Product Overview

YGM Motor Protectors PTC (Positive Temperature Coefficient) Thermistors are designed as thermal protectors for electrical motors. They offer rapid response protection for electrical machines and are compact for easy assembly into windings. These PTC thermistors feature a non-linear resistance/temperature response, rapidly increasing to a very high value at a specified temperature. They are suitable for monitoring the windings of electric machines and for use in simple fail-safe circuitry. When the nominal response temperature is exceeded, the PTC sensor's extremely high ohmic value can switch off the circuit via a relay or amplifier, effectively acting as a circuit break.

Product Attributes

• Brand: YGM
• Type: PTC Thermistors
• Lead Material: Silvered copper wire
• Lead Insulation: Teflon (PTFE)
• Available with or without an insulated sleeve
• Flexible connecting leads
• Division of Microtherm

Technical Specifications

Model	Type	Response Temp. NAT (C)	Tolerance (C)	Colour Code	Description	Conductor Cross-section	Conductor Length
YGM1	Single Thermistor	80 5	5	white - yellow - yellow - white	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	90 5	5	green - yellow - yellow - green	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	100 5	5	red - yellow - yellow - red	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	110 5	5	brown - yellow - yellow - brown	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	120 5	5	grey - yellow - yellow - grey	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	130 5	5	blue - yellow - yellow - blue	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	140 5	5	white - yellow - yellow - blue	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	145 5	5	white - yellow - yellow - black	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	150 5	5	black - yellow - yellow - black	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	155 5	5	blue - yellow - yellow - black	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	160 5	5	blue - yellow - yellow - red	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	170 5	5	white - yellow - yellow - green	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM1	Single Thermistor	180 5	5	red - yellow - yellow - white	with shrunk-sleeve & epoxy seal	0.25 mm	500 mm 10 mm
YGM3	Triple Thermistor	80 5	5	white - yellow - yellow - white	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	90 5	5	green - yellow - yellow - green	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	100 5	5	red - yellow - yellow - red	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	110 5	5	brown - yellow - yellow - brown	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	120 5	5	grey - yellow - yellow - grey	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	130 5	5	blue - yellow - yellow - blue	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	140 5	5	white - yellow - yellow - blue	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	145 5	5	white - yellow - yellow - black	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	150 5	5	black - yellow - yellow - black	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	155 5	5	blue - yellow - yellow - black	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	160 5	5	blue - yellow - yellow - red	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	170 5	5	white - yellow - yellow - green	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
YGM3	Triple Thermistor	180 5	5	red - yellow - yellow - white	with shrunk-sleeve & epoxy seal	0.25 mm	500 - 180 - 180 - 500 mm 10 mm
CEF1	Mount-on Sensor	80 5	5	white - white	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	90 5	5	green - green	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	100 5	5	red - red	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	110 5	5	brown - brown	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	120 5	5	grey - grey	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	130 5	5	blue - blue	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	140 5	5	white - blue	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	145 5	5	white - black	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	150 5	5	black - black	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	155 5	5	blue - black	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	160 5	5	blue - red	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	170 5	5	white - green	in isolated brass/aluminium housing	N/A	N/A
CEF1	Mount-on Sensor	180 5	5	red - white	in isolated brass/aluminium housing	N/A	N/A
Nominal response temperature: 80 to 180 C in steps of 10 , plus 145 and 155 C
Maximum allowable operating temp. Tmax.: 200 C
Max. allowable operating voltage at + 25 C Umax.: 25V (per bead)
Max. allowable power dissipation at + 25 C: 690 mW
Insulation strength (between leads and outer insulation) also for threaded sensor: 2.5 kV
Insulation stripping: approx 10 mm
Standard Resistance Values (Cold Resistance): Ideally between 40 - 250 ohms
Resistance change between 5 C either side of NAT: at least 15%/K
Quality standard: DIN 44081/44082 for resistance values
Testing: Random testing according to DGQ P90/P10 (DIN 40080)
Standard Resistance Values (per DIN 44081/44082)
Type	Temperature (C)	Resistance ()	Measuring Voltage (V)	Notes
Single PTC	20 to NAT 20	max. 250	2.5
Single PTC	NAT 5	max. 550	2.5
Single PTC	NAT	1.000	2.5
Single PTC	NAT + 5	min. 1.330	2.5
Single PTC	NAT + 15	min. 4.000	7.5
Triple PTC	20 to NAT 20	max. 750	7.5
Triple PTC	NAT 5	max. 1.650	7.5
Triple PTC	NAT	4.000 min.	7.5
Triple PTC	NAT + 15	4.000 min.*	7.5	* One PTC might reach NAT + 15 C, while others remain at room temperature.

2411220237_Cantherm-YGM1-C545_C2618502.pdf