Description
4.3 Device versions
SIRIUS 3RN2 thermistor motor protection relay
Manual, 10/2016, A5E34244868002A/RS-AA/001
25
SIRIUS 3RN2 thermistor motor protection relays are available in the following versions:
● 3RN2000 compact units
● 3RN2010 standard units
● 3RN2012-.BW31 bistable devices
● 3RN2011, 3RN2012-.B.30, 3RN2013 standard units with ATEX approval
● 3RN2023 devices with ATEX approval and 2 sensor circuits for warning and
disconnection
The overall height of all 3RN2 thermistor motor protection relays is 100 mm. The overall
depth is a standard 90 mm. The 3RN2 thermistor motor protection relays are designed in two
widths:
● 17.5 mm
This overall width is used for the 3RN2000 compact tripping relays with 1 changeover
contact and with A1 jumpered contact root of the changeover contact and the 3RN2010-
.C.30 with 1 NC contact and 1 NO contact. The units have 8 possible terminals.
● 22.5 mm
This overall width is used for all other relays and provides 12 possible terminals.
You will find the precise dimensions in the Dimension drawings (Page 61) chapter.
Special features
Operating temperature
For operation from -25 °C to +60 °C, there are no restrictions for the control supply,
switching current, or ON time.
All 3RN2 thermistor motor protection relays are available for supply voltages 24 V AC/DC
and 24 to 240 V AC/DC.
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