Data Sheet
Data sheet 3TH2031-7BF4
Contactor relay, 31E, EN 50011, 3 NO + 1 NC flat connector terminal
Screw mounting (diagonal) 110 V DC DC operation !!! Phased-out
product !!! Successor is SIRIUS 3RH21
Product designation Auxiliary contactor
Product type designation 3TH2
Size of contactor 0
Protection class IP on the front IP00
Reference code acc. to DIN 40719 extended
according to IEC 204-2 acc. to IEC 750
K
Reference code acc. to DIN EN 81346-2 K
Reference code acc. to DIN EN 61346-2 K
Type of voltage of the control supply voltage DC
Control supply voltage at DC
● rated value
110V
Number of NC contacts for auxiliary contacts 1
● delayed switching
0
● lagging switching
0
● make-before-break switching
0
Number of NO contacts for auxiliary contacts 3
● delayed switching
0
● leading contact
0
● make-before-break switching
0
Number of CO contacts for auxiliary contacts 0
Identification number and letter for switching
elements
31 E
Operating current at AC-15
● at 230 V rated value
4A
● at 400 V rated value
3A
Mounting type screw fixing
Height 36mm
Width 50mm
Depth 64.5mm
Type of electrical connection for auxiliary and control
current circuit
tab terminals 6.3 mm
B10 value with high demand rate acc. to SN 31920 400000; With 0.3 x Ie
T1 value for proof test interval or service life acc. to
IEC 61508
20y
Further information
3TH2031-7BF4 Subject to change without notice
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09/13/2019 © Copyright Siemens