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Circuit diagrams
The following figure shows a sample circuit for a 3RN2012 or 3RN2013 thermistor motor
protection relay.
A1(+)
Rated control supply voltage ~/+
A2(-)
Rated control supply voltage ~/-
K
Contactor relay
M
Motor
S
NO contact, latching
S1
NO contact 1
S2
NO contact 2
S3
NO contact 3
T1
Thermistor connection contact 1
T2
Thermistor connection contact 2
Y1, Y2
Connection for remote RESET (NO contact)
Y1 and Y2 jumpered: Auto RESET
SIRIUS 3RN2 thermistor motor protection relay
Manual, 10/2016, A5E34244868002A/RS-AA/001
12
65
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