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Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)

FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com   •   E-mail: [email protected]

Customer 

Support 

Information

 

February 2010 

MT1000A-85-R4

BLACK BOX

®

Get convenient avalanche diode protection  

for your DB15 (15-wire) connections.

RS-422/423/485 (DB15 15-Wire)

In-Line Surge Protector, RS-422/423/485 (DB15 15-Wire)

SP508A

For installation instructions, turn this page over…

Overview

This model protects RS-422 interfaces that use a DB15  
connection.

What’s included

• In-Line Surge Protector

• Specification sheet

Specifications

Application: 

RS-422, RS-423, RS-485

Ground Wire:

 Yes

Maximum Shunt Capacitance:

 <30 pF

Peak Pulse Current:

 132 amps

Pins Protected:

 All

Protection Type:

 Avalanche diode technology

Response Time:

 <5 ns

Standard Clamping Voltage:

 7.5 volts

Connectors:

 (1) DB15 M, (1) DB15 F

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