420E(2007) Ver la hoja de datos (PDF) - ProTek Devices.

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componentes Descripción

Fabricante

420E
(Rev.:2007)

DUAL 4-20mA CONTROL LOOP PROTECTOR

ProTek Devices. 

420E212

thru

420E260

DUAL 4-20mA CONTROL LOOP PROTECTOR

APPLICATIONS

✔ Security Alarm Systems

✔ Industrial Control & Monitoring Systems

✔ Remote Tech Site Station

✔ Process Control Loops

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)

420E

FEATURES

✔ Designed for 4-20mA Current Loops

✔ Automatic Reset - Does Not Interrupt Service

✔ Permanent Two-Stage Line Pair Protection

✔ Common Mode & Differential Mode Protection

✔ Subnanosecond Response Time

✔ Effective Against Lightning, Inductive Switching and ESD

MECHANICAL CHARACTERISTICS

✔ Weight: 50 grams (Approximate)

✔ Flammability Rating UL 94V-0

✔ Device Marking: Logo, Terminal Designations, Date Code & Part Number

DESCRIPTION

The 420E2 series is a two stage transient voltage protector providing 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 420E2 series is designed to protect 4-20mA analog control loops from differential and

common mode transients. Terminals 1 and 2 are designed as the line pairs for both the line and

equipment side of the protector. A transient voltage suppressor is internally connected across

each line pair for differential mode protection. Each line pair is referenced to ground.

This product can also be used on telephone, signal/data lines, security timing and control

interface circuits.

05053.R4 7/04

1

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