05053
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.
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www.protekdevices.com
420E212
thru
420E260
DEVICE CHARACTERISTICS
MAXIMUM RATINGS
@ 25°C Unless Otherwise Specified
PARAMETER
Operating Line Current
Operating Temperature
Storage Temperature
Transient Source Voltage
Transient Current (8/20µs) - Per Line
VALUE
100
-55 to 100
-55 to 100
6
10
UNITS
mA
°C
°C
kV
kA
ELECTRICAL CHARACTERISTICS PER LINE
PART
NUMBER
MAXIMUM
OPERATING
LINE VOLTAGE
MAXIMUM
LEAKAGE
CURRENT
@ 25°C Unless Otherwise Specified
MAXIMUM
CAPACITANCE
MAXIMUM
LINE THRUPUT
RESISTANCE
MAXIMUM
CLAMPING
VOLTAGE
(8/20µs)
@ 2000A
V
C
VOLTS
22
44
46
60
80
95
V
OP
±VOLTS
420E212
420E225
420E228
420E236
420E250
420E260
12.0
25.0
28.0
36.0
50.0
60.0
@V
WM
I
D
µA
5.0
5.0
5.0
5.0
5.0
5.0
@ 0V, 1MHz
C
PF
6000
3000
2800
1500
1200
1000
R
OHMS
12
12
12
12
12
12
INSTALLATION INSTRUCTIONS
There are two (2) terminals on the
LINE SIDE
and three (3) wires on the
EQUIPMENT SIDE
of this surge protection device (SPD). The Ground
lead is considered ground for both the input terminal and the equipment
wire connections. For the best results, the ground wire should be
connected to a low impedance ground or the green wire AC power
ground. It is recommended that a #14 standard wire be used for this
connection.
Field (current) loops or incoming signal/data lines are to be cut or
disconnected from the equipment to insert the SPD. The
LINE SIDE
terminals of the protector are to be connected to the field loop wires.
The
EQUIPMENT SIDE
of the protector is connected to the equipment/
controller, etc. The location of the protector should be as close to the
equipment requiring protection.
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www.protekdevices.com
420E212
thru
420E260
PACKAGE OUTLINE & DIMENSIONS
420E2 CASE OUTLINE
1.40 MAX
(35.56mm)
2.50 NOM
(63.50mm)
1
1.20 MAX
(30.48mm)
GND
2
LINE
SIDE
EQUIPMENT
SIDE
GND
2
1
0.675 MAX
(17.15mm)
COPYRIGHT © ProTek Devices 2003
SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteristics described herein without notice (except JEDEC).
DESIGN CHANGES: ProTek reserves the right to discontinue product lines without notice, and that the final judgement concerning selection and specifications is
the buyer’s and that in furnishing engineering and technical assistance, ProTek assumes no responsibility with respect to the selection or specifications of such
products.
ProTek Devices
2929 South Fair Lane, Tempe, AZ 85282
Tel: 602-431-8101 Fax: 602-431-2288
E-Mail: sales@protekdevices.com
Web Site: www.protekdevices.com
www.protekdevices.com
05053.R4 7/04
3
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