User Manuals, Instructions and Guides for technoswitch products.

technoswitch ST021DI AC Electric System Surge Protective Device Instruction Manual

Learn how to install and replace the ST021DI and ST381DI AC Electric System Surge Protective Device with this user manual from Technoswitch. This long-life device, with a DIN rail mount modular case, is designed to protect against surges in 230V/50-60Hz and 3-phase systems. Get detailed specifications and instructions for proper installation and cartridge replacement.