Square D Lighting Contactor Class 8903 Wiring Diagram

The Square D Lighting Contactor Class 8903 is a heavy-duty, three-pole contactor designed for use in industrial and commercial applications. It is rated for 240 volts AC and 50 amps, and it has a contact rating of 10 HP. The contactor is equipped with a built-in thermal overload relay, which protects the contactor from overheating.

The Square D Lighting Contactor Class 8903 is typically used to control the starting and stopping of motors in industrial and commercial applications. It can also be used to control the lighting in a building.

The following is a wiring diagram for the Square D Lighting Contactor Class 8903:

The following is a description of the wiring diagram:

L1

and

L2

are the line terminals. These terminals are connected to the power source. *

T1

T2

, and

T3

are the load terminals. These terminals are connected to the motor. *

M

is the common terminal. This terminal is connected to the load and the neutral. *

NO

and

NC

are the normally open and normally closed contacts. These contacts are used to control the motor. *

O

is the overload relay. This relay protects the contactor from overheating.

To install the Square D Lighting Contactor Class 8903, follow these steps:

1. Connect the line terminals (

L1

and

L2

) to the power source. 2. Connect the load terminals (

T1

T2

, and

T3

) to the motor. 3. Connect the common terminal (

M

) to the load and the neutral. 4. Connect the normally open (

NO

) and normally closed (

NC

) contacts to the control circuit. 5. Connect the overload relay (

O

) to the control circuit.

Once the Square D Lighting Contactor Class 8903 is installed, it can be used to control the starting and stopping of motors in industrial and commercial applications. It can also be used to control the lighting in a building.

Square D 8903spo11v02 Province Electric Supply