3RF20 datasheet(1/23 Pages) SIEMENS

Part #	3RF20

Description	Controls - Solid-State Switching Devices

PDF	23 Pages

Scroll/Zoom	100%

Manufacturer	SIEMENS [Siemens Semiconductor Group]

Direct Link	http://www.siemens.com/

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Controls — Solid-State Switching Devices

Introduction

4/2

Siemens LV 1 · 2006

■Overview

3RF21

3RF20

3RF23

3RF29

Order No.

Page

SIRIUS SC solid-state switching devices

Solid-state relays

22.5 mm solid-state relays,

45 mm solid-state relays

• Widths of 22.5 mm and 45 mm

• Compact and space-saving design

• "Zero-point switching" version

• Mounting onto existing heat sinks

3RF21,

3RF20

4/7

4/10

Solid-state contactors

• Complete unit comprising a solid-state relay and an optimized heat

sink, "ready to use"

• Compact and space-saving design

• Versions for resistive loads "zero-point switching" and inductive

loads "instantaneous switching"

• Special designs "Low Noise" and "Short-Circuit Resistant"

3RF23

4/11

Function modules

For extending the functionality of the 3RF21 solid-state relays and

the 3RF23 solid-state contactors for many different applications:

Converters

• For converting an analog input signal into an on/off ratio

3RF29 00-0EA18

4/22

Load monitoring

• For load monitoring of one or more loads (partial loads)

3RF29 20-0FA08,

3RF29 .0-0GA..

4/23

Heating current monitoring

• For load monitoring of one or more loads (partial loads)

3RF29 ..-0JA..

4/23

Power controllers

• For supplying the current by means of a solid-state switching

device depending on a setpoint value

Closed-loop control: Full wave control or generalized phase control

3RF29 .0-0HA..

4/24

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3RF20 Datasheet(PDF) 1 Page - Siemens Semiconductor Group

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