MTBF97 a
MTTFd303 a
— upwards0 mm
— forwards0 mm
— backwards0 mm
— downwards0 mm
— at the side0 mm
fastening methodscrew and snap-on mounting onto 35 mm DIN rail
product categorySIRIUS 3RN2 thermistor motor protection
product functionthermistor motor protection
mounting positionany
product brand nameSIRIUS
degree of pollution3
display version LEDYes
product designationThermistor motor protection relay
design of the productStandard evaluation unit with ATEX approval, open-circuit and short-circuit detection in the sensor circuit
product type designation3RN2
Safe failure fraction (SFF)74 %
relative metering precision2 %
Substance Prohibitance (Date)07/01/2006
type of electrical connectionscrew terminal
material of switching contactsAgSnO2
operating frequency rated value50 ... 60 Hz
design of the electrical isolationgalvanic isolation
category according to EN ISO 13849-11
surge voltage resistance rated value4 kV
explosion protection category for gas[Ex e] [Ex d] [Ex px]
explosion protection category for dust[Ex t] [Ex p]
reference code according to IEC 81346-2K
average diagnostic coverage level (DCavg)18 %
control supply voltage at DC rated value24 V
relative humidity during operation maximum70 %
safety device type according to IEC 61508-2Type B
shock resistance according to IEC 60068-2-2711g / 15 ms
tightening torque with screw-type terminals0.6 ... 0.8 N·m
number of CO contacts for auxiliary contacts2
number of NC contacts for auxiliary contacts0
number of NO contacts for auxiliary contacts0
performance level (PL) according to ISO 13849-1PL c
type of voltage of the control supply voltageAC/DC
vibration resistance according to IEC 60068-2-610 ... 55 Hz: 0.35 mm
hardware fault tolerance according to IEC 615080
performance level (PL) according to EN ISO 13849-1c
electrostatic discharge according to IEC 61000-4-26 kV contact discharge / 8 kV air discharge
mechanical service life (operating cycles) typical10 000 000
PFHD with high demand rate according to IEC 620613.8E-7 1/h
Safety Integrity Level (SIL) according to IEC 615081
Safety Integrity Level (SIL) according to IEC 62061SIL 1
PFDavg with low demand rate according to IEC 615080.0041
buffering time in the event of power failure minimum40 ms
installation altitude at height above sea level maximum2 000 m
ampacity of the output relay at AC-15 at 250 V at 50/60 Hz3 A
operational current of auxiliary contacts at AC-15 maximum3 A
continuous current of the DIAZED fuse link of the output relay6 A
failure rate [FIT] at rate of recognizable hazardous failures (λdd)7E-8 1/h
thermal current of the switching element with contacts maximum5 A
failure rate [FIT] at rate of non-recognizable hazardous failures (λdu)3.1E-7 1/h
product component removable terminal for auxiliary and control circuitYes
T1 value for proof test interval or service life according to IEC 615083 a
insulation voltage for overvoltage category III according to IEC 60664 with degree of pollution 3 rated value300 V
