Jul 16, 2023

pluggable terminal blocks connect wires to the terminal blocks

Terminal blocks plug into a mating socket, with a patented push-in-design for connecting wires to the blocks.

Pluggable Terminal Blocks from Dinkle International are a series of products with a push-in-design for connecting wires to the terminal blocks.

A pluggable terminal block is composed of a plug and a mating socket. The socket is usually attached to a printed circuit board through pins. The plug fits into the socket, and the wires connect to the socket via Dinkle’s patented push-in-design. This design improves upon traditional screw terminals in terms of efficiency, ease of use, and space savings.

Screw terminals take time to tighten properly, and there is always the danger of under torqueing and loose connections, or over torqueing and stripped screw threads. By contrast, wires connected using this push-in-design technology assure a secure connection, with about 75% less time required per wire installation.

Connecting a solid wire with push-in-design takes only 3.6 seconds, compared to 13.5 seconds for a screw connection. A flexible wire takes just 4.1 seconds to connect, while a screw terminal takes 14.4 seconds. A flexible wire with a ferrule takes only 3.7 seconds to connect, compared to 13.2 seconds for a screw terminal.

Pluggable terminal blocks are available in a wide variety of sizes and ratings. Pitch varies from 2.54 mm to 6.35 mm, with wire ranges from 30-16 to 24-12 AWG. Current ratings are 5 amps to 8 amps at 150 VAC, 8 amps to 16 amps at 300 VAC, and 20 amps at 600 VAC. Connection methods are V-type spring (not patented), or patented S-Cage single, double, and rail type. Value-added customization services include label printing, and supplying blocks in assorted color combinations.

An LED at each connection point is on when current is flowing through the wire, with LED light pipes integral to the terminal block assemblies used to ensure each LED is clearly visible. This indication provides quick visual confirmation of active connections and is useful for troubleshooting.

Mini type pluggable terminal blocks include the 0225, 0226, and 0227 series. The 0225 series has an ultra-thin housing with a 7mm height, able to accommodate a broad cross section of 1.5 mm² wire. Various selections of mounting methods contribute to a vibration proof and secure connection. These terminal blocks are suited to installation within PLCs, I/O modules, signal panels, etc.

The series 150 pluggable terminal blocks are rated at 16 amps at 300 VAC and 20 amps at 600 VAC. These high-current terminal blocks are resistant to elevated levels of vibration, with a stopper mechanism to avoid overloading. An innovative smart clip facilitates quick plugging and unplugging. The terminal blocks have an ultra-mini housing with a height of 13.80mm. Typical applications include motion control components such as servo and stepper drives and amplifiers.

The series 0181, 0156, and 0159 pluggable terminal blocks have a bi-level compact structure to provide space savings and cost effectiveness. The 0156 and 0159 series provide for different printed circuit board layouts to fulfill various market demands and applications. Assorted options of plugging/unplugging methods are available, including lock and release, smart clip, and screw flange.

Dinkle’s products have various safety approvals including UL, CUL, CSA, VDE, and GB. The material used for manufacturing is compliant with RoHS and REACH environment standards set by EU.