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AC Protection & Motor Control in HVAC Solutions

Littelfuse AC Protection and Motor Control in HVAC Solutions are essential to improve energy efficiency in commercial and industrial buildings. These solutions include fuses, surge protection devices, voltage monitors, transducers, sensors, and time delay relays. Littelfuse AC Protection and Motor Control in HVAC products are designed for control units, rectifiers, inverters, communication interfaces, and user interfaces.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.
NTC Thermistors THERMISTOR, U.S. SENSOR SM103J1F Littelfuse 1: ¥294 2,500In Stock	Mfr. Part # SM103J1F Mouser Part # 576-SM103J1F	Littelfuse	NTC Thermistors THERMISTOR, U.S. SENSOR Learn More about Littelfuse surface mount thermistors	Datasheet	2,500In Stock	¥294 ¥280.7 ¥237.5 ¥232.5 View ¥210.9 ¥187.7 ¥166.1	Min.: 1 Mult.: 1
Proximity Sensors 59140 030 PROX SENSOR 59140-030 Littelfuse 1: ¥1,084.6 650In Stock	Mfr. Part # 59140-030 Mouser Part # 934-59140-030	Littelfuse	Proximity Sensors 59140 030 PROX SENSOR Learn More about Littelfuse sensors	Datasheet	650In Stock	¥1,084.6 ¥1,038.1 ¥903.6 ¥837.1 View ¥828.8 ¥691	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-020 Littelfuse 1: ¥719.2 1,389In Stock	Mfr. Part # 59140-020 Mouser Part # 934-59140-020	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse sensors	Datasheet	1,389In Stock	¥719.2 ¥717.6 ¥601.3 ¥556.4 View ¥453.5 ¥436.8 ¥392	Min.: 1 Mult.: 1
Proximity Sensors 59140-3-S-02-F SENS 59140-3-S-02-F Littelfuse 1: ¥918.5 435In Stock	Mfr. Part # 59140-3-S-02-F Mouser Part # 934-59140-3-S-02-F	Littelfuse	Proximity Sensors 59140-3-S-02-F SENS Learn More about Littelfuse reed sensors	Datasheet	435In Stock	¥918.5 ¥827.2 ¥808.9 ¥762.4 View ¥646.1 ¥626.2	Min.: 1 Mult.: 1
Proximity Sensors 59140-1-U-02-A SENS 59140-1-U-02-A Littelfuse 1: ¥677.7 5,204In Stock	Mfr. Part # 59140-1-U-02-A Mouser Part # 934-59140-1-U-02-A	Littelfuse	Proximity Sensors 59140-1-U-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	5,204In Stock	¥677.7 ¥566.4 ¥524.9 ¥426.9 View ¥397 ¥390.3	Min.: 1 Mult.: 1
NTC Thermistors 1K OHM +/-10% SM102B1K Littelfuse 1: ¥267.4 691In Stock	Mfr. Part # SM102B1K Mouser Part # 803-SM102B1K	Littelfuse	NTC Thermistors 1K OHM +/-10% Learn More about Littelfuse surface mount thermistors	Datasheet	691In Stock	¥267.4 ¥254.1 ¥212.6 ¥207.6 View ¥189.4 ¥169.4 ¥159.1 ¥147	Min.: 1 Mult.: 1
NTC Thermistors NTC THERMISTOR 2K OHM 10% MELF SM202F1K Littelfuse 1: ¥328.9 459In Stock	Mfr. Part # SM202F1K Mouser Part # 576-SM202F1K	Littelfuse	NTC Thermistors NTC THERMISTOR 2K OHM 10% MELF Learn More about Littelfuse surface mount thermistors	Datasheet	459In Stock	¥328.9 ¥254.1 ¥212.6 ¥207.6 View ¥189.4 ¥164.6 ¥157.5 ¥149.2	Min.: 1 Mult.: 1
Proximity Sensors NO 12-18AT 750mm 59140-1-S-04-E Littelfuse 1: ¥533.2 478In Stock	Mfr. Part # 59140-1-S-04-E Mouser Part # 934-59140-1-S-04-E	Littelfuse	Proximity Sensors NO 12-18AT 750mm Learn More about Littelfuse reed sensors	Datasheet	478In Stock	¥533.2 ¥476.7 ¥456.8 ¥431.9 View ¥413.6 ¥397 ¥365.4 ¥353.8 ¥330.5	Min.: 1 Mult.: 1
NTC Thermistors NTC THERMISTOR 20K OHM 2% LUG USUR1000-203G-06 Littelfuse 1: ¥2,214.1 28In Stock	Mfr. Part # USUR1000-203G-06 Mouser Part # 576-USUR1000-203G-06	Littelfuse	NTC Thermistors NTC THERMISTOR 20K OHM 2% LUG Learn More about Littelfuse thermistor probes assemblies	Datasheet	28In Stock	¥2,214.1 ¥1,956.7 ¥1,754 ¥1,661 View ¥1,584.6 ¥1,491.6 ¥1,406.9 ¥1,405.2 ¥1,382	Min.: 1 Mult.: 1
Proximity Sensors 59140-4-U-02-A SENS 59140-4-U-02-A Littelfuse 1: ¥986.6 375In Stock	Mfr. Part # 59140-4-U-02-A Mouser Part # 934-59140-4-U-02-A	Littelfuse	Proximity Sensors 59140-4-U-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	375In Stock	¥986.6 ¥888.6 ¥850.4 ¥807.2 View ¥775.7 ¥732.5 ¥607.9	Min.: 1 Mult.: 1
NTC Thermistors NTC THERMISTOR 30K OHM 2% LUG USUR1000-303G-06 Littelfuse 1: ¥1,659.3 1In Stock 50Expected 11/11/2026	Mfr. Part # USUR1000-303G-06 Mouser Part # 576-USUR1000-303G-06	Littelfuse	NTC Thermistors NTC THERMISTOR 30K OHM 2% LUG Learn More about Littelfuse thermistor probes assemblies	Datasheet	1In Stock 50Expected 11/11/2026	¥1,659.3	Min.: 1 Mult.: 1
Sensor Hardware & Accessories MAGNET ACTUATOR FOR 59140 AND 59141 57140-000 Littelfuse 1: ¥350.5 37,827In Stock	Mfr. Part # 57140-000 Mouser Part # 934-57140-000	Littelfuse	Sensor Hardware & Accessories MAGNET ACTUATOR FOR 59140 AND 59141 Learn More about Littelfuse magnetic actuators	Datasheet	37,827In Stock	¥350.5 ¥312.3 ¥280.7 ¥269.1 View ¥250.8 ¥235.9 ¥230.9	Min.: 1 Mult.: 1
Proximity Sensors Actuator for 59140 and 59141 59140-010 Littelfuse 1: ¥581.4 6,937In Stock 3,200Expected 12/22/2026	Mfr. Part # 59140-010 Mouser Part # 934-59140-010	Littelfuse	Proximity Sensors Actuator for 59140 and 59141 Learn More about Littelfuse sensors	Datasheet	6,937In Stock 3,200Expected 12/22/2026	¥581.4 ¥519.9 ¥498.3 ¥470.1 View ¥451.8 ¥435.2 ¥410.3	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-1-S-02-A Littelfuse 1: ¥624.5 7,603In Stock	Mfr. Part # 59140-1-S-02-A Mouser Part # 934-59140-1-S-02-A	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse reed sensors	Datasheet	7,603In Stock	¥624.5 ¥559.8 ¥534.8 ¥506.6 View ¥486.7 ¥466.7 ¥428.5 ¥416.9	Min.: 1 Mult.: 1
Proximity Sensors 59140-1-S-02-F SENS 59140-1-S-02-F Littelfuse 1: ¥624.5 7,857In Stock	Mfr. Part # 59140-1-S-02-F Mouser Part # 934-59140-1-S-02-F	Littelfuse	Proximity Sensors 59140-1-S-02-F SENS Learn More about Littelfuse reed sensors	Datasheet	7,857In Stock	¥624.5 ¥559.8 ¥534.8 ¥506.6 View ¥486.7 ¥466.7 ¥430.2 ¥416.9	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-040 Littelfuse 1: ¥865.4 2,910In Stock	Mfr. Part # 59140-040 Mouser Part # 934-59140-040	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse sensors	Datasheet	2,910In Stock	¥865.4 ¥779 ¥747.5 ¥709.2 View ¥682.7 ¥656.1 ¥607.9 ¥598	Min.: 1 Mult.: 1
Proximity Sensors NO 12-18AT 500mm TIN 59140-1-S-03-A Littelfuse 1: ¥509.9 777In Stock	Mfr. Part # 59140-1-S-03-A Mouser Part # 934-59140-1-S-03-A	Littelfuse	Proximity Sensors NO 12-18AT 500mm TIN Learn More about Littelfuse reed sensors	Datasheet	777In Stock	¥509.9 ¥456.8 ¥413.6 ¥397 View ¥380.4 ¥355.5	Min.: 1 Mult.: 1
Proximity Sensors 200V 1000mm TINNED LEADS 59140-1-S-05-A Littelfuse 1: ¥988.3 578In Stock	Mfr. Part # 59140-1-S-05-A Mouser Part # 934-59140-1-S-05-A	Littelfuse	Proximity Sensors 200V 1000mm TINNED LEADS Learn More about Littelfuse reed sensors	Datasheet	578In Stock	¥988.3 ¥890.3 ¥853.8 ¥810.6 View ¥780.7 ¥752.4 ¥747.5	Min.: 1 Mult.: 1
Proximity Sensors 59140-1-T-02-A SENS 59140-1-T-02-A Littelfuse 1: ¥589.7 641In Stock	Mfr. Part # 59140-1-T-02-A Mouser Part # 934-59140-1-T-02-A	Littelfuse	Proximity Sensors 59140-1-T-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	641In Stock	¥589.7 ¥528.2 ¥504.9 ¥478.4 View ¥460.1 ¥440.2 ¥416.9	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-1-T-02-F Littelfuse 1: ¥568.1 1,099In Stock	Mfr. Part # 59140-1-T-02-F Mouser Part # 934-59140-1-T-02-F	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse reed sensors	Datasheet	1,099In Stock	¥568.1 ¥508.3 ¥486.7 ¥460.1 View ¥441.8 ¥423.6 ¥400.3	Min.: 1 Mult.: 1
Proximity Sensors 200V 1000mm TINNED LEADS 59140-1-T-05-A Littelfuse 1: ¥1,046.4 500In Stock	Mfr. Part # 59140-1-T-05-A Mouser Part # 934-59140-1-T-05-A	Littelfuse	Proximity Sensors 200V 1000mm TINNED LEADS Learn More about Littelfuse reed sensors	Datasheet	500In Stock	¥1,046.4 ¥943.4 ¥905.2 ¥858.7 View ¥827.2 ¥797.3 ¥772.4 ¥747.5	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-1-V-02-A Littelfuse 1: ¥589.7 843In Stock	Mfr. Part # 59140-1-V-02-A Mouser Part # 934-59140-1-V-02-A	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse reed sensors	Datasheet	843In Stock	¥589.7 ¥528.2 ¥504.9 ¥478.4 View ¥460.1 ¥440.2 ¥416.9	Min.: 1 Mult.: 1
Proximity Sensors 59140-3-S-02-A SENS 59140-3-S-02-A Littelfuse 1: ¥1,116.2 385In Stock	Mfr. Part # 59140-3-S-02-A Mouser Part # 934-59140-3-S-02-A	Littelfuse	Proximity Sensors 59140-3-S-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	385In Stock	¥1,116.2 ¥928.5 ¥860.4 ¥712.6	Min.: 1 Mult.: 1
Proximity Sensors NC 15-20AT 1m TIN Mini Flange Mount 59140-4-S-05-A Littelfuse 1: ¥1,169.3 578In Stock 800Expected 2/8/2027	Mfr. Part # 59140-4-S-05-A Mouser Part # 934-59140-4-S-05-A	Littelfuse	Proximity Sensors NC 15-20AT 1m TIN Mini Flange Mount Learn More about Littelfuse reed sensors	Datasheet	578In Stock 800Expected 2/8/2027	¥1,169.3 ¥1,056.4 ¥1,013.2 ¥975 View ¥973.3 ¥946.8 ¥936.8 Quote	Min.: 1 Mult.: 1
Proximity Sensors PROXIMITY SENSORS . 59140-4-T-02-F Littelfuse 1: ¥976.7 417In Stock 900Expected 1/25/2027	Mfr. Part # 59140-4-T-02-F Mouser Part # 934-59140-4-T-02-F	Littelfuse	Proximity Sensors PROXIMITY SENSORS . Learn More about Littelfuse reed sensors	Datasheet	417In Stock 900Expected 1/25/2027	¥976.7 ¥878.7 ¥842.1 ¥798.9 View ¥769 ¥724.2 ¥629.5 ¥624.5 ¥621.2	Min.: 1 Mult.: 1