SIEMENS
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Siemens IC 10 · 2017
Switching Devices – Soft Starters and Solid-State Switching Devices
Introduction
6
Use of SIRIUS solid-state switching devices for switching
motors in conjunction with IE3/IE4 motors
Note:
When using SIRIUS solid-state switching devices for switching
motors in conjunction with highly energy-efficient IE3/IE4 motors,
please observe the information on dimensioning and
configuring,
see "Application Manual for SIRIUS Controls with
IE3/IE4 Motors",
.
For more information
see Preface, page 7
.
More information
Home page,
see www.siemens.com/solid-state-switching-devices
Industry Mall,
see www.siemens.com/product?3RF
Online configurator,
see www.siemens.com/sirius/configurators
3RF21
3RF20
3RF22
3RF23
3RF24
3RF29
3RF34 (motor)
Article No.
Page
SIRIUS solid-state switching devices for switching resistive/inductive loads
Solid-state relays
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
3RF22
6/61
6/66
6/70
Solid-state contactors
Solid-state contactors
• Complete units 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 for inductive loads "instantaneous switching"
• Special versions "Low Noise" and "Short-Circuit Proof"
3RF23
3RF24
6/74
6/84
Function modules
For extending the functionality of the 3RF21 solid-state relays and the 3RF23
solid-state contactors for many different applications:
Converters
• Converters used for converting an analog input signal into an on/off ratio;
can also be used on 3RF22 and 3RF24 three-phase switching devices
3RF2900-0EA18
6/96
Load monitoring
• For load monitoring of one or more loads (partial loads)
3RF29..-0FA08,
3RF29.0-0GA..
6/97
Heating current monitoring
• For load monitoring of one or more loads (partial loads);
remote teach
3RF29..-0JA..
6/98
Power controllers
• For setting the current by means of a solid-state switching device
depending on a setpoint value set by the power controller.
There is a choice of full-wave control and generalized phase control.
3RF29..-0KA.
6/99
Power regulators
• For regulating the current by means of a solid-state switching device,
depending on a setpoint value set by the power regulator.
Closed-loop control: full-wave control or generalized phase control
3RF29.0-0HA..
6/100
SIRIUS solid-state switching devices for switching motors
Solid-state contactors
Solid-state contactors,
solid-state reversing contactors
• Complete units in the insulated enclosure with integrated heat sink,
"ready to use"
• Compact and space-saving design
• Version for motors, "instantaneous switching"
3RF34
6/104, 6/108
© Siemens AG 2016