Data and signal lines protector. Maximum signal 28V peak line to line and each line to ground. In-line connection din rail mount. Clamping voltage starts at 30V. 5 stages of protection provided. Maximum surge current 30 KA, 8/20 µs wave. Either polarity of surge equally clamped. Temperature -55° to 80° C ambient. Note : Model LPC 11889-25 is for signal levels to 28V peak. The LPC 11889-series are available for data and signal levels from 5V to 240V peak. Inquire for proper "dash" number for your application.