2P18U3S/46

2P18U3S/46 is a magnetically actuated on/off switch. It is commonly used in many applications where a relaying or switching function is required.

The magnetic switch itself consists of an electromagnet which, when energized, attracts a North-polarized steel plate, thereby closing the contacts. De-energizing the electromagnet releases the plate, thus opening the contacts.

The electric circuit is assembled with a two-pole double-throw switch with a common terminal. A pole is connected to the electric power source, and the other to the electromagnet; the two throw terminals are connected to the relay contacts. When the power is on, electric current passes through the two respective poles of the switch and energizes the electromagnet. This in turn attracts the North-polarized steel plate, thus closing the contacts of the electromagnet.

The operation is reversed when the power is cut off. The magnetic field of the electromagnet decreases, releasing the plate, thus opening the contacts of the electromagnet. The disharmony between poles and the mutual repulsion of the North-polarized plate for the electromagnet causes the plate to not only open the contacts, but also disengage completely.

2P18U3S/46 is designed to handle a current of up to 240 Volts AC and can be used in a variety of applications, such as pulsar timing, motor control, power switching, industrial process control, and alarm systems. It is also useful for remote control systems, where proper switches are required for efficient and safe transmission of signals to the control devices.

Due to its low cost and versatility, the magnetically actuated 2P18U3S/46 switch is a popular choice for many industrial applications. It is lightweight, has a long operating life, operates in a wide temperature range, and requires very little maintenance.