TEL50B

&

TEL50E

1

05049.R3 11/03

www.protekdevices.com

PBX LOW VOLTAGE TELEPHONE PROTECTOR

Only One Name Means ProTek’Tion™

APPLICATIONS

✔ Telcom Terminal Equipment

✔ Data/Telcom Interfaces

✔ Dedicated Fax & Modem

IEC COMPATIBILITY (EN61000-4)

✔ 61000-4-2 (ESD): Air - 15kV, Contact - 8kV

✔ 61000-4-4 (EFT): 40A - 5/50ns

✔ 61000-4-5 (Surge): 8/20µs - 95A, Level 4 (Line-Gnd) & 48A, Level 4 (Line-Line)

FEATURES

✔ Designed for ±50 Volt (Peak) Telephone Lines

✔ 4 Wire, Line-to-Ground Protection

✔ Permanent Two-Stage Protection

✔ Subnanosecond Response Time

✔ Automatic Reset - Does Not Interrupt Service

✔ Effective Against Lightning, Inductive Switching and ESD

MECHANICAL CHARACTERISTICS

✔ Weight: TEL50B - 28 grams & TEL50E - 142 grams (Approximate)

✔ Flammability Rating UL 94V-0

✔ Device Marking:

Case - Logo, Terminal Designations & Part Number

Board - Logo, Date Code & Part Number

DESCRIPTION

The TEL50B/E is a two-stage transient voltage protector that provides primary and

secondary protection against lightning, inductive switching and electrostatic discharge

(ESD) transient threats. The first stage diverts the transient current through the

ground terminal return path and the second stage clamps the voltage to a safe level

without interruption of service.

The TEL50B/E is designed to protect telcom lines from common mode (line-to-

ground) transients. There are four (4) independent lines referenced to the ground

terminals.

TEL50E

TEL50B