Description
1-Pole Q-Line Plug-In Circuit Breakers
ABB Q-Line 1-Pole Plug-In Circuit Breakers are designed for compatible electrical distribution and panelboard applications requiring single-pole branch circuit protection. This product family includes 15A, 20A, 30A, 40A, and 50A configurations.
All five models use a 1-pole plug-in configuration. Select the correct breaker according to the required ampere rating and confirm compatibility with the exact load center, panelboard, bus system, and electrical installation before ordering.
Product Highlights
- ABB Q-Line circuit breaker family
- 1-pole configuration
- Plug-in mounting
- 15A, 20A, 30A, 40A, and 50A options
- Five catalog-number configurations
- Designed for compatible electrical distribution equipment
- Suitable for approved branch circuit applications
- Verify exact equipment compatibility before ordering
Technical Specifications
| Manufacturer | ABB |
|---|---|
| Product Family | Q-Line |
| Product Type | Plug-In Circuit Breaker |
| Number of Poles | 1 |
| Mounting | Plug-In |
| Available Ampere Ratings | 15A, 20A, 30A, 40A, 50A |
| Available Catalog Numbers | THQL1115, THQL1120, THQL1130, THQL1140, THQL1150 |
| Primary Application | Compatible Load Center and Electrical Distribution Equipment |
Construction Details
These ABB Q-Line breakers use a single-pole plug-in configuration for installation in compatible electrical distribution equipment.
The plug-in mounting style is designed to connect to an approved compatible bus structure without the bolt-on mounting used by other Q-Line breaker configurations.
Confirm the exact load center, panelboard, breaker family, and bus compatibility before selecting or installing the breaker.
Available Circuit Breakers
Catalog Number & Ampere Rating
| Catalog Number | Ampere Rating | Poles | Mounting |
|---|---|---|---|
| THQL1115 | 15A | 1 | Plug-In |
| THQL1120 | 20A | 1 | Plug-In |
| THQL1130 | 30A | 1 | Plug-In |
| THQL1140 | 40A | 1 | Plug-In |
| THQL1150 | 50A | 1 | Plug-In |
Selecting the Correct Breaker
15A
Select THQL1115 for the 15A, 1-pole plug-in configuration.
20A
Select THQL1120 for the 20A, 1-pole plug-in configuration.
30A
Select THQL1130 for the 30A, 1-pole plug-in configuration.
40A
Select THQL1140 for the 40A, 1-pole plug-in configuration.
50A
Select THQL1150 for the 50A, 1-pole plug-in configuration.
Model Selection Guide
| Ampere Rating | Catalog Number | Poles | Mounting |
|---|---|---|---|
| 15A | THQL1115 | 1 | Plug-In |
| 20A | THQL1120 | 1 | Plug-In |
| 30A | THQL1130 | 1 | Plug-In |
| 40A | THQL1140 | 1 | Plug-In |
| 50A | THQL1150 | 1 | Plug-In |
Single-Pole Configuration
These breakers use a single-pole configuration for compatible branch circuit applications.
Select the breaker according to the required circuit ampacity and verify that the connected equipment and wiring are suitable for the selected rating.
Plug-In Mounting
Plug-In Connection
These THQL breakers use a plug-in mounting configuration for connection to compatible Q-Line electrical equipment.
Equipment Compatibility
Plug-in circuit breakers are equipment-specific. Confirm the exact load center, panelboard, and bus system before ordering or installation.
Common Applications
Electrical Distribution
- Compatible load centers
- Branch circuit protection
- Electrical distribution panels
- Lighting circuits
- General electrical loads
Maintenance & Replacement
- Compatible Q-Line breaker replacement
- Load center maintenance
- Electrical panel upgrades
- Branch circuit servicing
- Approved plug-in breaker applications
Installation & Selection Considerations
- Confirm the exact catalog number before ordering.
- Verify that a 1-pole Q-Line plug-in breaker is required.
- Select the correct ampere rating for the circuit and connected equipment.
- Confirm compatibility with the exact load center or electrical distribution equipment.
- Verify system voltage before installation.
- Verify available fault current against the applicable breaker interrupting rating.
- Confirm conductor material and wire size requirements for the exact breaker selected.
- Follow ABB terminal and torque requirements.
- Do not substitute a bolt-on breaker where a plug-in breaker is required.
- Do not exceed the electrical ratings of the breaker or connected equipment.
- Maintain applicable electrical working clearances.
- De-energize equipment before installation or service.
- Verify absence of voltage before working inside electrical equipment.
- Installation should be performed by qualified electrical personnel.
- Follow current ABB instructions and applicable electrical codes.
Product Documents
Review the ABB Q-Line 1-Pole breaker documentation for catalog-specific electrical ratings, breaker construction, dimensions, conductor requirements, listings, and additional manufacturer information.
Need Help Selecting a Circuit Breaker?
Our electrical and industrial product specialists can help review your load center, required amperage, system voltage, available fault current, conductor requirements, and breaker compatibility before you order.
Frequently Asked Questions
How many poles do these breakers have?
All five breakers in this product group use a 1-pole configuration.
What ampere ratings are available?
Available ratings are 15A, 20A, 30A, 40A, and 50A.
What is THQL1115?
THQL1115 is the 15A, 1-pole plug-in configuration.
What is THQL1120?
THQL1120 is the 20A, 1-pole plug-in configuration.
What is THQL1130?
THQL1130 is the 30A, 1-pole plug-in configuration.
What is THQL1140?
THQL1140 is the 40A, 1-pole plug-in configuration.
What is THQL1150?
THQL1150 is the 50A, 1-pole plug-in configuration.
Are these bolt-on breakers?
No. These THQL models use a plug-in mounting configuration.
Can I select the breaker based only on amperage?
No. Confirm the exact equipment compatibility, mounting type, system voltage, conductor requirements, and applicable electrical ratings before ordering.
Where can I review the ABB product documentation?
The ABB Q-Line 1-Pole Breaker Product Details PDF is linked in the Product Documents section above.
Important Ordering & Installation Notes
- Product: 1-Pole Q-Line Plug-In Circuit Breakers.
- THQL1115 – 15A.
- THQL1120 – 20A.
- THQL1130 – 30A.
- THQL1140 – 40A.
- THQL1150 – 50A.
- Manufacturer: ABB.
- Product family: Q-Line.
- Number of poles: 1.
- Mounting: Plug-In.
- Select the exact ampere rating required for the circuit and connected equipment.
- Confirm the exact load center, panelboard, and bus compatibility before ordering.
- Do not substitute a bolt-on breaker where a plug-in breaker is required.
- Verify the system voltage before installation.
- Confirm the available fault current does not exceed the applicable breaker interrupting rating.
- Verify conductor material and wire size requirements for the exact catalog number selected.
- Confirm terminal and conductor requirements before installation.
- Follow ABB terminal torque specifications for the selected breaker.
- Do not exceed the ampere, voltage, or interrupting ratings of the breaker or connected equipment.
- Maintain required electrical working clearances around the load center or distribution equipment.
- De-energize equipment before installing, removing, or servicing the circuit breaker.
- Verify absence of voltage before working inside electrical equipment or panelboards.
- Installation and service should be performed by qualified electrical personnel.
- Follow current ABB installation instructions and all applicable local and national electrical codes.
