What is difference between AC1 and AC3 contactor?

What is difference between AC1 and AC3 contactor?

The difference between AC1 and AC3 contactors is AC1 contactors are used for general purpose resistive loads but AC3 contactors are used for high inductive, squirrel cage motor switching. The rating of AC3 is lower than AC1.

What is AC4 contactor?

IEC contactor selection is based on the percent that jogging and plugging (AC4) is of non-jogging and non-plugging (AC3) conditions in the duty cycle and desired contact (electrical) life.

What is AC1 and AC3 duty?

The difference between AC1 and AC3 contactors is AC1 contactor is used for less inductive loads such as resistive loads (the power factor of the load is near about 1) but AC3 duty contactors are used for high inductive, squirrel cage motors which will be off during the motor is running condition.

What is AC1 AC2?

AC1 – These type of contactors are used for Non-inductive or slightly inductive loads they are used for Heaters which are resistive loads. AC2 – These type of contactors are used in Starting of slip-ring motors.

What size contactor do I need?

Size of Main Contactor = 100%X Full Load Current (Line). Size of Main Contactor = 100%x6 = 6 Amp.

What is AC 23 duty?

AC-23. Switching of motor loads or other highly inductive loads.

What are AC 3 contactors?

AC-3 – This category applies to squirrel cage motors with breaking during normal running of the motor. On closing, the contactor makes the inrush current, which is about 5 to 7 times the rated full load current of the motor. On opening, the contactor breaks the rated full load current of the motor.

What does ac1 mean on contactors?

AC-1 – This category applies to all AC loads where the power factor is more than 0.95. These are primarily non-inductive or slightly inductive loads, such as resistive loads. Breaking the arc remains easy with minimal arcing and contact wear.

What is AC-23 duty?

How do I choose an AC contactor?

Power contactors have 3 poles or 4 poles versions. You should select the suitable contactor according to the number of phases of the load. For example, if you want to control a 3 phase motor, you should use 3 pole contactor. If you want to disconnect the neutral, your choice should be 4 pole version.