-on breakers attach directly to the approved panelboard bus structure and should only be used in equipment specifically listed for the breaker family and catalog configuration.
Confirm the panelboard series, bus arrangement, breaker mounting provisions, voltage rating, and complete equipment requirements before installation.
Electrical Configuration
100A Rating
THHQB21100 provides a 100-amp breaker configuration for compatible electrical loads and distribution applications.
2-Pole Design
The breaker uses a two-pole configuration for compatible circuits requiring simultaneous protection and switching of two conductors.
120/240V AC
This catalog number is intended for compatible 120/240V AC electrical systems.
Bolt-On Mounting
Secure Bus Connection
Bolt-on mounting provides a direct mechanical and electrical connection to the compatible panelboard bus structure.
Equipment-Specific Compatibility
Bolt-on circuit breakers are not universally interchangeable. Verify that THHQB21100 is approved for the exact panelboard or distribution equipment before installation.
Common Applications
Electrical Distribution
- Compatible panelboards
- Commercial electrical distribution
- Branch circuit protection
- Feeder circuit protection
- Electrical equipment panels
Maintenance & Replacement
- Compatible breaker replacement
- Panelboard maintenance
- Electrical distribution upgrades
- Service and equipment repairs
- Approved bolt-on breaker applications
Installation & Selection Considerations
- Confirm catalog number THHQB21100 before ordering.
- Verify that a 100A, 2-pole breaker is required.
- Confirm compatibility with the exact panelboard or electrical equipment.
- Verify bolt-on mounting requirements.
- Confirm the electrical system is compatible with the 120/240V AC rating.
- Verify available fault current against the breaker's applicable interrupting rating.
- Confirm conductor size and material requirements.
- Follow manufacturer terminal and torque requirements.
- Do not exceed the breaker or connected equipment ratings.
- Maintain applicable electrical working clearances.
- De-energize equipment before installation or service.
- Verify absence of voltage before working on electrical equipment.
- Installation should be performed by qualified electrical personnel.
- Follow current ABB instructions and applicable electrical codes.
Product Documents
Review the ABB THHQB21100 product details for catalog-specific electrical ratings, mounting information, breaker characteristics, dimensions, conductor requirements, listings, and manufacturer guidance.
Need Help Selecting a Circuit Breaker?
Our electrical and industrial product specialists can help review your panelboard, ampere rating, pole count, system voltage, available fault current, conductor requirements, and breaker compatibility before you order.
Frequently Asked Questions
What is the catalog number?
The catalog number is THHQB21100.
What is the ampere rating?
THHQB21100 is rated at 100 amps.
How many poles does THHQB21100 have?
It is a 2-pole circuit breaker.
What voltage is this breaker designed for?
This product is listed here for compatible 120/240V AC applications.
Is THHQB21100 a bolt-on breaker?
Yes. THHQB21100 uses a bolt-on mounting configuration.
Can this breaker be used in any panelboard?
No. Verify compatibility with the exact panelboard, bus system, breaker family, and equipment listing before installation.
Can I select this breaker based only on amperage and pole count?
No. Also confirm system voltage, available fault current, equipment compatibility, conductor requirements, and mounting configuration.
Where can I review ABB's product details?
The ABB THHQB21100 Product Details PDF is linked in the Product Documents section above.
Important Ordering & Installation Notes
- Product: 100A 2-Pole 120/240V Bolt-On Circuit Breaker.
- Manufacturer: ABB.
- Catalog number: THHQB21100.
- Ampere rating: 100A.
- Number of poles: 2.
- Voltage: 120/240V AC.
- Mounting: Bolt-On.
- Confirm exact panelboard compatibility before ordering.
- Verify available fault current and equipment ratings.
- Confirm conductor and terminal requirements.
- De-energize equipment before installation or service.
- Installation should be performed by qualified electrical personnel.
- Follow current ABB instructions and applicable electrical codes.
