Siemens – 6ES7 193-0CD40-0XA0 – ET200B TB8 Terminal Block 4‑Wire Spring Terminal

The Siemens 6ES7 193‑0CD40‑0XA0 is a TB8 terminal block designed for ET 200B analog electronic modules that require 4-wire spring-loaded connections. Widely used in Simatic DP rail-mounted I/O systems, it provides a neat interface for signal wiring. This block has been discontinued as of October 1, 2017, and is no longer available from Siemens Factory but may be sourced from spare parts distributors.  

Key Features:

• Model: 6ES7 193‑0CD40‑0XA0 (TB8 terminal block)

• Connection: 4-wire spring-loaded terminals, ideal for analog signals  

• Width: 160 mm – fits standard ET 200B terminal configurations  

• Supply Voltage (internal logic): 24 V DC (18.5–30 V), 70–100 mA consumption  

• Protection: IP20 rated in compliance with EN 60529  

• Ambient Range: Operation from 0 °C to +60 °C  

• Material & Weight: Approximately 0.6 kg; panel mount rail compatible