only one name means protektion? www.protekdevices.com 05048.r5 9/12 page 1 05048 420lb28 - 420le60 two line pair 4-20 m a control loop protector d e s cription the 420le/b series is a two stage transient voltage protector providing primary and secondary protecton against lightning, inductve switching and electrostatc discharge (esd) transient threats. the frst stage diverts the transient current through the ground terminal return path and the second stage clamps the voltage to a safe level without inter - rupton of service. the 420le/b series is designed to protect data lines from diferental (line to line) and common mode (line to ground) transients. terminals 1 and 2, 3 and 4 for the 420le and pins 2 and 3, 4, and 5 for the 420lb are designated as line pairs. each line pair is referenced to ground. a transient voltage suppressor is connected across each line pair for dif - ferental mode protecton. each line pair is referenced to ground. this product can also be used on telephone, signal/data lines, security, tming and control interface circuits. for most applicatons, the product should be located as close as possible to the equipment being protected. a low impedance grounding system is important to maintain a low voltage clamp between the line-to-ground connecton. f eat u re s ? compatble with iec 61000-4-2 (esd): air - 15kv, contact - 8kv ? compatble with iec 61000-4-4 (eft): 40a - 5/50ns ? compatble with iec 61000-4-5 (surge): 95a, 8/20s, level 4 (line- gnd) & 48a, level 4 (line-line) ? designed for 4-20ma current loops ? automatc reset - does not interrupt service ? permanent two-stage line pair protecton ? common mode & diferental mode protecton ? subnanosecond response time ? efectve against lightning, inductve switching and esd m ec h anical c h aracteri s tic s ? approximate weight: 28 grams (420lb) & 142 grams (420le) ? flammability ratng ul 94v-0 application s ? mult-process control loops ? fire & security systems ? petro-chemical plants ? refneries & tank farms 420lb 420le
only one name means protektion? www.protekdevices.com 05048.r5 9/12 page 2 05048 420lb28 - 420le60 t y pical de v ice c h aracteri s tic s maxim u m rating s @ 25c u nless otherwise specifed parameter sy mbol v al u e u nit s operatng line current i o 100 ma transient source voltage - 6 kv transient current - 8/20s waveform - 10 ka/wire operatng temperature t a -55 to 100 c storage temperature t stg -55 to 100 c electrical c h aracteri s tic s per line @ 25c u nless otherwise specifed part n u mber maxim u m operating line v oltage v op v olt s maxim u m leakage c u rrent @ v op i d a maxim u m clamping v oltage (8/20s) @ 2000a v c v olt s maxim u m capacitance @ 0v, 1 m h z c p f maxim u m line t h ro u g h p u t re s i s tance r o h m s 420lb28 28.0 5.0 40 2800 12 420lb35 35.0 5.0 60 1500 12 420lb60 60.0 5.0 85 1000 12 420le28 28.0 5.0 40 2800 12 420le35 35.0 5.0 60 1500 12 420le60 60.0 5.0 85 1000 12 in s tallation in s tr u ction s there are fve (5) terminals on the line side and fve (5) terminals on the equipment side of the 420le, 4 data lines and one ground. both grounds are connected together internally. a single low impedance is ground sufcient. incoming data lines are cut or disconnected from the equipment to insert the 420le/b products. the incoming lines are to be connected to the line side terminals as the equipment side lines are connected to the equipment side terminals. the locaton of the product should be as close to the equipment as possible. the 420le/b series is designed with a short circuit failure mode to give maximum protecton. a fuse, fusible link, or circuit breaker is recommended for each data/signal line on the input side for those that require an open circuit failure mode. cauton: a low dc resistance ground may not be indicatve of a good lightning ground. lightning contains a broad spectrum of frequencies up to 1 mhz. a low im - pedance path to ground at the transient frequencies is necessary. a ground strap is recommended or a #6 awg stranded wire. for wire lengths over 1.5 meters, there may be some excessive line to earth potental under severe thunderstorm conditons.
only one name means protektion? www.protekdevices.com 05048.r5 9/12 page 3 05048 420lb28 - 420le60 package information 420 l b o u tline dimen s ion s dim millimeter s inc h e s min max min max a - 12.7 - 0.50 b - 76.2 - 3.0 c - 48.2 - 1.90 d - 7.6 - 0.30 e - 17.8 - 0.7 n ote s 1. i/o contacts spaced at 0.156 (3.96mm) centers. a b c line equipment d 2 5 12 15 orientation notch gnd e output connected to transmit/receive circuits input connected to line from outside world continuity input output 12 13 14 15 5 4 3 2
only one name means protektion? www.protekdevices.com 05048.r5 9/12 page 4 05048 420lb28 - 420le60 package information 420 l e o u tline dimen s ion s dim millimeter s inc h e s min max min max a - 95.5 - 3.8 b 82.22 82.98 3.235 3.265 c - 57.2 - 2.25 d - 30.2 - 1.125 e - 15.5 - 0.61 f - 30.2 - 1.19 a b c d e f mountng hole for #8 screw terminal screw a adhesive mylar label terminal strip #6 screws equipment line 4 3 gnd 2 1 1 2 gnd 3 4 warning ordering information ba s e part n u mber (xx = v oltage) marking 420lbxx logo, date code, terminal designatons and part number 420lexx logo, date code, terminal designatons and part number
only one name means protektion? www.protekdevices.com 05048.r5 9/12 page 5 05048 420lb28 - 420le60 compan y information copyright ? protek devices 1998 - this literature is subject to all applicable copyright laws and is not for resale in any manner. specifications: protek reserves the right to change the electrical and or mechanical characteristcs described herein without notce. design changes: protek reserves the right to discontnue product lines without notce and that the fnal judgement concerning selecton and specifcatons is the buyers and that in furnishing engineering and technical assistance. protek assumes no responsibility with respect to the selecton or specifcatons of such products. protek makes no warranty, representaton or guarantee regarding the suitability of its products for any partcular purpose, nor does protek assume any liability arising out of the applicaton or use of any product or circuit and specifcally disclaims any and all liability without limitaton special, consequental or incidental damages. life support policy: protek devices products are not authorized for use in life support systems without writen consent from the factory. compan y profile in business more than 20 years, protek devices? is a privately-held company located in tempe, arizona, that ofers a product line of tran - sient voltage suppressors (tvs); avalanche breakdown diodes; steering diode tvs arrays and other surge suppressor component products. these tvs devices protect electronic systems from the efects of lightning, electrostatc discharge (esd), nuclear electromagnetc pulses (nemp), inductve switching and emi / rfi. protek devices also ofers high performance interface and linear products that include analog switches; multplexers; led drivers; audio control ics; rf and related high frequency products. the analog devices work in a host of con - sumer; industrial; automotve and other applicatons. contact us corporate h eadquarters 2929 south fair lane tempe, arizona 85282 usa by telephone general: 602-431-8101 sales: & marketng: 602-414-5109 customer service: 602-414-5114 product technical support: 602-414-5107 by fax general: 602-431-2288 by e-mail: sales: sales@protekdevices.com customer service: service@protekdevices.com technical support: support@protekdevices.com protek devices (asia pacifc) pte. ltd. 8 ubi road 2, #06-19 zervex singapore - 408538 tel: +65-67488312 fax: +65-67488313 web www.protekdevices.com
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