Product highlights Complete set: 1 box contains 50 pluggable screw terminal blocks (5.0 mm pitch) — twenty 2pin, twenty 3pin and ten 4pin units for flexible PCB wiring solutions. Compact pitch and compatibility: 5.0 mm pitch pluggable screw terminals designed to work with 2.54 mm (0.1 in) header devices, compatible with boards such as Arduino A+, B+, and 3B. Reliable electrical performance: PCBmount terminals rated up to 150 V and 6 A, suitable for continuous operation in control, data acquisition, and signal transmission applications. Easy, toollight connections: screwclamp mechanism provides fast, secure wire insertion and removal without soldering or special tools, simplifying installation and maintenance. Wide wire range: accepts 18 AWG to 26 AWG wires for secure contact across common cable sizes and types. Key benefits — why this product helps Saves time: pluggable design lets you connect or disconnect circuits quickly during assembly, testing, or field service without desoldering. Reduces errors and rework: screwclamp terminals deliver firm mechanical contact and stable conductivity, reducing intermittent faults from loose or poorly crimped connections. Increases versatility: multiple pincounts in one box support a variety of board layouts and wiring needs, minimizing extra purchases. Durable in typical industrial and hobby environments: rated voltage/current and PCB mount design support longterm, continuous use in control and signal systems. Features and function Pluggable screw terminal blocks for PCB mounting — plugin convenience with screwclamp retention. 5.0 mm pitch for compact wiring while remaining compatible with standard 2.54 mm (0.1 in) header arrangements commonly used on Arduino and similar boards. Supports up to 150 V and 6 A for power and signal lines within those limits. Wire gauge compatibility: 18–26 AWG for flexible use with stranded and solid conductors. No soldering required for most connections; screws permit rapid installation and serviceability. Practical use scenarios Prototype and development: quickly wire and rewire sensors, peripherals, and modules on Arduino and singleboard computer projects during iterative testing. Industrial control panels: mount to PCBs for secure connections of control signals, sensors, and lowpower actuators in PLC or relaybased systems. Data acquisition and signal routing: use in DAQ frontends and instrument interfaces where reliable signal integrity and easy maintenance are required. Technical specifications (as provided) Pitch: 5.0 mm Quantity: 50 pieces per box (20 × 2pin, 20 × 3pin, 10 × 4pin) Rated voltage: up to 150 V Rated current: up to 6 A Wire compatibility: 18 AWG–26 AWG Mounting: PCBmount, pluggable screw terminal Compatibility: works with 2.54 mm (0.1 in) header devices (e.g., Arduino A+, B+, 3B) What to expect in use Straightforward assembly: insert the mating header into the PCB, plug the terminal block, and secure wires with the screws. Quick servicing: unplugging the terminal blocks during upgrades or travel setups is fast and does not require desoldering. Stable connections under continuous operation when used within the rated voltage/current and appropriate wire sizes. This kit offers a practical, reliable set of pluggable screw terminal blocks that simplify PCB wiring, support a common range of wire sizes, and provide rated performance for many hobbyist and light industrial applications.