APC ProtectNet Standalone Surge Protector for Serial RS232 Lines

Overview

The APC PS9-DTE is a surge protector designed specifically for RS232 serial lines, providing essential protection for communication circuits against voltage spikes. It installs directly into a DB-9 port and safeguards one to nine data lines by reacting within 1 nanosecond to divert surge currents up to 0.2 kiloampere. This compact device is ideal for environments where serial connections remain critical, such as laboratories, industrial control systems, and point-of-sale terminals.

Key features

• Protects RS232 serial communication lines by blocking voltage surges that could damage connected equipment
• Supports up to nine data lines, ensuring comprehensive coverage for standard DB-9 serial connections
• Ultra-fast response time of 1 nanosecond minimizes the risk of transient damage
• Handles peak surge currents up to 0.2 kiloampere, effectively diverting harmful spikes to ground
• Includes both male and female DB-9 connectors for seamless inline installation without additional adapters
• Compact and lightweight housing fits easily into tight spaces, including workstations and service carts
• Meets UL 497B safety standards, providing compliance assurance for regulated facilities
• Requires no external power or rack mounting, simplifying deployment in various settings
• Operates reliably across a wide temperature range from 5 to 113 degrees Fahrenheit
• Backed by a limited lifetime warranty and accompanied by a user manual for straightforward setup

Key specs

• Supported data lines: 1 to 9
• Surge response time: 1 nanosecond
• Peak surge current capacity: 0.2 kiloampere
• Connector type: DB-9 male and female
• Dimensions: 2.99 x 1.42 x 0.59 inches
• Operating temperature range: 5 to 113 °F
• Compliance: UL 497B surge protection standard
• Power requirements: none (passive device)

Connectivity and compatibility

This surge protector is designed to fit directly into standard DB-9 serial ports, making it compatible with a wide range of devices that use RS232 communication. It works well with laboratory instruments, building automation controllers, point-of-sale systems, and legacy industrial equipment that rely on serial data transmission. The included male and female connectors allow it to be inserted inline without modifying existing cables or setups.

Installation and setup

Installation is straightforward and requires no external power source or rack mounting. The compact size and lightweight design allow it to be placed at a workstation, inside a service cart, or in the field without disrupting current cabling arrangements. The user manual provides clear instructions to ensure proper connection and optimal protection.

Ideal uses and environments

This surge protector is well suited to environments where RS232 serial communication remains essential and equipment protection is critical. It fits naturally in laboratory settings, industrial automation, retail point-of-sale terminals, and any location where legacy serial devices are still in operation. Its fast response and compliance with safety standards make it a reliable choice for protecting sensitive hardware from electrical surges.