PTC thermistors as
limit temperature sensors
Motor protection, triple sensors
Series/Type: B59300
Date: January 2016
EPCOS AG 2016. Reproduction, publication and dissemination of this publication, enclosures hereto and the
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EPCOS AG is a TDK Group Company.Sensors
Motor protection, triple sensors M1300
Applications Dimensional drawing
Thermal protection of winding in electric
motors
Limit temperature monitoring
Features
Thermistor pellets with insulating
encapsulation in series connection
(triple sensor)
Low-resistance type, steep R/T curve
Silver-plated and PTFE-insulated AWG 26
Dimensions in mm
litz wires
Characteristics for sensing temperatures
Tsense = 90 up to 160 C
conform with DIN 44082
Color coding of litz wires to DIN 44082,
connecting wires in yellow
UL approval to UL 1434 (file number
E69802)
RoHS-compatible
Delivery mode
Bulk
General technical data
Max. operating voltage (T = 0 ... 40 C) V 30 V DC
A max
1)
Measuring voltage (T 25 C ... T +5 K) V 2.5 V DC
A = sense meas
1)
Max. measuring voltage For T see tableElectrical V 7.5 V DC
A meas,max
specification
Rated resistance (V 2.5 V) R 300
PTC R
Insulating test voltage Acc. to DIN 44080 V 2.5 kV AC
ins
Thermal threshold time Acc. to DIN 44080 t < 3 s
a
Operating temperature range (V V ) T 25/ T +23 C
meas,max op sense
Operating temperature range (V = V ) T 0/+40 C
max op
1) V and V for 90 C T 160 C acc. to DIN 44082.
meas meas,max sense
Please read Cautions and warnings and Page 2 of 12
Important notes at the end of this document.