Datasheet > 420LB28_12

420LB28_12

更新时间： 2022-05-17 01:54:34

品牌	Logo	应用领域
PROTEC		/
页数	文件大小	规格书
5页	447K
描述
TWO LINE PAIR 4-20mA CONTROL LOOP PROTECTOR

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420LB28_12 数据手册

420LB28 - 420LE60

Only One Name Means ProTek’Tion™

TWO LINE PAIR 4ꢀ20mA CONTROL LOOP PROTECTOR

DEꢁCRIPTION

The 420LE/B series is a two stage transient voltage protector providing primary and secondary protecꢀon against

lightning, inducꢀve switching and electrostaꢀc 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-

rupꢀon of service.

The 420LE/B series is designed to protect data lines from diﬀerenꢀal (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-

ferenꢀal mode protecꢀon. Each line pair is referenced to ground.

420LB

420LE

This product can also be used on telephone, signal/data lines, security, ꢀming and control interface circuits. For most

applicaꢀons, 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 connecꢀon.

FEATuREꢁ

APPLICATIONꢁ

• Compaꢀble with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV

• Compaꢀble with IEC 61000-4-4 (EFT): 40A - 5/50ns

• Compaꢀble with IEC 61000-4-5 (Surge): 95A, 8/20µs, Level 4 (Line-

Gnd) & 48A, Level 4 (Line-Line)

• Mulꢀ-Process Control Loops

• Fire & Security Systems

• Petro-Chemical Plants

• Reﬁneries & Tank Farms

• Designed for 4-20mA Current Loops

• Automaꢀc Reset - Does Not Interrupt Service

• Permanent Two-Stage Line Pair Protecꢀon

• Common Mode & Diﬀerenꢀal Mode Protecꢀon

• Subnanosecond Response Time

• Eﬀecꢀve Against Lightning, Inducꢀve Switching and ESD

MEChANICAL ChARACTERIꢁTICꢁ

• Approximate Weight: 28 grams (420LB) & 142 grams (420LE)

• Flammability Raꢀng UL 94V-0

www.protekdevices.com

05048.R5 9/12

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