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420E225 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Protek Devices - (420E212 - 420E260) DUAL 4-20mA CONTROL LOOP PROTECTOR

شماره قطعه 420E225
شرح مفصل (420E212 - 420E260) DUAL 4-20mA CONTROL LOOP PROTECTOR
تولید کننده Protek Devices 
آرم Protek Devices 


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420E225 شرح
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 www.protekdevices.com

قانون اساسیصفحه 3
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