POWR-SPEED Circuit Breakers, Surge Protectors & Fuses

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A ESR3XLUB0315XI Littelfuse 1: $584.46 2In Stock 1Expected 30/11/2026 New Product	Mfr. Part No. ESR3XLUB0315XI Mouser Part No 576-ESR3XLUB0315XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A Learn More about Littelfuse esr high speed square body fuses	Datasheet	2In Stock 1Expected 30/11/2026	$584.46 $479.91 $436.72	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A ESR3XLDB0315XI Littelfuse 1: $579.74 3In Stock New Product	Mfr. Part No. ESR3XLDB0315XI Mouser Part No 576-ESR3XLDB0315XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	$579.74 $476.03 $433.19	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 400A ESR3XLUB0400XI Littelfuse 1: $596.39 3In Stock New Product	Mfr. Part No. ESR3XLUB0400XI Mouser Part No 576-ESR3XLUB0400XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 400A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	$596.39 $489.71 $445.76 Quote Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A ESR3XLUB0500XI Littelfuse 1: $608.50 3In Stock New Product	Mfr. Part No. ESR3XLUB0500XI Mouser Part No 576-ESR3XLUB0500XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	$608.50 $517.93 $464.29	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A ESR3XLUB0250XI Littelfuse 1: $522.42 3In Stock New Product	Mfr. Part No. ESR3XLUB0250XI Mouser Part No 576-ESR3XLUB0250XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	$522.42 $428.96 $390.36	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 350A 500VAC 500VDC FF L50QS POWR-SPEED L50QS350.V Littelfuse 1: $134.11 56In Stock	Mfr. Part No. L50QS350.V Mouser Part No 576-L50QS350.V	Littelfuse	Industrial & Electrical Fuses 350A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	56In Stock	$134.11 $109.11 $100.28 $91.05	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 450A 700VAC 700VDC FF L70QS POWR-SPEED L70QS450.X Littelfuse 1: $357.12 5In Stock	Mfr. Part No. L70QS450.X Mouser Part No 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	$357.12 $311.12	Min.: 1 Mult.: 1
Industrial & Electrical Fuses SQB SIZE 1XL DIN BL 125A PSX1XLDB0125X Littelfuse 1: $428.07 14In Stock	Mfr. Part No. PSX1XLDB0125X Mouser Part No 576-PSX1XLDB0125X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 1XL DIN BL 125A Learn More about Littelfuse psx square body fuses	Datasheet	14In Stock	$428.07 $351.50 $288.35 Quote Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses SQB SIZE 1XL DIN BL 630A PSX1XLDB0630X Littelfuse 1: $718.88 1In Stock 12Expected 17/12/2026	Mfr. Part No. PSX1XLDB0630X Mouser Part No 576-PSX1XLDB0630X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 1XL DIN BL 630A Learn More about Littelfuse psx square body fuses	Datasheet	1In Stock 12Expected 17/12/2026	$718.88 $612.87 $525.68 Quote Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 90A 500VAC 500VDC FF L50QS POWR-SPEED L50QS090.T Littelfuse 1: $66.99 43In Stock	Mfr. Part No. L50QS090.T Mouser Part No 576-L50QS090.T	Littelfuse	Industrial & Electrical Fuses 90A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	43In Stock	$66.99 $56.28 $55.60 $41.83 View $39.68 $36.87	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 100A 500VAC 500VDC FF L50QS POWR-SPEED L50QS100.T Littelfuse 1: $61.63 286In Stock 90Expected 17/11/2026	Mfr. Part No. L50QS100.T Mouser Part No 576-L50QS100.T	Littelfuse	Industrial & Electrical Fuses 100A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	286In Stock 90Expected 17/11/2026	$61.63 $52.93 $47.42 $43.30 View $39.72 $36.87	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 150A 500VAC 500VDC FF L50QS POWR-SPEED L50QS150.V Littelfuse 1: $96.36 115In Stock	Mfr. Part No. L50QS150.V Mouser Part No 576-L50QS150.V	Littelfuse	Industrial & Electrical Fuses 150A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	115In Stock	$96.36 $82.68 $77.12 $65.08 View $59.92 Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 200A 500VAC 500VDC FF L50QS POWR-SPEED L50QS200.V Littelfuse 1: $101.02 29In Stock	Mfr. Part No. L50QS200.V Mouser Part No 576-L50QS200.V	Littelfuse	Industrial & Electrical Fuses 200A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	29In Stock	$101.02 $83.78 $77.27 $63.92 $59.04	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 250A 500VAC 500VDC FF L50QS POWR-SPEED L50QS250.V Littelfuse 1: $160.63 20In Stock	Mfr. Part No. L50QS250.V Mouser Part No 576-L50QS250.V	Littelfuse	Industrial & Electrical Fuses 250A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	20In Stock	$160.63 $133.21 $122.84 $101.61 $93.54	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 300A 500VAC 500VDC FF L50QS POWR-SPEED L50QS300.V Littelfuse 1: $160.63 27In Stock 33Expected 07/01/2027	Mfr. Part No. L50QS300.V Mouser Part No 576-L50QS300.V	Littelfuse	Industrial & Electrical Fuses 300A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	27In Stock 33Expected 07/01/2027	$160.63 $133.21 $122.84 $101.61 $93.54	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 600A 500VAC 500VDC FF L50QS POWR-SPEED L50QS600.X Littelfuse 1: $239.14 56In Stock	Mfr. Part No. L50QS600.X Mouser Part No 576-L50QS600.X	Littelfuse	Industrial & Electrical Fuses 600A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	56In Stock	$239.14 $198.24 $182.76 $151.02	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 100A 700VAC 700VDC FF L70QS POWR-SPEED L70QS100.V Littelfuse 1: $131.52 21In Stock	Mfr. Part No. L70QS100.V Mouser Part No 576-L70QS100.V	Littelfuse	Industrial & Electrical Fuses 100A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	21In Stock	$131.52 $112.54 $103.97 $83.17 $76.56	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 200A 700VAC 700VDC FF L70QS POWR-SPEED L70QS200.V Littelfuse 1: $185.37 38In Stock	Mfr. Part No. L70QS200.V Mouser Part No 576-L70QS200.V	Littelfuse	Industrial & Electrical Fuses 200A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	38In Stock	$185.37 $157.18 $145.12 $117.12	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 600A 700VAC 700VDC FF L70QS POWR-SPEED L70QS600.X Littelfuse 1: $411.32 13In Stock	Mfr. Part No. L70QS600.X Mouser Part No 576-L70QS600.X	Littelfuse	Industrial & Electrical Fuses 600A 700VAC 700VDC FF L70QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	13In Stock	$411.32 $353.31 $319.08 Quote Quote	Min.: 1 Mult.: 1
Fuse Holder Accessories IND SWITCH 1000V NO/NC for 4A, 250Vac MS3H1000C Littelfuse 1: $53.94 108In Stock 15Expected 09/11/2026	Mfr. Part No. MS3H1000C Mouser Part No 576-MS3H1000C	Littelfuse	Fuse Holder Accessories IND SWITCH 1000V NO/NC for 4A, 250Vac	Datasheet	108In Stock 15Expected 09/11/2026	$53.94 $43.80 $40.41 $34.07 View $31.40 $30.64 Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 450A PSX1XLFL0450X Littelfuse 1: $671.67 6In Stock 12Expected 21/01/2027	Mfr. Part No. PSX1XLFL0450X Mouser Part No 576-PSX1XLFL0450X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 450A Learn More about Littelfuse psx square body fuses	Datasheet	6In Stock 12Expected 21/01/2027	$671.67 $576.82 $489.44 Quote Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 60A 500VAC 500VDC FF L50QS POWR-SPEED L50QS060.T Littelfuse 1: $65.40 11In Stock 16Expected 10/11/2026	Mfr. Part No. L50QS060.T Mouser Part No 576-L50QS060.T	Littelfuse	Industrial & Electrical Fuses 60A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	11In Stock 16Expected 10/11/2026	$65.40 $56.74 $52.54 $40.61 View $37.40 $33.52	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 80A 500VAC 500VDC FF L50QS POWR-SPEED L50QS080.T Littelfuse 1: $72.67 2In Stock 12Expected 31/12/2026	Mfr. Part No. L50QS080.T Mouser Part No 576-L50QS080.T	Littelfuse	Industrial & Electrical Fuses 80A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	2In Stock 12Expected 31/12/2026	$72.67 $60.26 $55.60 $46.04 View $42.74 $39.89	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 175A 500VAC 500VDC FF L50QS POWR-SPEED L50QS175.V Littelfuse 1: $101.02 10In Stock	Mfr. Part No. L50QS175.V Mouser Part No 576-L50QS175.V	Littelfuse	Industrial & Electrical Fuses 175A 500VAC 500VDC FF L50QS POWR-SPEED Learn More about Littelfuse qs high speed fuses	Datasheet	10In Stock	$101.02 $83.78 $77.27 $63.92 $59.04	Min.: 1 Mult.: 1
Industrial & Electrical Fuses 500A 500VAC 500VDC FF L50QS POWR-SPEED L50QS500.X Littelfuse 1: $239.14 2In Stock 14Expected 31/12/2026	Mfr. Part No. L50QS500.X Mouser Part No 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 31/12/2026	$239.14 $198.24 $182.76 $151.02	Min.: 1 Mult.: 1