HC4E-L-AC115V

Signal relays are usually used to switch signals between circuits that operate at different voltage levels. A common signal relay is the HC4E-L-AC115V, a latching model with two AC power circuits. It is used for applications that require momentary operation, but also long-term operation with multiple switching cycles. Here, we will be discussing its application field and working principle.

Application Field

The HC4E-L-AC115V signal relay is used in two primary application fields – industrial automation and residential heating/cooling. In industrial automation, it is used to control movement of automated industrial equipment such as material handling robots. In the home, it is used to regulate the power going to HVAC systems, providing reliable and safe switching when needed. The HC4E-L-AC115V meets the higher power switching requirements of both application fields.

Working Principle

The HC4E-L-AC115V signal relay is a latching relay, meaning it requires a single pulse of current to switch on or off. The most common type of latching relay is the solenoid type, which is used in this case. The relay\'s coil is energized to create a magnetic field which in turn moves the plunger in the relay to switch its contacts. When the contact is switched, the current is cut off and the plunger relocates itself to the position it was in before, ensuring that the contacts stay in place until the current is reactivated. The maximum current the HC4E-L-AC115V can handle is 2 Amps, so it is not suitable for applications with higher current requirements.

Overview

The HC4E-L-AC115V signal relay is used for applications that require higher power switching between two circuits. It is widely used in both industrial automation and residential heating/cooling applications. It operates on a single pulse of current and is capable of handling up to 2 Amps of current. This makes it suitable for most switching requirements and ensures reliable, long-term operation.