General Purpose Relays: An Overview
A general-purpose relay is an electrical switch activated by an electric current. These versatile devices can handle both AC and DC currents and come in two primary configurations: normally open (NO) and normally closed (NC). Here’s how they work:To get more news about
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Activation: When an electric current flows through the relay coil, it generates a magnetic field. This field causes the relay’s switch contacts to change position.
Switching Function: Depending on the relay type, the switch can either open (NO) or close (NC). This action allows you to control various devices, such as motors, lights, fans, and solenoid valves.
Types of General Purpose Relays
Control Panel Relays: These relays typically have 1 to 4 poles and are used for relay sequences or I/O applications in control panels. Examples include MM (K), MK (S), MY, LY, G2R, and G2RV relays.
Built-In Relays: These relays are designed for integration into devices and can carry currents of up to 40 A. They are commonly used to turn ON load power supplies. Examples include G7Z, G7J, and G7X relays.
Work-Saving Relays: These units are used mainly for I/O applications in programmable controllers when downsizing and work efficiency are essential. Examples include G6D-F4B and G6B-4BND relays.
Relays for Special Operations: These are specified for specific applications, such as alternative operation and stepping operation of pumps. Examples include G4Q, G9B, and MYA relays.
Applications of General Purpose Relays
Control Circuits: General purpose relays serve as control circuits in automated machines across production sites. They play a crucial role in relay sequences, ensuring smooth operation.
I/O Relays: Used to relay loads from controllers (e.g., PLCs) and solenoid valves.
Building Automation: Lighting and air conditioning control in buildings.
Infrastructure Support: Traffic management, water supply, and smart meter applications.
Plant Automation: Used in electricity, steel, gas, and other industrial plants.
Factory Automation: Found in manufacturing processes for automobiles, semiconductors, and chemicals.
