Limit switch LK-2 W0-59-391022

Limit switch – a reliable automation component

This limit switch, catalog number W0-59-391022 (LK-2), is a key component in control and safety systems. It is used to precisely detect the position of moving elements in machines and devices, enabling automatic triggering of specific functions. Its versatility makes it suitable for both simple applications and advanced industrial automation systems.

Construction and application

The LK-2 switch is a changeover model, meaning it has both a normally closed and a normally open contact. The operation is based on the mechanical action of a plunger on the contact, which causes it to switch. The construction using a snap-action contact system ensures automatic return to the initial position after the force acting on the plunger is released. This makes it ideal for cyclic operations where precision and reliability are key. It can be used in control, monitoring and measurement circuits for direct and alternating current.

Parameters and user features

The LK-2 switch is characterized by high technical parameters ensuring safe and long-lasting operation. The rated insulation voltage is 500V, and the rated impulse withstand voltage is 6kV. The rated continuous current is 16A, and the switching currents AC15 – 4A and DC13 – 0.5A. It is worth noting the high mechanical durability of 3x10⁶ cycles and the switching durability AC15 (Ue=500V Ie=4A) – 7x10⁵ and DC13 (Ue=220V Ie=0.5A) – 1x10⁵. The force required to switch is a maximum of 14.7 ± 2.3 N. The device meets the requirements of the PN-EN 60947-5-1 standard.

Additionally:

• The cross-sections of stranded wires are in the range of 1.0 to 2.5 mm², and solid wires from 1.5 to 4 mm².

• The ambient operating temperature is from -25 to +40°C.

• The degree of protection is IP00 – which means there is no protection against the ingress of solids or water.

• The rated switching frequency per hour is 300 op/h

• The withstand short-circuit current is as high as 1000A

These parameters guarantee reliable operation even in demanding industrial conditions. Standard design makes it suitable for operation in a moderate climate with relative air humidity up to 90% at a temperature of +313K or +293K (depending on the climate).