Find HS Code and trade information for 4 way relay module

4-Way Relay Module

A 4-way relay module is an electronic component used to control up to four separate circuits using a low-voltage signal. It acts as an electrically operated switch, allowing a microcontroller, sensor, or other low-power device to switch higher-voltage or higher-current circuits on or off.

Material Composition:

• Relays: Typically utilize electromagnetic relays as the core switching component. These relays consist of a coil, an armature, and contacts. Commonly, these are SPDT (Single Pole Double Throw) or SPST (Single Pole Single Throw) relays.
• PCB (Printed Circuit Board): The relays are mounted on a PCB, providing electrical connections and mechanical support. FR-4 is a common PCB material.
• Control Circuitry: Includes components like transistors, resistors, and diodes to interface the low-voltage control signal with the relay coils. Often includes pull-down resistors to ensure a defined state when the control signal is not active.
• Terminal Blocks: Provide screw terminals for easy connection of input control signals and output loads.
• Housing/Enclosure: Typically made of plastic to provide electrical isolation and protection.
• Status Indicators: Many modules include LEDs to indicate the relay status (e.g., relay energized or de-energized).

Purpose:

The primary purpose of a 4-way relay module is to provide electrical isolation between a low-voltage control circuit and a higher-voltage/higher-current load circuit. This protects the control circuitry from damage and allows for control of a wide range of devices.

Function:

• Electrical Isolation: The relay coil and contacts are electrically isolated from each other, preventing current flow between the control circuit and the load circuit unless the relay is activated.
• Switching: When a low-voltage signal is applied to the control input of a specific relay channel, the corresponding relay is energized. This closes or opens the contacts, connecting or disconnecting the load circuit.
• Amplification: A small control signal can control a larger load, effectively amplifying the signal.

Usage Scenarios:

• Home Automation: Controlling lights, fans, heaters, and other appliances.
• Robotics: Controlling motors, solenoids, and other actuators.
• Industrial Control: Controlling pumps, valves, and other industrial equipment.
• IoT (Internet of Things) Projects: Remote control of devices over a network.
• Automotive Applications: Controlling lights, horns, and other vehicle components.
• Security Systems: Controlling alarms, locks, and other security devices.

Common Types:

• Single Pole Double Throw (SPDT): Each relay has a common terminal, a normally open (NO) terminal, and a normally closed (NC) terminal. Allows switching between two circuits.
• Single Pole Single Throw (SPST): Each relay has a common terminal and a normally open (NO) terminal. Simply switches a circuit on or off.
• Voltage Compatibility: Modules are available with different input voltage levels (e.g., 5V, 12V, 24V) to match the control circuitry.
• Current Capacity: Relays have a maximum current rating. Modules are designed with relays suitable for the intended load current. Common ratings include 5A, 10A, 20A, and 30A.
• With/Without Optocoupler Isolation: Some modules include optocouplers to provide additional electrical isolation between the control signal and the relay coil. This is important for safety and noise immunity.
• Solid State Relay (SSR) Modules: While less common as a 4-way module, SSRs provide faster switching speeds and longer lifespan compared to electromechanical relays.
• DIN Rail Mount Modules: Designed for easy mounting on standard DIN rails in control panels.

Based on the provided information, the following HS codes may be relevant to a 4-way relay module:

• 8536410020: This HS code covers electrical apparatus for switching or protecting electrical circuits, or for making connections to or in electrical circuits (for example, switches, relays, fuses, surge suppressors, plugs, sockets, lamp-holders and other connectors, junction boxes), for a voltage not exceeding 1,000 V; connectors for optical fibers, optical fiber bundles or cables: Relays: For a voltage not exceeding 60 V. A 4-way relay module falls under the category of relays and, depending on its voltage specification, may be classified here. The tax rate details are: Basic tariff: 2.7%, Additional tariff: 25.0%, Additional tariff after 2025.4.2: 30.0%, Total tariff: 57.7%.
• 8536490080: This HS code covers electrical apparatus for switching or protecting electrical circuits, or for making connections to or in electrical circuits (for example, switches, relays, fuses, surge suppressors, plugs, sockets, lamp-holders and other connectors, junction boxes), for a voltage not exceeding 1,000 V; connectors for optical fibers, optical fiber bundles or cables: Relays: Other Other: Other: Other. If the 4-way relay module does not fall under the 60V specification, it may be classified here. The tax rate details are: Basic tariff: 2.7%, Additional tariff: 25.0%, Additional tariff after 2025.4.2: 30.0%, Total tariff: 57.7%.

Important Considerations:

• Voltage Specification: The voltage of the 4-way relay module is critical for correct classification. If the voltage is 60V or less, use HS code 8536410020. If it exceeds 60V but remains at or below 1,000V, use HS code 8536490080.
• Electromechanical Relays: HS code 8536410020 specifically mentions "Electromechanical" relays. Ensure the module utilizes this technology.