Core function positioning: GE CL09A300M is a three-pole IEC contactor with CL series frame size m, which is used for electrical on-off control of industrial three-phase loads. The contactor itself does not contain a fixed coil voltage, and the control voltage needs to be determined by the suffix model or independent coil selection.Contactor body function
CL09A300M is a three-pole contactor, and the main contact is used to connect and disconnect the three-phase power supply circuit. According to the spare parts channel data, the rated working current of AC-3 is 95A (under the condition of 400 V), and the rated power of AC-3 is 45 kW. AC-1 rated current is 140 A.
The contactor supports DIN rail clamping or screw fixing installation, and the main circuit adopts cable clamp connection. The standard configuration includes a normally open base auxiliary contact, and an auxiliary contact block or overload relay can be added.
Functional role of LB4AS coil
LB4AS is the replacement coil of the contactor with CL frame size M, which is suitable for the whole series from CL06A300M to CL10A300M. Its voltage specification is 220 V, 50 Hz/240 V, 60 Hz, which is used to provide excitation for the electromagnetic mechanism of the contactor and drive the armature to attract so as to close the main contact.
The functional path of the coil in the contactor is: the control circuit is energized → the coil is excited to generate electromagnetic force → the armature overcomes the reaction force and the spring is attracted → the main contact is closed to connect the load circuit. When the control circuit is powered off, the coil is demagnetized, the armature is released under the action of the spring, and the main contact is broken.
Key points of coil voltage identification
The coil voltage of GE CL series contactor is not marked on the side label of the contactor. The side label shows the rated working voltage, and the coil voltage is only marked between terminal A1 and terminal A2 at the top of the contactor. If the coil specification is judged only by the contactor main body model during maintenance and replacement, it is easy to make a selection error. LB4AS itself has been marked as OBSOLETE, and the inventory parts in circulation in the market need to have their insulation performance and pull-in characteristics verified.
