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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.	RoHS
Industrial & Electrical Fuses 500A 500VAC 500VDC FF L50QS POWR-SPEED L50QS500.X Littelfuse 1: ¥39,721.2 2In Stock 14Expected 12/14/2026	Mfr. Part # L50QS500.X Mouser Part # 576-L50QS500.X	Littelfuse	Industrial & Electrical Fuses 500A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	2In Stock 14Expected 12/14/2026	¥39,721.2 ¥32,927.7 ¥30,356.4 ¥25,084.4	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 50A 700VAC 700VDC FF L70QS POWR-SPEED L70QS050.V Littelfuse 1: ¥17,325.9 7In Stock	Mfr. Part # L70QS050.V Mouser Part # 576-L70QS050.V	Littelfuse	Industrial & Electrical Fuses 50A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	7In Stock	¥17,325.9 ¥14,367.7 ¥13,251.5 ¥10,960.9 ¥10,125.5	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 70A 700VAC 700VDC FF L70QS POWR-SPEED L70QS070.V Littelfuse 1: ¥22,538.1 6In Stock 85Expected 11/24/2026	Mfr. Part # L70QS070.V Mouser Part # 576-L70QS070.V	Littelfuse	Industrial & Electrical Fuses 70A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	6In Stock 85Expected 11/24/2026	¥22,538.1 ¥19,204.5 ¥17,709.6 ¥14,643.4 ¥13,480.7	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 125A 700VAC 700VDC FF L70QS POWR-SPEED L70QS125.V Littelfuse 1: ¥30,994.3 6In Stock	Mfr. Part # L70QS125.V Mouser Part # 576-L70QS125.V	Littelfuse	Industrial & Electrical Fuses 125A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	6In Stock	¥30,994.3 ¥25,692.3 ¥23,689.2 ¥19,584.9	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 150A 700VAC 700VDC FF L70QS POWR-SPEED L70QS150.V Littelfuse 1: ¥30,994.3 12In Stock	Mfr. Part # L70QS150.V Mouser Part # 576-L70QS150.V	Littelfuse	Industrial & Electrical Fuses 150A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	12In Stock	¥30,994.3 ¥25,692.3 ¥23,689.2 ¥19,584.9	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 750V FAST BLOW 50A Littelfuse L75QS050.V L75QS050.V Littelfuse 1: ¥17,794.3 14In Stock	Mfr. Part # L75QS050.V Mouser Part # 576-L75QS050.V	Littelfuse	Industrial & Electrical Fuses 750V FAST BLOW 50A Learn More about Littelfuse hvac protection control solutions	Datasheet	14In Stock	¥17,794.3 ¥14,756.3 ¥13,610.2 ¥11,258.3 ¥10,399.5	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 750V FAST BLOW 100A Littelfuse L75QS100.V L75QS100.V Littelfuse 1: ¥22,958.3 4In Stock 250On Order	Mfr. Part # L75QS100.V Mouser Part # 576-L75QS100.V	Littelfuse	Industrial & Electrical Fuses 750V FAST BLOW 100A Learn More about Littelfuse hvac protection control solutions	Datasheet	4In Stock 250On Order On Order Ship Dates Mfr. #: L75QS100.V Stock: 4 Can Ship Immediately On Order: 105 Expected 11/5/2026 145 Expected 11/19/2026 Factory Lead-Time: 11 Weeks	¥22,958.3 ¥19,038.4 ¥17,556.8 ¥14,522.1 ¥13,367.7	Min.: 1 Mult.: 1
Controller Accessories LOADSENSOR/SELF-POWE RED/42857 LSRX-C Littelfuse 1: ¥20,078.2 1In Stock	Mfr. Part # LSRX-C Mouser Part # 576-LSRX-C	Littelfuse	Controller Accessories LOADSENSOR/SELF-POWE RED/42857 Learn More about Littelfuse protection products for panels	Datasheet	1In Stock	¥20,078.2 ¥16,654.8 ¥16,419 ¥14,816.1 ¥14,171.7	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 1000V SIZE 70 LONG BL 100A PSR070UL0100Z Littelfuse 1: ¥66,034.7 1In Stock	Mfr. Part # PSR070UL0100Z Mouser Part # 576-PSR070UL0100Z	Littelfuse	Industrial & Electrical Fuses 1000V SIZE 70 LONG BL 100A Learn More about Littelfuse psr fuses	Datasheet	1In Stock	¥66,034.7 ¥55,399.3 ¥51,050.8	Min.: 1 Mult.: 1
NTC Thermistors NTC THERMISTOR 1M OHM 10% MELF SM105R1K Littelfuse 1: ¥222.6 118In Stock	Mfr. Part # SM105R1K Mouser Part # 576-SM105R1K	Littelfuse	NTC Thermistors NTC THERMISTOR 1M OHM 10% MELF Learn More about Littelfuse surface mount thermistors	Datasheet	118In Stock	¥222.6 ¥210.9 ¥199.3 ¥189.4 View ¥182.7 ¥164.6 ¥155.8 ¥152	Min.: 1 Mult.: 1
NTC Thermistors THERMISTOR, U.S. SENSOR SM303J1K Littelfuse 1: ¥222.6 349In Stock	Mfr. Part # SM303J1K Mouser Part # 576-SM303J1K	Littelfuse	NTC Thermistors THERMISTOR, U.S. SENSOR Learn More about Littelfuse surface mount thermistors	Datasheet	349In Stock	¥222.6 ¥210.9 ¥199.3 ¥189.4 View ¥182.7 ¥164.6 ¥157.5 ¥147	Min.: 1 Mult.: 1
Time Delay & Timing Relays SOLIDSTATETIMER TDUH3000A Littelfuse 1: ¥13,151.8 9In Stock	Mfr. Part # TDUH3000A Mouser Part # 576-TDUH3000A	Littelfuse	Time Delay & Timing Relays SOLIDSTATETIMER Learn More about Littelfuse hvac protection control solutions	Datasheet	9In Stock	¥13,151.8 ¥12,460.8 ¥11,768.2 ¥11,075.5 ¥10,384.6	Min.: 1 Mult.: 1
Time Delay & Timing Relays SOLIDSTATETIMER TDUH3001A Littelfuse 1: ¥13,151.8 5In Stock	Mfr. Part # TDUH3001A Mouser Part # 576-TDUH3001A	Littelfuse	Time Delay & Timing Relays SOLIDSTATETIMER Learn More about Littelfuse hvac protection control solutions	Datasheet	5In Stock	¥13,151.8 ¥12,460.8 ¥11,768.2 ¥11,075.5 ¥10,384.6	Min.: 1 Mult.: 1
Time Delay & Timing Relays MULTI-VOLTAGETIMER TMV8000 Littelfuse 1: ¥8,911.3 10In Stock	Mfr. Part # TMV8000 Mouser Part # 576-TMV8000	Littelfuse	Time Delay & Timing Relays MULTI-VOLTAGETIMER Learn More about Littelfuse hvac protection control solutions	Datasheet	10In Stock	¥8,911.3 ¥8,745.2 ¥8,408 ¥8,148.9 ¥8,097.4	Min.: 1 Mult.: 1
Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE TS1412 Littelfuse 1: ¥15,086.9 4In Stock	Mfr. Part # TS1412 Mouser Part # 576-TS1412	Littelfuse	Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE Learn More about Littelfuse industrial portfolio	Datasheet	4In Stock	¥15,086.9 ¥14,294.6 ¥13,500.6 ¥12,705 ¥11,912.7	Min.: 1 Mult.: 1
Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE TS1415 Littelfuse 1: ¥15,086.9 3In Stock	Mfr. Part # TS1415 Mouser Part # 576-TS1415	Littelfuse	Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE Learn More about Littelfuse industrial portfolio	Datasheet	3In Stock	¥15,086.9 ¥14,294.6 ¥13,500.6 ¥12,705 ¥11,912.7	Min.: 1 Mult.: 1
Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE TS1421 Littelfuse 1: ¥15,086.9 5In Stock	Mfr. Part # TS1421 Mouser Part # 576-TS1421	Littelfuse	Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE Learn More about Littelfuse industrial portfolio	Datasheet	5In Stock	¥15,086.9 ¥14,294.6 ¥13,500.6 ¥12,705 ¥11,912.7	Min.: 1 Mult.: 1
Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE TS1422 Littelfuse 1: ¥15,086.9 9In Stock	Mfr. Part # TS1422 Mouser Part # 576-TS1422	Littelfuse	Time Delay & Timing Relays VERSA-TIMERDELAYONM AKE Learn More about Littelfuse industrial portfolio	Datasheet	9In Stock	¥15,086.9 ¥14,294.6 ¥13,500.6 ¥12,705 ¥11,912.7	Min.: 1 Mult.: 1
NTC Thermistors NTC 10K OHM +/-10% SM103J1K-TR Littelfuse 1: ¥84.7 2,566In Stock	Mfr. Part # SM103J1K-TR Mouser Part # 803-SM103J1K-TR	Littelfuse	NTC Thermistors NTC 10K OHM +/-10% Learn More about Littelfuse industrial portfolio	Datasheet	2,566In Stock	Cut Tape ¥84.7 ¥79.9 ¥74.7 ¥70.9 View Reel ¥50.2 ¥67.6 ¥61 ¥58.1 ¥50.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
NTC Thermistors THERMISTOR, U.S. SENSOR SM502F1K Littelfuse 1: ¥222.6 103In Stock	Mfr. Part # SM502F1K Mouser Part # 803-SM502F1K	Littelfuse	NTC Thermistors THERMISTOR, U.S. SENSOR Learn More about Littelfuse surface mount thermistors	Datasheet	103In Stock	¥222.6 ¥210.9 ¥199.3 ¥189.4 View ¥182.7 ¥164.6 ¥157.5 ¥147	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 60A 600VAC 250VDC Time-Delay CCMR060.T Littelfuse 1: ¥17,699.6 23In Stock	Mfr. Part # CCMR060.T Mouser Part # 576-CCMR060.T	Littelfuse	Industrial & Electrical Fuses 60A 600VAC 250VDC Time-Delay Learn More about Littelfuse hvac protection control solutions	Datasheet	23In Stock	¥17,699.6 ¥14,812.8 ¥13,658.4 ¥11,034 View ¥10,336.4 Quote	Min.: 1 Mult.: 1	No
ESD Protection Diodes / TVS Diodes TVS AXIAL HI-POWER 15KPA100A Littelfuse 1: ¥1,955 192In Stock	Mfr. Part # 15KPA100A Mouser Part # 576-15KPA100A	Littelfuse	ESD Protection Diodes / TVS Diodes TVS AXIAL HI-POWER Learn More about Littelfuse tvsdiodes	Datasheet	192In Stock	Cut Tape ¥1,955 ¥1,159.4 ¥1,121.2 ¥1,046.4 Reel ¥1,046.4	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes TVS AXIAL HI-POWER 15KPA18A Littelfuse 1: ¥1,752.4 72In Stock 800Expected 12/23/2026	Mfr. Part # 15KPA18A Mouser Part # 576-15KPA18A	Littelfuse	ESD Protection Diodes / TVS Diodes TVS AXIAL HI-POWER Learn More about Littelfuse tvsdiodes	Datasheet	72In Stock 800Expected 12/23/2026	Cut Tape ¥1,752.4 ¥1,092.9 ¥945.1 ¥792.3 Reel ¥792.3	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes TVS AXIAL HI-POWER 15KPA200A Littelfuse 1: ¥2,094.5 102In Stock 800Expected 3/4/2027	Mfr. Part # 15KPA200A Mouser Part # 576-15KPA200A	Littelfuse	ESD Protection Diodes / TVS Diodes TVS AXIAL HI-POWER Learn More about Littelfuse tvsdiodes	Datasheet	102In Stock 800Expected 3/4/2027	Cut Tape ¥2,094.5 ¥1,514.8 ¥1,229.1 ¥1,189.3 ¥1,046.4 Reel ¥1,046.4	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes TVSAXIAL LEAD HI-PWR 15KPA200A-B Littelfuse 1: ¥1,715.8 56In Stock	Mfr. Part # 15KPA200A-B Mouser Part # 576-15KPA200A-B	Littelfuse	ESD Protection Diodes / TVS Diodes TVSAXIAL LEAD HI-PWR Learn More about Littelfuse tvsdiodes	Datasheet	56In Stock	¥1,715.8 ¥1,083 ¥1,046.4	Min.: 1 Mult.: 1

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AC Protection & Motor Control in HVAC Solutions

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