420E212_13 Datasheet, PDF (1/4 Pages) Protek Devices – Dual 4-20mA CONTROL LOOP PROTECTOR

Only One Name Means ProTek’Tion™
dual 4-20mA CONTROL LOOP PROTECTOR
420E212 - 420E260
420E
Description
The 420E 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 inter-
ruption of service.
The 420E series is designed to protect 4-20mA analog control loops from differential (line to line) and common mode
(line to ground) transients. Terminals 1 and 2 are designated as line pairs for both the line and the equipment side of
the protector. A transient voltage suppressor is internally connected across each line pair for differential mode protec-
tion. Each line pair is referenced to ground. This product can also be used on telephone, signal/data lines, security,
timing and control interface circuits.
Features
• Compatible with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV
• Compatible with IEC 61000-4-4 (EFT): 40A - 5/50ns
• Compatible with IEC 61000-4-5 (Surge): 95A, 8/20µs, Level 4 (Line-
Gnd) & 48A, Level 4 (Line-Line)
• 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
• Approximate Weight: 50 grams
• Flammability Rating UL 94V-0
applications
• Security Alarm Systems
• Industrial Control and Monitoring Systems
• Remote Tech Site Station
• Process Control Loops
05053.R6 9/12
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