PTTB4 Plug-in Spring Terminal Blocks

PTTB4 Plug-in Spring Terminal Blocks are an important model of PT Series Terminal Blocks, combining the practical strengths of Plug-in Terminal Blocks and Spring Terminal Blocks. It adopts tool-free push-in spring connection design, allowing direct wire plugging and unplugging without screwdrivers, which greatly simplifies field wiring installation, circuit adjustment and daily maintenance work.   Made of high flame-retardant insulating housing and high-purity brass conductive parts, this Reliable Terminal Blocks features superior insulation, high temperature resistance and oxidation resistance. The internal elastic spring structure clamps wires tightly, effectively preventing loose contact caused by vibration and ensuring long-term stable and safe circuit conduction.   With compact structure, standard DIN rail mounting size and good modular compatibility, it saves installation space and supports dense wiring arrangement. Widely applied in electrical control cabinets, industrial autom…