A-1737
Motor Coil
Temperature
Sensor
The A-1737 Motor Coil Temperature Sensor provides critical temperature feedback of an electric
motors operating condition. Used by either interlacing into the stator coil, or tied to the neutral
bus bar on the motor circuit, it provides a temperature feedback to indicate motor load or stall
conditions.
In the event of excessive load or stall in the electric motor, the current in the coil or bus bar
increases. This increase in current creates heat in the system which is measured by the sensor.
By understanding the temperature conditions, the system can prevent damage to the motor
system.
Applications Features
EV/HEV Motor Protection Robust design utilizing the Amphenol
Advanced Sensors AL03006 Series of NTC
Starter/Generator Motor Protection Thermistors, which is exclusively designed
for applications in harsh environments
Industrial Motor/Generator Protection
Qualified in automotive harsh environment
Traction Motor Protection conditions
Assembly materials rated to 210C
Configurable for alternative R/T curves and
accuracy requirements
Connector, terminal or straight leads are
optional
Abrasion sleeve utilized to protect wires in
application
Amphenol
Advanced SensorsSpecifications
R @ 25C Housing Material
30,000 ohms 5% Axial leaded glass NTC thermistor
R @ 210C Terminal
155.45 ohms 11.5% Molex Terminal 33011-3001
B (25/85C) NTC Element Part Number
3974K AL03006-17.53-98-G2
Operating Temperature Range Weight
-40C to 210C 2 grams
Storage Temperature Range Ordering Code
-50C to 210C A-1737
Response time Thermistor Material System
7 seconds liquid to liquid GE9.8
Resistance vs. Temperature Data
Temp Resistance % Resistance C
-40 965808 9.99 1.53
0 96255 6.51 1.30
20 37387 5.29 1.19
25 30000 5.00 1.15
50 10850 6.42 1.68
80 3775 7.78 2.40
100 2034 8.67 2.91
130 886.6 9.51 3.69
150 541.7 10.22 4.33
175 310.1 10.68 5.05
210 155.4 11.47 6.23
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Amphenol
2017 Amphenol Corporation. All Rights Reserved. Specifications ar e subject to change without notice.
Other company names and product names used in this document are the registered trademarks or
Advanced Sensors
trademarks of their respective owners.
AAS-920-540D 12/2017