Circuit Protection – Mouser Japan

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Industrial Manufacturing & Processing Portfolio

Littelfuse Industrial Manufacturing and Processing Portfolio encompasses protection, control, and sensing products, including fuses, protection relays, DC disconnect switches, surge protective devices, and temperature sensors. These products safeguard equipment from damage and personnel from injury due to electrical faults, while reducing costs and minimizing downtime. These devices also limit equipment damage and improve productivity.

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Types of Circuit Protection

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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.
Industrial & Electrical Fuses 2A 600VAC 300VDC Fast Acting KLKR002.T Littelfuse 1: ¥4,403.3 1,170In Stock	Mfr. Part # KLKR002.T Mouser Part # 576-KLKR002.T	Littelfuse	Industrial & Electrical Fuses 2A 600VAC 300VDC Fast Acting Learn More about Littelfuse protection products for panels	Datasheet	1,170In Stock	¥4,403.3 ¥4,036.2 ¥4,034.6 ¥3,341.9 View ¥3,079.5 ¥2,762.2 ¥2,541.3 Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 1.25A 600VAC 300VDC Slo-Blo KLDR1.25TXP Littelfuse 1: ¥6,786.8 93In Stock	Mfr. Part # KLDR1.25TXP Mouser Part # 576-KLDR1.25TXP	Littelfuse	Industrial & Electrical Fuses 1.25A 600VAC 300VDC Slo-Blo Learn More about Littelfuse industrial portfolio	Datasheet	93In Stock	¥6,786.8 ¥5,645.7 ¥4,672.4 ¥4,137.6 View ¥3,813.7 ¥3,712.3 Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 1.5A 600VAC 300VDC Fast Acting KLKR01.5T Littelfuse 1: ¥5,270.4 148In Stock	Mfr. Part # KLKR01.5T Mouser Part # 576-KLKR01.5T	Littelfuse	Industrial & Electrical Fuses 1.5A 600VAC 300VDC Fast Acting Learn More about Littelfuse industrial portfolio	Datasheet	148In Stock	¥5,270.4 ¥4,388.4 ¥2,509.8 ¥2,479.9	Min.: 1 Mult.: 1
NTC Thermistors NTC THERMISTOR 100K OHM 0.5C MELF HM104J1A Littelfuse 1: ¥270.7 5,244In Stock	Mfr. Part # HM104J1A Mouser Part # 576-HM104J1A	Littelfuse	NTC Thermistors NTC THERMISTOR 100K OHM 0.5C MELF Learn More about Littelfuse surface mount thermistors	Datasheet	5,244In Stock	¥270.7 ¥237.5 ¥209.3 ¥202.6 View ¥192.7 ¥176.1 ¥167.8 ¥160.5 ¥148.2	Min.: 1 Mult.: 1
Industrial & Electrical Fuses .3A 600VAC 300VDC Slo-Blo KLDR.300TXP Littelfuse 1: ¥5,654 71In Stock	Mfr. Part # KLDR.300TXP Mouser Part # 576-KLDR.300TXP	Littelfuse	Industrial & Electrical Fuses .3A 600VAC 300VDC Slo-Blo Learn More about Littelfuse industrial portfolio	Datasheet	71In Stock	¥5,654 ¥5,042.8 ¥4,519.6 ¥4,182.4 View ¥3,715.7 ¥3,692.4 Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 350A 500VAC 500VDC FF L50QS POWR-SPEED L50QS350.V Littelfuse 1: ¥22,275.7 60In Stock	Mfr. Part # L50QS350.V Mouser Part # 576-L50QS350.V	Littelfuse	Industrial & Electrical Fuses 350A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	60In Stock	¥22,275.7 ¥18,123.2 ¥16,656.5 ¥15,123.4	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 3A 600VAC 300VDC Slo-Blo KLDR003.TXP Littelfuse 1: ¥6,159 646In Stock	Mfr. Part # KLDR003.TXP Mouser Part # 576-KLDR003.TXP	Littelfuse	Industrial & Electrical Fuses 3A 600VAC 300VDC Slo-Blo Learn More about Littelfuse industrial portfolio	Datasheet	646In Stock	¥6,159 ¥5,112.6 ¥3,704 ¥3,305.4 View ¥3,049.6 ¥2,895.1 ¥2,881.8	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 90A 500VAC 500VDC FF L50QS POWR-SPEED L50QS090.T Littelfuse 1: ¥9,393 44In Stock	Mfr. Part # L50QS090.T Mouser Part # 576-L50QS090.T	Littelfuse	Industrial & Electrical Fuses 90A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	44In Stock	¥9,393 ¥8,226.9 ¥6,658.9 ¥6,389.9 ¥6,124.1	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 600A 700VAC 700VDC FF L70QS POWR-SPEED L70QS600.X Littelfuse 1: ¥57,583.5 16In Stock	Mfr. Part # L70QS600.X Mouser Part # 576-L70QS600.X	Littelfuse	Industrial & Electrical Fuses 600A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	16In Stock	¥57,583.5 ¥48,320.2	Min.: 1 Mult.: 1
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 200A PSR070UL0200Z Littelfuse 1: ¥58,737.9 18In Stock	Mfr. Part # PSR070UL0200Z Mouser Part # 576-PSR070UL0200Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 200A Learn More about Littelfuse psr fuses	Datasheet	18In Stock	¥58,737.9 ¥51,828.2 ¥50,230.3	Min.: 1 Mult.: 1
NTC Thermistors NTC THRM GLASS BEAD 3977 30K 10% GS303J1K Littelfuse 1: ¥229.2 2,728In Stock	Mfr. Part # GS303J1K Mouser Part # 576-GS303J1K	Littelfuse	NTC Thermistors NTC THRM GLASS BEAD 3977 30K 10% Learn More about Littelfuse renewable energy	Datasheet	2,728In Stock	¥229.2 ¥219.3 ¥206 ¥196 View ¥187.7 ¥171.1 ¥147.3 ¥128.9	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 80A L75QS080.V Littelfuse 1: ¥22,960 25In Stock	Mfr. Part # L75QS080.V Mouser Part # 576-L75QS080.V	Littelfuse	Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 80A Learn More about Littelfuse hvac protection control solutions	Datasheet	25In Stock	¥22,960 ¥19,038.4 ¥17,556.8 ¥14,940.7 View ¥14,482.3 Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 40A 750V L75QS040.V Littelfuse 1: ¥16,370.8 77In Stock	Mfr. Part # L75QS040.V Mouser Part # 576-L75QS040.V	Littelfuse	Industrial & Electrical Fuses 40A 750V Learn More about Littelfuse hvac protection control solutions	Datasheet	77In Stock	¥16,370.8 ¥13,420.9 ¥11,612.1 ¥10,710.1 ¥10,289.9	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 750V FAST BLOW 70A L75QS070.V Littelfuse 1: ¥18,875.6 20In Stock	Mfr. Part # L75QS070.V Mouser Part # 576-L75QS070.V	Littelfuse	Industrial & Electrical Fuses 750V FAST BLOW 70A Learn More about Littelfuse hvac protection control solutions	Datasheet	20In Stock	¥18,875.6 ¥14,836.1 ¥14,183.3 ¥13,196.6	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 25A 600VAC J Fuses 0JLS025.T Littelfuse 1: ¥6,630.7 155In Stock	Mfr. Part # 0JLS025.T Mouser Part # 576-0JLS025.T	Littelfuse	Industrial & Electrical Fuses 25A 600VAC J Fuses Learn More about Littelfuse hvacr solutions	Datasheet	155In Stock	¥6,630.7 ¥5,939.7 ¥4,865.1 ¥4,403.3	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 125A L75QS125.V Littelfuse 1: ¥25,401.7 52In Stock	Mfr. Part # L75QS125.V Mouser Part # 576-L75QS125.V	Littelfuse	Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 125A Learn More about Littelfuse hvac protection control solutions	Datasheet	52In Stock	¥25,401.7 ¥20,116.4 ¥18,197.9 ¥17,614.9	Min.: 1 Mult.: 1
NTC Thermistors THERMISTOR KC103J2F Littelfuse 1: ¥697.6 4,388In Stock	Mfr. Part # KC103J2F Mouser Part # 576-KC103J2F	Littelfuse	NTC Thermistors THERMISTOR Learn More about Littelfuse renewable energy	Datasheet	4,388In Stock	¥697.6 ¥624.5 ¥598 ¥566.4 View ¥543.1 ¥523.2 ¥473.4 ¥420.2	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 450A 700VAC 700VDC FF L70QS POWR-SPEED L70QS450.X Littelfuse 1: ¥58,028.7 5In Stock	Mfr. Part # L70QS450.X Mouser Part # 576-L70QS450.X	Littelfuse	Industrial & Electrical Fuses 450A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	5In Stock	¥58,028.7 ¥51,427.9	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 200A L75QS200.V Littelfuse 1: ¥25,762.1 74In Stock	Mfr. Part # L75QS200.V Mouser Part # 576-L75QS200.V	Littelfuse	Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 200A Learn More about Littelfuse hvac protection control solutions	Datasheet	74In Stock	¥25,762.1 ¥21,745.8 ¥18,742.7 ¥17,096.7	Min.: 1 Mult.: 1
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 500A PSR072DL0500X Littelfuse 1: ¥92,341.6 5In Stock	Mfr. Part # PSR072DL0500X Mouser Part # 576-PSR072DL0500X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 500A Learn More about Littelfuse psr fuses	Datasheet	5In Stock	¥92,341.6 ¥72,771.7 ¥66,396.8 Quote Quote	Min.: 1 Mult.: 1
NTC Thermistors NTC THERMISTOR 5K OHM 10% GLASS BEAD GL502F5J Littelfuse 1: ¥317.3 215In Stock	Mfr. Part # GL502F5J Mouser Part # 576-GL502F5J	Littelfuse	NTC Thermistors NTC THERMISTOR 5K OHM 10% GLASS BEAD Learn More about Littelfuse industrial portfolio	Datasheet	215In Stock	¥317.3 ¥239.2 ¥191 ¥179.4 View ¥176.1 ¥118.9	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 750V FAST BLOW 250A L75QS250.X Littelfuse 1: ¥46,453.2 14In Stock	Mfr. Part # L75QS250.X Mouser Part # 576-L75QS250.X	Littelfuse	Industrial & Electrical Fuses 750V FAST BLOW 250A Learn More about Littelfuse hvac protection control solutions	Datasheet	14In Stock	¥46,453.2 ¥38,581.7 ¥35,613.5 ¥32,984.1	Min.: 1 Mult.: 1
NTC Thermistors THERMISTOR, US SENSOR 503JL1A Littelfuse 1: ¥294 201In Stock 500Expected 12/8/2026	Mfr. Part # 503JL1A Mouser Part # 803-503JL1A	Littelfuse	NTC Thermistors THERMISTOR, US SENSOR Learn More about Littelfuse jl do 35	Datasheet	201In Stock 500Expected 12/8/2026	¥294 ¥280.7 ¥237.5 ¥232.5 View ¥214.3 ¥189.4 ¥182.7 ¥176.1 ¥162.9	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 30A 250VAC 250VDC FF L25S POWR-SPEED L25S030.T Littelfuse 1: ¥6,685.5 38In Stock	Mfr. Part # L25S030.T Mouser Part # 576-L25S030.T	Littelfuse	Industrial & Electrical Fuses 30A 250VAC 250VDC FF L25S POWR-SPEED Learn More about Littelfuse fast acting high speed fuses	Datasheet	38In Stock	¥6,685.5 ¥6,042.7 ¥5,796.9 ¥5,162.4 ¥3,758.8	Min.: 1 Mult.: 1
NTC Thermistors 10K OHM 10% EPOXY COATED DC103G2K Littelfuse 1: ¥235.9 189In Stock	Mfr. Part # DC103G2K Mouser Part # 803-DC103G2K	Littelfuse	NTC Thermistors 10K OHM 10% EPOXY COATED Learn More about Littelfuse renewable energy	Datasheet	189In Stock	¥235.9 ¥177.7 ¥141.7 ¥133.2 View ¥130.1 ¥104.3 ¥99.8 ¥95.7	Min.: 1 Mult.: 1