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Phoenix Contact ST 4-HESI (5x20) Spring-Cage Fuse Terminal Block, 2-Conductor, Black
The Phoenix Contact ST 4-HESI (5x20) is a professional 2-conductor spring-cage fuse terminal block engineered for the secure integration of 5x20 mm glass cartridge fuses. Housed in a durable black casing, this terminal block is designed for mounting on standard NS 35 DIN rails, making it an essential component for industrial control cabinets and automation systems. It supports a wide range of wire cross-sections from 0.08 to 6 mm², ensuring versatility and reliable electrical connectivity in demanding environments.
The terminal block features an extremely compact design that optimizes space within crowded control panels, allowing for higher component density. The integrated spring-cage connection technology facilitates rapid and vibration-resistant wiring, significantly reducing installation time. Furthermore, the inclusion of test connections on both sides of the safety lever allows for convenient and safe circuit diagnostics without the need to disconnect the wiring.
This terminal block is specifically designed for 5x20 mm glass fuses and is not compatible with other fuse sizes or types. It is intended for use in controlled industrial environments and may not be suitable for applications exposed to extreme outdoor elements without additional protective enclosures.
To install, snap the terminal block onto a standard NS 35 DIN rail. Insert your wires into the spring-cage terminals by pressing the actuation point to open the clamp, then release to secure the connection. To install or replace a fuse, lift the safety lever, insert the 5x20 mm glass fuse into the holder, and close the lever firmly to complete the circuit.
Always ensure the power is disconnected before installing or replacing fuses to prevent electrical shock. Regularly inspect the safety lever and spring-cage connections during routine maintenance to ensure optimal performance and safety.
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