Other
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 volts; connectors for optical fibres, optical fibre bundles or cables. > Lamp-holders, plugs and sockets: > Moulded parts: > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 8538.90
Bimetal Blade for Thermal Cutout Switch
A precision bimetal blade designed for thermal cutout switches used in appliances. It bends at a predetermined temperature to separate electrical contacts, preventing overheating and potential fires. Its metallic construction provides reliable mechanical temperature response for motor starters and overload protectors.
8538.90.10Bimetallic Disc for Circuit Breaker Thermal Trip
A snap-action bimetallic disc used for thermal trip mechanisms in thermal-magnetic circuit breakers. It warps mechanically at calibrated temperatures to trip the breaker mechanism and interrupt power. Its two-metal construction provides precise temperature response for overload protection.
8538.90.10Ceramic NTC Thermistor for Switch Overheat Detection
A ceramic NTC thermistor used for overheat detection in automatic circuit breakers and thermal switches. It provides precise temperature monitoring by decreasing resistance as temperature rises, enabling protective action. Its ceramic material is electrically reactive to temperature changes, suitable for motor starters and overload protectors.
8538.90.10Ceramic PTC Disk for Overload Relay Protection
A large ceramic PTC heating disk designed for bimetallic overload relays. It self-heats to trip the relay mechanism when motor current exceeds safe levels, providing both electrical and thermal protection. Its ceramic material reacts to temperature changes, making it suitable for motor starters and overload protectors.
8538.90.10Ceramic PTC Thermistor for Motor Protectors
A positive temperature coefficient (PTC) ceramic thermistor specifically designed for motor overload protectors. It increases resistance dramatically with temperature rise to limit current and protect motors from overheating. Its ceramic material is electrically reactive to temperature, making it ideal for motor starter and overload protector applications.
8538.90.10Ceramic Temperature-Sensitive Resistor for Motor Starter
A PTC ceramic resistor element used in motor starting relays. It provides inrush current limiting by increasing resistance as temperature rises during startup. This dedicated ceramic part is electrically reactive to temperature, making it suitable for motor starters and overload protectors.
8538.90.10Ceramic Thermal Protector Sensor for HVAC Relays
An NTC ceramic sensor for thermal protector relays in HVAC systems. It monitors compressor temperatures and signals relay cutoff via resistance change. Its temperature-electrically reactive ceramic material makes it suitable for motor starters and overload protectors.
8538.90.10Metallic Bimetal Strip for Relay Thermal Protection
A bimetallic strip made of two bonded metallic alloys for thermal snap-action relays. It mechanically deforms when heated to open or close electrical contacts, providing over-temperature protection. Its metallic material is mechanically reactive to temperature, making it suitable for motor starters and overload protectors.
8538.90.10Metallic Shape Memory Alloy Actuator for Switches
A Nitinol shape memory alloy wire actuator for temperature-sensitive switches. It contracts mechanically when reaching activation temperature to operate switch contacts. Its metallic material is mechanically reactive to temperature, making it suitable for motor starters and overload protectors.
8538.90.10Metallic Thermal Fuse Element for Appliance Protectors
A low-melting-point metallic alloy fuse wire for thermal cutouts in household appliances. It melts mechanically at precise temperature thresholds to break circuits during overheat conditions. Its metallic material is mechanically reactive to temperature, making it suitable for motor starters and overload protectors.
8538.90.31ATM Display Driver Printed Circuit Assembly
This printed circuit assembly drives LCD/OLED displays in ATM control panels, handling graphics rendering and touch input processing. It is designed for use in automatic teller machines and falls under this tariff item as a moulded part for use in the manufacture of relays and related devices for voltages not exceeding 60 V.
8538.90.31ATM Keypad Interface Printed Circuit Board
This printed circuit assembly serves as the interface board for ATM keypads, processing transaction inputs and security signals. It is designed for use in automatic teller machines and falls under this tariff item as a moulded part for relays and similar devices for voltages not exceeding 60 V.
8538.90.31Automatic Data Processing PCA for 8537 Boards
This printed circuit assembly manages I/O between units in control panels of automatic data processing machines. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.31Electrical Panel HMI Interface Board
This printed circuit assembly provides touchscreen interface for industrial control panels, with LCD controller, touch digitizer, and communication processor. It enables operator interaction with control systems and falls under this tariff item as a moulded part for relays and similar devices for voltages not exceeding 60 V.
8538.90.31PCA for Word Processor Display Control Panel
This printed circuit assembly handles display driving and user interface signals for word processor control panels. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.31Photocopier Laser Control Printed Circuit Board
This printed circuit board modulates laser diode operation for photocopier control panels, providing raster image processing interface. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.31Photocopier Scanner Motor Control PCA
This printed circuit assembly manages scanner positioning and speed for photocopier control panels. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.31Plotter Servo Control PCA for 8537 Panels
This printed circuit assembly controls stepper and servo motors in plotter control panels, ensuring precise carriage movement. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.31Printed Circuit Assembly for Photocopier Control Board
This printed circuit assembly provides electronic interface and control functions for photocopier control panels. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.31Telephone Base Station Control PCA
This printed circuit assembly manages power and signal control in telephone base station control panels. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.31Word Processor Keyboard Controller PCA
This printed circuit assembly scans and encodes keyboard matrix inputs for word processor control panels. It is designed for use in relays and similar devices for voltages not exceeding 60 V, falling under this tariff item.
8538.90.39Crane Control System Expansion Board
This heavy-duty printed circuit assembly expands hoist and trolley controls in overhead crane systems classified under heading 85.37. It includes encoder interfaces, brake controls, and limit switch monitoring, handling high-current outputs for industrial environments. As a part of a control panel for electrical apparatus, it falls under this tariff item as an 'other' moulded part.
8538.90.39Elevator Control Printed Circuit Assembly
This specialized PCB assembly is designed for elevator controllers under heading 85.37, integrating motor drive circuits, safety interlocks, and floor position sensors. It manages door operations and car movement in compliance with safety standards. As a moulded part for control panels, it is classified under this tariff item.
8538.90.39Fire Alarm Control Panel Interface Module
This printed circuit assembly interfaces smoke detectors and notification appliances with fire alarm control panels of heading 85.37, featuring supervised circuits and power monitoring. It ensures life safety system integrity. As a moulded part for fire alarm control panels, it falls under this tariff item.
8538.90.39Glass-Filled Nylon Distribution Board Spacer
This 30% glass-filled nylon molded spacer maintains precise spacing between busbars in electrical distribution boards of heading 85.37. It provides enhanced mechanical strength and electrical insulation properties. As a moulded part for distribution boards, it is classified under this tariff item.
8538.90.39HVAC Zone Controller Expansion Module
This printed circuit assembly expands input/output capacity of HVAC zone controllers under heading 85.37, with temperature sensor interfaces and damper actuator drivers. It enables multi-zone climate control functionality. As a moulded part for HVAC control panels, it is classified under this tariff item.
8538.90.39Machine Safety PLC I/O Module
This safety-rated printed circuit assembly is designed for machine safety PLCs of heading 85.37, featuring dual-channel inputs, safety relays, and diagnostic circuits compliant with ISO 13849. It monitors emergency stops and safety gates. As a moulded part for safety control panels, it falls under this tariff item.
8538.90.39Nylon Molded Insulator Base for Switchgear Panels
This high-strength nylon molded base plate serves as the insulating mount for busbars and components in low-voltage switchgear panels of heading 85.37. The part ensures electrical isolation and mechanical stability in panels. As a moulded part for switchgear, it falls under this tariff item.
8538.90.39PA66 Molded Terminal Block Divider
This molded polyamide 66 (PA66) divider wall separates live terminals within multi-pole terminal blocks of heading 85.36. It prevents cross-talk and maintains creepage distances per UL requirements. As a moulded part for terminal blocks, it is classified under this tariff item.
8538.90.39PLC Printed Circuit Board Assembly
This printed circuit assembly is designed specifically for programmable logic controllers (PLCs) of heading 85.37, containing microprocessors, memory chips, and I/O interface circuits mounted on a PCB. It provides the core control functions for industrial automation. As a moulded part for PLCs, it is classified under this tariff item.
8538.90.39Programmable Automation Controller Daughterboard
This expansion printed circuit assembly plugs into main PLC boards of heading 85.37, adding analog I/O channels and specialty communication protocols. It extends functionality for specific industrial applications. As a moulded part for PLC control systems, it falls under this tariff item.
8538.90.39SCADA Remote Terminal Unit Processor Board
This industrial processor printed circuit assembly is for RTUs in supervisory control systems of heading 85.37, featuring ruggedized CPU, serial ports, and analog I/O for field data acquisition. It enables remote monitoring of industrial processes. As a moulded part for SCADA control panels, it is classified under this tariff item.
8538.90.39Traffic Signal Controller Interface PCB
This printed circuit assembly interfaces vehicle detectors with traffic signal controllers of heading 85.37, featuring signal conditioning amplifiers and fault detection circuits. It processes inductive loop detector inputs for traffic management. As a moulded part for traffic control panels, it falls under this tariff item.