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TP232 RS-232 Serial Surge Protector

  • Two metal mounting brackets
  • Three stages of protection: Gas discharge tube, series resistor and transient voltage suppressor (TVS)
  • Two terminal posts for ground
  • RS-232 high energy surge protector
  • Terminal blocks for transmit, receive, request to send, clear to send and signal ground
  • Safe for use with computers and PLCs
  • Also works with RS-485, RS-422 and 20 mA
  • Indicators
  • Remote displays
  • Printers
  • Computers
  • PLC


Some approval documents are available to view by clicking the icons below.

CE Mark

WARNING: Cancer and Reproductive Harm California Proposition 65

The TP232 RS-232 high energy surge protector is safe to use with computers and PLCs. This device offers three stages of protection using different technologies for optimal surge protection.

Clamping Voltage (Stage One):
72 V DC minimum, 108 V DC maximum

Series Resistance (Stage Two):
2.7 ohm

Clamping Voltage (Stage Three):
14.3 V minimum, 15.7 V maximum


Operating Range
0 °F to 122 °F (-18 °C to 50 °C)

Clamping Time:
Less than 5 × 10-9 seconds

Five-position terminal blocks


(L × W × H)
Approximately 4.5 × 3.3 × 1.8 in 

CE marked

One-year limited

Resources / Downloads

Title Download Email
TP232 RS-232 Catalog Page Download Email

Title Version Revision Download Email Category Archived
TP232 RS-232 Surge Protector Installation Guide Download Email Junction Boxes No


Part # Description List Price Cart
69201 RS232 Protection,TP232 3-Stage Transient Serial Protection - Gas Discharge, Series Resistor, and TVS

List Price: $187.00


Part # Description List Price Cart
17778 Ground Strap,12in Tinned Copper Braid

List Price: $19.00

17781 Ground Strap,24in Tinned Copper Braid

List Price: $21.00

69516 LIT,Manual TP232 Installation Guide

List Price: $6.00

Replacement Parts

Replacement parts can only be purchased through trained and authorized dealers. You must be logged in as a dealer to view any available replacement parts.

To locate a dealer in your area, please call us at 1-800-472-6703 or fill out a request online.

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