The GE CR306 magnetic starter is used to start and stop motor loads such as fans, pumps, and compressors. It consists of a contactor and overload relay, housed in a rugged NEMA 1 enclosure, with wiring connections that are easily accessible. In this article, we will discuss the wiring diagram for the GE CR306 magnetic starter and provide some frequently asked questions to help you understand its functionality.
Wiring Diagram
The wiring diagram for the GE CR306 magnetic starter is as follows:
| Terminal | Connection |
|---|---|
| L1 | Power input line 1 |
| L2 | Power input line 2 |
| T1 | Motor load line 1 |
| T2 | Motor load line 2 |
| A1 | Control circuit line 1 |
| A2 | Control circuit line 2 |
| 96 | Overload reset button |
| 97 | Overload trip indicator light |
| 98 | Contact closed indicator light |
| 99 | Contact open indicator light |
It is important to note that the wiring diagram for the GE CR306 magnetic starter may vary depending on the application and motor load requirements. Always refer to the manufacturer’s documentation for specific wiring information.
FAQ
What is a magnetic starter?
A magnetic starter is an electromechanical device used to start and stop motor loads. It consists of a contactor and overload relay, housed in an enclosure, with wiring connections that are easily accessible.
What is the purpose of the overload relay?
The overload relay is designed to protect the motor from damage due to overloading, excessive current draw, or overheating. It senses the current flowing through the motor and trips the contactor if the current exceeds the set limit.
Can the GE CR306 magnetic starter be used for both single-phase and three-phase motors?
Yes, the GE CR306 magnetic starter can be used for both single-phase and three-phase motors. The wiring diagram may vary depending on the application and motor load requirements.
What is the difference between a magnetic starter and a direct-on-line starter?
A direct-on-line starter is a simple electromechanical device used to start and stop motor loads. It consists of a contactor and overload relay, with wiring connections that are easily accessible. Unlike a magnetic starter, a direct-on-line starter does not have a built-in starter motor or soft starter.
How do I wire a GE CR306 magnetic starter?
To wire a GE CR306 magnetic starter, follow these steps:
- Disconnect power to the motor load and control circuit.
- Identify the power input lines and motor load lines.
- Connect the power input lines to L1 and L2 terminals on the magnetic starter.
- Connect the motor load lines to T1 and T2 terminals on the magnetic starter.
- Connect the control circuit lines to A1 and A2 terminals on the magnetic starter.
- Connect the overload reset button, overload trip indicator light, contact closed indicator light, and contact open indicator light to their respective terminals on the magnetic starter.
- Turn on power to the motor load and control circuit.
Always refer to the manufacturer’s documentation for specific wiring information.
What is the difference between a NEMA 1 and NEMA 3R enclosure?
A NEMA 1 enclosure is designed for indoor use, and provides protection against dust, dirt, and dripping water. A NEMA 3R enclosure is designed for outdoor use, and provides protection against rain, sleet, and snow.
Conclusion
The GE CR306 magnetic starter is a reliable and versatile device used to start and stop motor loads. The wiring diagram may vary depending on the application and motor load requirements, so always refer to the manufacturer’s documentation for specific wiring information. Additionally, the overload relay is designed to protect the motor from damage due to overloading, excessive current draw, or overheating. Follow proper wiring procedures to ensure the safety and functionality of the device.
