LCA110LSTR

Solid State Relays

A solid state relay (SSR) is a non-mechanical electronic relay that is used to switch a load on and off with an electrical signal. SSRs are gaining in popularity due to their ability to operate reliably without contact wear, their small form factor, their resistance to shock and vibration, and their low power consumption.

The LCA110LSTR, manufactured by Omron Electronic Components, is a type of solid state relay that is designed for use with high-power loads. It is used in applications such as motor control, HVAC systems, and lighting control.

Application Field and Working Principle

The LCA110LSTR is a 3-phase hybrid SSR relay with an internal power transistor that allows it to safely switch AC loads up to 150 amps. This makes it an ideal solution for applications that require switching higher loads, such as industrial motor control systems. The relay is also designed with safety in mind as it has built-in overcurrent protection, overvoltage protection, and over temperature protection to ensure safe operation in a variety of environments.

The LCA110LSTR also features a zero-crossing circuit for reliable switching of inductive loads. This means that the contactor closes when the current is close to zero volts, which reduces mechanical stress on the load and improves the life expectancy of the SSR. It also has a light-load feature that prevents unnecessary energy consumption when the load is switched off.

The LCA110LSTR is operated by an input signal of either 5 Vdc or 10 Vdc. This signal is read by the input circuit, which in turn activates the output circuit, which then switches the load on or off. The output circuit utilizes a power transistor to control high-current AC loads, and it can operate on either AC or DC power sources.

Overall, the LCA110LSTR is a versatile solid state relay that is designed to switch high-power AC and DC loads. Its safety features and zero-crossing circuit make it an ideal solution for use in a variety of industrial applications.