Two-Pole Definite Purpose Contactors are electromechanical switches that control electrical power circuits. They are designed to handle specific loads that are directly related to their intended use. A Definite Purpose Contactor is typically used in HVAC applications such as compressors, fan motors, and heating elements. In this article, we will discuss the wiring diagram for a 2 pole Definite Purpose Contactor.
What is a Definite Purpose Contactor?
A Definite Purpose Contactor is an electrical switch that is specifically designed for a particular application. They are built to handle specific electrical loads and are rated accordingly. Definite Purpose Contactors can be single or multi-pole, depending on the application. They are typically used in HVAC, refrigeration, and other commercial and industrial equipment.
A 2 pole Definite Purpose Contactor is a two-pole switch that is designed to control a single-phase load. This type of contactor is commonly used in HVAC applications such as compressors and fan motors.
Wiring Diagram for a 2 Pole Definite Purpose Contactor
The wiring diagram for a 2 pole Definite Purpose Contactor is relatively simple. There are three terminals on the contactor: the line side, the load side, and the control side. The line side is where the power comes in, the load side is where the power goes out, and the control side is where the contactor is controlled from. The wiring diagram is as follows:
| Terminal | Description | Wire Color |
|---|---|---|
| L1 | Line Side Terminal 1 | Black |
| L2 | Line Side Terminal 2 | Red |
| T1 | Load Side Terminal 1 | Brown |
| T2 | Load Side Terminal 2 | Orange |
| A1 | Control Side Terminal 1 | White |
| A2 | Control Side Terminal 2 | Black |
Line Side Wiring
The Line Side of the contactor is where the power comes in. There are usually two wires connected to the Line Side, one for each pole. The wires are typically black and red. The black wire is connected to terminal L1, and the red wire is connected to terminal L2.
Load Side Wiring
The Load Side of the contactor is where the power goes out. There are also two wires connected to the Load Side, one for each pole. The wires are typically brown and orange. The brown wire is connected to terminal T1, and the orange wire is connected to terminal T2.
Control Side Wiring
The Control Side of the contactor is where the contactor is controlled from. There are also two wires connected to the Control Side, one for each pole. The wires are typically white and black. The white wire is connected to terminal A1, and the black wire is connected to terminal A2.
FAQs
1. What is a Definite Purpose Contactor?
A Definite Purpose Contactor is a type of electrical switch that is designed for a specific application. They are built to handle specific electrical loads and are rated accordingly. Definite Purpose Contactors can be single or multi-pole, depending on the application. They are typically used in HVAC, refrigeration, and other commercial and industrial equipment.
2. What is a 2 Pole Definite Purpose Contactor?
A 2 pole Definite Purpose Contactor is a two-pole switch that is designed to control a single-phase load. This type of contactor is commonly used in HVAC applications such as compressors and fan motors.
3. What is the wiring diagram for a 2 Pole Definite Purpose Contactor?
The wiring diagram for a 2 Pole Definite Purpose Contactor is relatively simple. There are three terminals on the contactor: the line side, the load side, and the control side. The Line Side is where the power comes in, the Load Side is where the power goes out, and the Control Side is where the contactor is controlled from. The wiring diagram is as follows:
| Terminal | Description | Wire Color |
|---|---|---|
| L1 | Line Side Terminal 1 | Black |
| L2 | Line Side Terminal 2 | Red |
| T1 | Load Side Terminal 1 | Brown |
| T2 | Load Side Terminal 2 | Orange |
| A1 | Control Side Terminal 1 | White |
| A2 | Control Side Terminal 2 | Black |
4. What are the different types of Definite Purpose Contactors?
Definite Purpose Contactors come in a variety of types, including:
- Single Pole
- Two Pole
- Three Pole
- Four Pole
- Reversing
- Defrost
- Latching
5. What are the applications of a Definite Purpose Contactor?
Definite Purpose Contactors are used in a variety of applications, including:
- HVAC
- Refrigeration
- Heating
- Lighting
- Pumping Systems
- Motors
- Compressors
Conclusion
The wiring diagram for a 2 pole Definite Purpose Contactor is a relatively simple process. The contactor is designed for specific applications and is built to handle specific electrical loads. It is important to follow the wiring diagram carefully to ensure that the contactor is wired correctly and functions properly.
Definite Purpose Contactors are an important component in HVAC, refrigeration, and other commercial and industrial equipment. They are built to handle high electrical loads and provide reliable performance in a variety of applications. Understanding the wiring diagram of a 2 pole Definite Purpose Contactor is an important step in ensuring proper installation and operation of the electrical equipment.
