SIEMENS
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Siemens IC 10 · 2017
接触器继电器
3th2微型接触器继电器，4杆和8极
5
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概述
Standards
IEC 60947-1，EN 60947-1，
IEC 60947-5-1, EN 60947-5-1
3th2微型接触器继电器适用于任何内容
climate. The contactor relays with screw terminals are finger-
根据IEC 60529安全。
终端名称符合EN 50011。
连接
The 3TH20 miniature contactor relays with four auxiliary contacts
有SIGUT螺钉端子，平面为6.3 mm x 0.8 mm
连接器和焊销连接。
微型接触器继电器继电器6.3毫米×0.8毫米平板
nectors can be used in the plug-in base with solder pin connec-
印刷电路板的助力。微型接触器继电器
are coded, and the plug-in base is codable in order to ensure
non-interchangeability.
The 3TH22 miniature contactor relays with eight integrated
螺钉端子提供触点。终点站
designations comply with EN 50011.
Contact reliability
低电压和电流的高接触稳定性，特别是
suitable for solid-state circuits with currents
电压下1 mA
of
17.V.
锁定3 th27微型接触器继电器
接触器线圈和释放螺线管的线圈都是
designed for uninterrupted duty.
可以安装RC元件，压敏电阻，二极管或二极管组件
从前面到两个线圈，用于阻尼开口浪涌
线圈。
The contactor relay can also be switched on and released
手动。
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Accessories
Auxiliary switch blocks
微型接触器继电器with four contacts with screw
terminals can be expanded by up to four contacts by adding
mountable auxiliary switch blocks
(see page 5/31)
.
A cover (with unit labeling plate) must be removed from the front
微型接触器中继为此目的。辅助
switch block is then easy to mount. The auxiliary switch blocks
可以通过横向解锁它们再次删除
arranged slide.
带有四个带螺钉端子的微型接触器继电器
contacts according to EN 50011 with the identification number
40E can be expanded with 80E, 71E, 62E, 53E or 44E auxiliary
switch blocks to a total of eight miniature contactor relays ac-
cording to EN 50011. The identification numbers 80E, 71E, 62E,
53.E or 44E on the coded auxiliary switch blocks apply to the
complete contactors. They cannot be combined with miniature
contactor relays with identification number 31E and 33E.
All miniature contactor relays with screw terminals with four
符合EN 50011的联系人，识别号40E，31E
or 22E, can be expanded with auxiliary switch blocks with iden-
tification number 40, 31, 22, 20, 11 or 02 to miniature contactor
relays with six or eight contacts according to EN 50005. The
辅助交换机块上的标识号仅适用
到附加的辅助交换机块。
Surge suppression
RC elements, varistors, diodes or diode assemblies (combina-
tion of a diode and a Zener diode for short break times) can be
plugged onto all contactors and auxiliary switch blocks with
screw terminals from the front in order to dampen opening
surges in the coil
（见第5/32页）
.
The unit labeling plate must be removed for this purpose. It can
be snapped onto the attached surge suppressor.
Additional load module
3TX4490-1J附加负载模块
（见第5/32页）
can be
可编程逻辑控制器使用以增加允许
剩余电流，并限制半导体残余电压
输出。
This module ensures the safe shut-down of 3TH2 contactor
继电器和3TF2接触器通过230 V AC直接控制
半导体输出。它是在同一个canco-
sure as the 3TX4490-3. surge suppressors and can be plugged
into the contactor.
©Siemens AG 2016