Name: R-Rated Series - Medium Voltage Fuses
Brand: Littelfuse Inc.

R-Rated Series - Medium Voltage Fuses

Series: R-Rated

Questions? Contact Littelfuse Support

Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

R-rated fuses provide required short-circuit protection for medium voltage motors, motor controllers and associated circuitry. These components have limited ability to absorb the energy of large short circuit currents. Medium voltage motor controllers contain overload relays which provide both overload protection and locked rotor protection to the motor. The controllers are also intended to interrupt low value short circuits within the capability of the motor controller. This protects the medium voltage R-rated fuse from sustained overcurrents which are less than their minimum interrupting rating.

NEMA Standards for R-rated medium voltage power fuses require that they operate within 15-35 seconds when subjected to an rms current 100 times the 'R' rating. For example, a fuse with a 2R rating will open within 15 to 35 seconds on an applied current of 2 x 100 = 200 amperes.

Options

Hermetically sealed for use in hazardous locations (add “S” suffix to part number)
Bolt-in mounting configuration. For hookeye attachment; add ‘W’ suffix to part number.

Live Parts

Live parts and mounting clips are available for mounting R-rated single, double, and triple barrel fuses. Note, all clips are sold in pairs.

Access specifications, certifications, check availability and order parts below

Catalog #	Amps (A)	Interrupting Rating	VAC (V)	Stock	Samples

1003R1B2.75	100	80 kA @ 2750 Vac	2750	Check	Order
1003R1B5.5	100	80 kA @ 5500 Vac	5500	Check	Order
1003R1BI5.5	100	80 kA @ 5500 Vac	5500	Check	Order
1003R1BI8.25	100	80 kA @ 8250 Vac	8250	Check	Order
1003R1C2.75	100	80 kA @ 2750 Vac	2750	Check	Order
1003R1C2.75S	100		2750	Check	Order
1003R1C2.75SW	100		2750	Check	Order
1003R1C2.75W	100	80 kA @ 2750 Vac	2750	Check	Order
1003R1C3.8	100	80 kA @ 3800 Vac	3800	Check	Order
1003R1C5.5	100	80 kA @ 5500 Vac	5500	Check	Order
1003R1C5.5S	100		5500	Check	Order
1003R1C5.5SW	100		5500	Check	Order
1003R1C5.5W	100	80 kA @ 5500 Vac	5500	Check	Order
1003R1C5.5X	100	80 kA @ 5500 Vac	5500	Check	Order
1003R1C5.5XS	100		5500	Check	Order
1003R1C5.5XSW	100		5500	Check	Order
1003R1C5.5XW	100	80 kA @ 5500 Vac	5500	Check	Order
1003R1C8.25	100	80 kA @ 8250 Vac	8250	Check	Order
1003R1C8.25S	100		8250	Check	Order
1003R1C8.25SW	100		8250	Check	Order
1003R1C8.25W	100	80 kA @ 8250 Vac	8250	Check	Order
1003R1IB2.75				Check	Order
1003R1IB5.5	100	80 kA @ 5500 Vac	5500	Check	Order
1304R1B2.75	130	80 kA @ 2750 Vac	2750	Check	Order
1304R1B5.5	130	80 kA @ 5500 Vac	5500	Check	Order
1304R1BI5.5	130	80 kA @ 5500 Vac	5500	Check	Order
1304R1BI8.25	130	80 kA @ 8250 Vac	8250	Check	Order
1304R1C2.75	130	80 kA @ 2750 Vac	2750	Check	Order
1304R1C2.75S	130		2750	Check	Order
1304R1C2.75SW	130		2750	Check	Order
1304R1C2.75W	130	80 kA @ 2750 Vac	2750	Check	Order
1304R1C3.8	130	80 kA @ 3800 Vac	3800	Check	Order
1304R1C5.5	130	80 kA @ 5500 Vac	5500	Check	Order
1304R1C5.5S	130		5500	Check	Order
1304R1C5.5SW	130		5500	Check	Order
1304R1C5.5W	130	80 kA @ 5500 Vac	5500	Check	Order
1304R1C5.5X	130	80 kA @ 5500 Vac	5500	Check	Order
1304R1C5.5XS	130		5500	Check	Order
1304R1C5.5XSW	130		5500	Check	Order
1304R1C5.5XW	130	80 kA @ 5500 Vac	5500	Check	Order
1304R1C8.25	130	80 kA @ 8250 Vac	8250	Check	Order
1304R1C8.25S	130		8250	Check	Order
1304R1C8.25SW	130		8250	Check	Order
1304R1C8.25W	130	80 kA @ 8250 Vac	8250	Check	Order
1304R1IB2.75				Check	Order
1304R1IB5.5	130	80 kA @ 5500 Vac	5500	Check	Order
1505R1B2.75	150	80 kA @ 2750 Vac	2750	Check	Order
1505R1B5.5	150	80 kA @ 5500 Vac	5500	Check	Order
1505R1BI5.5	150	80 kA @ 5500 Vac	5500	Check	Order
1505R1BI8.25	150	80 kA @ 8250 Vac	8250	Check	Order
1505R1C2.75	150	80 kA @ 2750 Vac	2750	Check	Order
1505R1C2.75S	150		2750	Check	Order
1505R1C2.75SW	150		2750	Check	Order
1505R1C2.75W	150	80 kA @ 2750 Vac	2750	Check	Order
1505R1C3.8	150	80 kA @ 3800 Vac	3800	Check	Order
1505R1C5.5	150	80 kA @ 5500 Vac	5500	Check	Order
1505R1C5.5S	150		5500	Check	Order
1505R1C5.5SW	150		5500	Check	Order
1505R1C5.5W	150	80 kA @ 5500 Vac	5500	Check	Order
1505R1C5.5X	150	80 kA @ 5500 Vac	5500	Check	Order
1505R1C5.5XS	150		5500	Check	Order
1505R1C5.5XSW	150		5500	Check	Order
1505R1C5.5XW	150	80 kA @ 5500 Vac	5500	Check	Order
1505R1C8.25	150	80 kA @ 8250 Vac	8250	Check	Order
1505R1C8.25S	150		8250	Check	Order
1505R1C8.25SW	150		8250	Check	Order
1505R1C8.25W	150	80 kA @ 8250 Vac	8250	Check	Order
1505R1IB2.75				Check	Order
1505R1IB5.5	150	80 kA @ 5500 Vac	5500	Check	Order
1706R1B2.75	170	80 kA @ 2750 Vac	2750	Check	Order
1706R1B5.5	170	80 kA @ 5500 Vac	5500	Check	Order
1706R1BI5.5	170	80 kA @ 5500 Vac	5500	Check	Order
1706R1BI8.25	170	80 kA @ 8250 Vac	8250	Check	Order
1706R1C2.75	170	80 kA @ 2750 Vac	2750	Check	Order
1706R1C2.75S	170		2750	Check	Order
1706R1C2.75SW	170		2750	Check	Order
1706R1C2.75W	170	80 kA @ 2750 Vac	2750	Check	Order
1706R1C3.8	170	80 kA @ 3800 Vac	3800	Check	Order
1706R1C5.5	170	80 kA @ 5500 Vac	5500	Check	Order
1706R1C5.5S	170		5500	Check	Order
1706R1C5.5SW	170		5500	Check	Order
1706R1C5.5W	170	80 kA @ 5500 Vac	5500	Check	Order
1706R1C5.5X	170	80 kA @ 5500 Vac	5500	Check	Order
1706R1C5.5XS	170		5500	Check	Order
1706R1C5.5XSW	170		5500	Check	Order
1706R1C5.5XW	170	80 kA @ 5500 Vac	5500	Check	Order
1706R1C8.25	170	80 kA @ 8250 Vac	8250	Check	Order
1706R1C8.25S	170		8250	Check	Order
1706R1C8.25SW	170		8250	Check	Order
1706R1C8.25W	170	80 kA @ 8250 Vac	8250	Check	Order
1706R1IB2.75				Check	Order
1706R1IB5.5	170	80 kA @ 5500 Vac	5500	Check	Order
2009R1B2.75	200	80 kA @ 2750 Vac	2750	Check	Order
2009R1B5.5	200	80 kA @ 5500 Vac	5500	Check	Order
2009R1BI5.5	200	80 kA @ 5500 Vac	5500	Check	Order
2009R1BI8.25	200	80 kA @ 8250 Vac	8250	Check	Order
2009R1C2.75	200	80 kA @ 2750 Vac	2750	Check	Order
2009R1C2.75S	200		2750	Check	Order
2009R1C2.75SW	200		2750	Check	Order
2009R1C2.75W	200	80 kA @ 2750 Vac	2750	Check	Order
2009R1C3.8	200	80 kA @ 3800 Vac	3800	Check	Order
2009R1C5.5	200	80 kA @ 5500 Vac	5500	Check	Order
2009R1C5.5S	200		5500	Check	Order
2009R1C5.5SW	200		5500	Check	Order
2009R1C5.5W	200	80 kA @ 5500 Vac	5500	Check	Order
2009R1C5.5X	200	80 kA @ 5500 Vac	5500	Check	Order
2009R1C5.5XS	200		5500	Check	Order
2009R1C5.5XSW	200		5500	Check	Order
2009R1C5.5XW	200	80 kA @ 5500 Vac	5500	Check	Order
2009R1C8.25	200	80 kA @ 8250 Vac	8250	Check	Order
2009R1C8.25S	200		8250	Check	Order
2009R1C8.25SW	200		8250	Check	Order
2009R1C8.25W	200	80 kA @ 8250 Vac	8250	Check	Order
2009R1IB2.75				Check	Order
2009R1IB5.5	200	80 kA @ 5500 Vac	5500	Check	Order
23012R1B2.75	230	80 kA @ 2750 Vac	2750	Check	Order
23012R1B5.5	230	80 kA @ 5500 Vac	5500	Check	Order
23012R1BI5.5	230	80 kA @ 5500 Vac	5500	Check	Order
23012R1BI8.25	230	80 kA @ 8250 Vac	8250	Check	Order
23012R1C2.75	230	80 kA @ 2750 Vac	2750	Check	Order
23012R1C2.75S	230		2750	Check	Order
23012R1C2.75SW	230		2750	Check	Order
23012R1C2.75W	230	80 kA @ 2750 Vac	2750	Check	Order
23012R1C3.8	230	80 kA @ 3800 Vac	3800	Check	Order
23012R1C5.5	230	80 kA @ 5500 Vac	5500	Check	Order
23012R1C5.5S	230		5500	Check	Order
23012R1C5.5SW	230		5500	Check	Order
23012R1C5.5W	230	80 kA @ 5500 Vac	5500	Check	Order
23012R1C5.5X	230	80 kA @ 5500 Vac	5500	Check	Order
23012R1C5.5XS	230		5500	Check	Order
23012R1C5.5XSW	230		5500	Check	Order
23012R1C5.5XW	230	80 kA @ 5500 Vac	5500	Check	Order
23012R1C8.25	230	80 kA @ 8250 Vac	8250	Check	Order
23012R1C8.25S	230		8250	Check	Order
23012R1C8.25SW	230		8250	Check	Order
23012R1C8.25W	230	80 kA @ 8250 Vac	8250	Check	Order
23012R1IB2.75				Check	Order
23012R1IB5.5	230	80 kA @ 5500 Vac	5500	Check	Order
39018R2B2.75	390	80 kA @ 2750 Vac	2750	Check	Order
39018R2B5.5	390	80 kA @ 5500 Vac	5500	Check	Order
39018R2BI5.5	390	80 kA @ 5500 Vac	5500	Check	Order
39018R2BI8.25	390	80 kA @ 8250 Vac	8250	Check	Order
39018R2C2.75	390	80 kA @ 2750 Vac	2750	Check	Order
39018R2C2.75S	390		2750	Check	Order
39018R2C2.75SW	390		2750	Check	Order
39018R2C2.75W	390	80 kA @ 2750 Vac	2750	Check	Order
39018R2C3.8	390	80 kA @ 3800 Vac	3800	Check	Order
39018R2C5.5	390	80 kA @ 5500 Vac	5500	Check	Order
39018R2C5.5S	390		5500	Check	Order
39018R2C5.5SW	390		5500	Check	Order
39018R2C5.5W	390	80 kA @ 5500 Vac	5500	Check	Order
39018R2C5.5X	390	80 kA @ 5500 Vac	5500	Check	Order
39018R2C5.5XS	390		5500	Check	Order
39018R2C5.5XSW	390		5500	Check	Order
39018R2C5.5XW	390	80 kA @ 5500 Vac	5500	Check	Order
39018R2C8.25	390	80 kA @ 8250 Vac	8250	Check	Order
39018R2C8.25S	390		8250	Check	Order
39018R2C8.25SW	390		8250	Check	Order
39018R2C8.25W	390	80 kA @ 8250 Vac	8250	Check	Order
39018R2IB2.75				Check	Order
39018R2IB5.5	390	80 kA @ 5500 Vac	5500	Check	Order
401R1C3.8	40	80 kA @ 3800 Vac	3800	Check	Order
45024R2B2.75	450	80 kA @ 2750 Vac	2750	Check	Order
45024R2B5.5	450	80 kA @ 5500 Vac	5500	Check	Order
45024R2BI5.5	450	80 kA @ 5500 Vac	5500	Check	Order
45024R2BI8.25	450	80 kA @ 8250 Vac	8250	Check	Order
45024R2C2.75	450	80 kA @ 2750 Vac	2750	Check	Order
45024R2C2.75S	450		2750	Check	Order
45024R2C2.75SW	450		2750	Check	Order
45024R2C2.75W	450	80 kA @ 2750 Vac	2750	Check	Order
45024R2C3.8	450	80 kA @ 3800 Vac	3800	Check	Order
45024R2C5.5	450	80 kA @ 5500 Vac	5500	Check	Order
45024R2C5.5S	450		5500	Check	Order
45024R2C5.5SW	450		5500	Check	Order
45024R2C5.5W	450	80 kA @ 5500 Vac	5500	Check	Order
45024R2C5.5X	450	80 kA @ 5500 Vac	5500	Check	Order
45024R2C5.5XS	450		5500	Check	Order
45024R2C5.5XSW	450		5500	Check	Order
45024R2C5.5XW	450	80 kA @ 5500 Vac	5500	Check	Order
45024R2C8.25	450	80 kA @ 8250 Vac	8250	Check	Order
45024R2C8.25S	450		8250	Check	Order
45024R2C8.25SW	450		8250	Check	Order
45024R2C8.25W	450	80 kA @ 8250 Vac	8250	Check	Order
45024R2IB2.75				Check	Order
45024R2IB5.5	450	80 kA @ 5500 Vac	5500	Check	Order
48026R2BI5.5				Check	Order
48026R2C5.5	480	80 kA @ 5500 Vac	5500	Check	Order
48026R2C5.5S	480		5500	Check	Order
48026R2C5.5W	480		5500	Check	Order
501.5R1C3.8	50	80 kA @ 3800 Vac	3800	Check	Order
55030R2B5.5	550	80 kA @ 5500 Vac	5500	Check	Order
55030R2BI5.5	550	80 kA @ 5500 Vac	5500	Check	Order
55030R2C5.5	550	80 kA @ 5500 Vac	5500	Check	Order
55030R2C5.5S	550		5500	Check	Order
55030R2C5.5X	550		5500	Check	Order
55030R2IB5.5	550	80 kA @ 5500 Vac	5500	Check	Order
55030R3C5.5	550	80 kA @ 5500 Vac	5500	Check	Order
55030R3C5.5S	550		5500	Check	Order
5SB424R	450		5500	Check	Order
5SB430R	550		5500	Check	Order
5SB436R	650		5500	Check	Order
5SB448R	800		5500	Check	Order
60032R2B5.5	600	80 kA @ 5500 Vac	5500	Check	Order
60032R2BI5.5	600	80 kA @ 5500 Vac	5500	Check	Order
60032R2C5.5	600	80 kA @ 5500 Vac	5500	Check	Order
60032R2C5.5S	600		5500	Check	Order
60032R2IB5.5				Check	Order
60032R3C5.5	600	80 kA @ 5500 Vac	5500	Check	Order
60032R3C5.5S	600		5500	Check	Order
65036R2B5.5	650	80 kA @ 5500 Vac	5500	Check	Order
65036R2BI5.5	650	80 kA @ 5500 Vac	5500	Check	Order
65036R2C5.5	650	80 kA @ 5500 Vac	5500	Check	Order
65036R2C5.5S	650		5500	Check	Order
65036R2C5.5SW	650		5500	Check	Order
65036R2C5.5W	650	80 kA @ 5500 Vac	5500	Check	Order
65036R2IB5.5	650	80 kA @ 5500 Vac	5500	Check	Order
65036R3BI5.5				Check	Order
65036R3C5.5	650	80 kA @ 5500 Vac	5500	Check	Order
65036R3C5.5S	650		5500	Check	Order
70038R3C5.5	700	80 kA @ 5500 Vac	5500	Check	Order
70038R3C5.5S	700		5500	Check	Order
702R1B2.75				Check	Order
702R1B5.5	70	80 kA @ 5500 Vac	5500	Check	Order
702R1BI5.5	70	80 kA @ 5500 Vac	5500	Check	Order
702R1BI8.25	70	80 kA @ 8250 Vac	8250	Check	Order
702R1C2.75	70	80 kA @ 2750 Vac	2750	Check	Order
702R1C2.75S	70		2750	Check	Order
702R1C2.75SW	70		2750	Check	Order
702R1C2.75W	70	80 kA @ 2750 Vac	2750	Check	Order
702R1C3.8	70	80 kA @ 3800 Vac	3800	Check	Order
702R1C5.5	70	80 kA @ 5500 Vac	5500	Check	Order
702R1C5.5S	70		5500	Check	Order
702R1C5.5SW	70		5500	Check	Order
702R1C5.5W	70	80 kA @ 5500 Vac	5500	Check	Order
702R1C5.5X	70	80 kA @ 5500 Vac	5500	Check	Order
702R1C5.5XS	70		5500	Check	Order
702R1C5.5XSW	70		5500	Check	Order
702R1C5.5XW	70	80 kA @ 5500 Vac	5500	Check	Order
702R1C8.25	70	80 kA @ 8250 Vac	8250	Check	Order
702R1C8.25S	70		8250	Check	Order
702R1C8.25SW	70		8250	Check	Order
702R1C8.25W	70	80 kA @ 8250 Vac	8250	Check	Order
702R1IB5.5	70	80 kA @ 5500 Vac	5500	Check	Order

	Selecting and Applying Medium Voltage Fuses
	R-Rated Time Current Curves 5.5kV R-Rated 2R-36R Melting Time
	R-Rated Time Current Curves 5.5kV R-Rated 2R-36R Clearing Time
	R-Rated Time Current Curves - 8.25V R-Rated 2R-24R - Clearing Time
	R-Rated Time Current Curve 2.75kV R-Rated 2R-24R - Clearing time
	Rockwell Encompass Brochure
	Littelfuse Rockwell Catalog
	Medium Voltage Datasheet

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R-Rated Series - Medium Voltage Fuses

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