Description
3-Pole Molded Case Circuit Breakers
3-Pole Molded Case Circuit Breakers are designed for three-phase electrical distribution and protection applications where dependable overcurrent protection and switching are required. These breakers are available in 200A and 225A configurations.
The molded-case construction provides a compact protective device for compatible panelboards, switchboards, equipment, and distribution systems. Select the breaker according to the required ampere rating and verify compatibility with the intended electrical equipment before ordering.
Product Highlights
- 3-pole molded case circuit breaker
- Designed for three-phase electrical applications
- Available in 200A and 225A ratings
- Compact molded-case construction
- Provides overcurrent protection and switching
- Suitable for compatible commercial and industrial electrical systems
- Two catalog-number options
- Verify equipment compatibility before ordering
Technical Specifications
| Product Type | Molded Case Circuit Breaker |
|---|---|
| Number of Poles | 3 |
| Available Ampere Ratings | 200A, 225A |
| Available Catalog Numbers | A2A200TT, A2A225TT |
| Primary Function | Overcurrent Protection and Circuit Switching |
| Typical Application | Compatible Three-Phase Electrical Distribution Equipment |
Construction Details
These circuit breakers use a molded-case construction that houses the internal switching and protective components inside a compact insulating enclosure.
The three-pole configuration is intended for compatible three-phase electrical circuits where all three phases require coordinated switching and overcurrent protection.
Because circuit breaker compatibility depends on the equipment, frame, voltage, interrupting rating, trip configuration, and installation requirements, the exact application should be verified before ordering.
Available Circuit Breakers
Catalog Number & Ampere Rating
| Catalog Number | Ampere Rating | Poles | Product Type |
|---|---|---|---|
| A2A200TT | 200A | 3 | Molded Case Circuit Breaker |
| A2A225TT | 225A | 3 | Molded Case Circuit Breaker |
Selecting the Correct Circuit Breaker
Ampere Rating
Select either the 200A or 225A model according to the electrical system design, conductor sizing, equipment requirements, and applicable protection requirements.
Equipment Compatibility
Confirm that the selected breaker is compatible with the intended panelboard, switchboard, enclosure, bus configuration, mounting arrangement, and electrical system.
Common Applications
Commercial Electrical Distribution
- Panelboards
- Switchboards
- Building distribution equipment
- Mechanical equipment feeds
- Commercial electrical systems
Industrial Applications
- Industrial distribution systems
- Equipment feeders
- Motor and machinery distribution where compatible
- Branch and feeder protection
- Maintenance and replacement applications
Installation Considerations
- Confirm the required ampere rating before ordering.
- Verify that the breaker is compatible with the intended electrical equipment.
- Confirm the required voltage rating and interrupting capacity for the installation.
- Verify mounting and connection requirements.
- Use conductors sized for the circuit and applicable electrical code requirements.
- Observe required torque values for electrical connections.
- 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 manufacturer instructions and applicable electrical codes.
Why Choose a Molded Case Circuit Breaker?
Compact Protection
Molded case breakers combine switching and overcurrent protection in a compact device for compatible distribution equipment.
Three-Pole Operation
The three-pole design provides coordinated switching of all three phases in compatible three-phase systems.
Service & Replacement
Catalog-specific breaker selection helps support equipment maintenance and replacement when the correct compatible model is identified.
Need Help Selecting a Circuit Breaker?
Our electrical and industrial product specialists can help review your equipment, ampere rating, voltage, interrupting requirements, mounting configuration, and application before you order.
Frequently Asked Questions
What is a molded case circuit breaker?
A molded case circuit breaker is a protective switching device housed in an insulating molded enclosure and used to provide overcurrent protection for compatible electrical circuits.
How many poles do these breakers have?
These are 3-pole circuit breakers intended for compatible three-phase electrical applications.
What ampere ratings are available?
Available ratings are 200A and 225A.
Which catalog number is the 200A breaker?
Catalog number A2A200TT is the 200A model.
Which catalog number is the 225A breaker?
Catalog number A2A225TT is the 225A model.
Can I select a breaker based only on amperage?
No. The breaker must also be compatible with the electrical equipment, voltage, interrupting requirements, mounting configuration, and complete system design.
Can these breakers be used in any panelboard?
No. Circuit breakers are equipment-specific. Confirm that the selected breaker is approved and compatible with the exact panelboard, switchboard, or distribution equipment.
Who should install the breaker?
Installation and service should be performed by qualified electrical personnel following current manufacturer instructions and applicable electrical codes.
Important Ordering & Installation Notes
- Product: 3-Pole Molded Case Circuit Breakers.
- A2A200TT: 200A.
- A2A225TT: 225A.
- Number of poles: 3.
- Product type: Molded case circuit breaker.
- Confirm required ampere rating before ordering.
- Verify compatibility with the exact electrical equipment.
- Confirm voltage and interrupting requirements.
- Verify mounting and connection configuration.
- De-energize equipment before installation or service.
- Installation should be performed by qualified personnel.
- Follow current manufacturer instructions and applicable electrical codes.
