Littelfuse 0217.250MXP Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0217.250MXP is a 250 mA, 250 V AC/DC fast-blow glass cartridge fuse in 5mm x 20mm form factor. This component is Active status and requires a compatible fuse holder for installation. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and performance characteristics within the 5x20mm cartridge fuse category.

Key Parameters

Parameter	Value
Current Rating	250 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35A
Mounting Type	Requires Holder
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 0217.250MXP is determined by the following mandatory parameters:

Current Rating: 250 mA (exact match required)
Voltage Rating: 250 V AC (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Fast Blow (exact match required)
Breaking Capacity: 35A (exact match required)

Parts meeting all these criteria are classified as direct substitutes. Variations in secondary parameters such as Melting I²t, DC Cold Resistance, and approval agency certifications do not disqualify substitution eligibility when primary electrical and mechanical parameters align.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating (mA)	Voltage (V AC)	Response Time	Package	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ω)	Approval Agencies	Inventory (Pcs)
0217.250MXP	Littelfuse Inc.	217	250	250	Fast Blow	5x20mm	35	0.04	1.2325	CCC, CE, CSA, K-MARK, SEMKO, UL, VDE	1963
0217.250HXP	Littelfuse Inc.	217	250	250	Fast Blow	5x20mm	35	0.04	1.2325	CCC, CE, CSA, K-MARK, SEMKO, UL, VDE	2215
0217.250TXP	Littelfuse Inc.	217	250	250	Fast Blow	5x20mm	35	0.04	1.2325	CCC, CE, CSA, KC, SEMKO, UL, VDE	1113
0235.250HXP	Littelfuse Inc.	235	250	250	Fast Blow	5x20mm	35	0.0166	2.25	CE, CSA, KC, UL	1314
0235.250MXP	Littelfuse Inc.	235	250	250	Fast Blow	5x20mm	35	0.0166	2.25	CE, CSA, KC, UL	1196
0034.1510	SCHURTER Inc.	FSF 5x20	250	250	Fast Blow	5x20mm	35	0.0159	—	CCC, cURus, VDE	1296
BK/S500-250-R	Eaton - Electronics Division	S500	250	250	Fast Blow	5x20mm	35	0.28	4.3	BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE	1150
S500-250-R	Eaton - Electronics Division	S500	250	250	Fast Blow	5x20mm	35	0.28	4.3	BSI, CCC, CSA, cURus, IMQ, SEMKO, VDE	805
FSD-250MA	OptiFuse	FSD	250	250	Fast Blow	5x20mm	35	0.0272	—	cURus, IEC 60127	1784

Engineering Selection Recommendations

All listed substitute parts meet the mandatory electrical and mechanical parameters for direct substitution with the 0217.250MXP. Selection among equivalents should be based on:

Certification Alignment: The 0217.250MXP carries CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE approvals. Parts 0217.250HXP and 0217.250TXP maintain the same certification scope within the Littelfuse 217 series. The 0235 series (0235.250HXP, 0235.250MXP) carries a reduced certification set (CE, CSA, KC, UL). The SCHURTER 0034.1510 carries CCC, cURus, and VDE. Eaton S500 variants carry the broadest certification portfolio including BSI, CCC, CSA, cULus, IMQ, SEMKO, and VDE. OptiFuse FSD-250MA carries cURus and IEC 60127 certifications.

Series Consistency: Within-manufacturer substitution (0217.250MXP to 0217.250HXP or 0217.250TXP) maintains series continuity and identical secondary electrical characteristics.

Availability: Inventory levels vary across all substitutes, ranging from 805 to 2215 pieces in stock.

Product Status: All listed parts maintain Active status.

Frequently Asked Questions (FAQ)

Q: Can 0217.250HXP replace 0217.250MXP directly?

A: Yes. Both parts are Littelfuse 217 series with identical current rating (250 mA), voltage rating (250 V AC), package (5x20mm), response time (fast blow), breaking capacity (35A), and operating temperature range (-55°C to 125°C). Melting I²t and DC cold resistance values are identical.

Q: What is the difference between Littelfuse 217 and 235 series fuses?

A: Both series meet the same electrical and mechanical substitution criteria for the 0217.250MXP. The 235 series exhibits different Melting I²t (0.0166 vs. 0.04) and DC cold resistance (2.25 Ω vs. 1.2325 Ω) values. Certification scope differs: 235 series carries CE, CSA, KC, and UL approvals, while 217 series includes CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE.

Q: Can I use SCHURTER 0034.1510 as a substitute?

A: Yes. The SCHURTER 0034.1510 meets all mandatory substitution parameters: 250 mA current rating, 250 V AC voltage rating, 5x20mm package, fast-blow response, and 35A breaking capacity. Melting I²t is 0.0159. Certifications include CCC, cURus, and VDE.

Q: What are the differences between Eaton S500 variants BK/S500-250-R and S500-250-R?

A: Both Eaton S500 variants are electrically and mechanically equivalent to the 0217.250MXP with identical current, voltage, package, and breaking capacity ratings. BK/S500-250-R carries MSL 1 (Unlimited) moisture sensitivity level, while S500-250-R lists MSL as Not Applicable. Both carry identical certifications and Melting I²t (0.28) and DC cold resistance (4.3 Ω) values.

Q: Is OptiFuse FSD-250MA compatible with the same fuse holder?

A: Yes. The FSD-250MA maintains the 5x20mm package dimension, matching the mechanical requirements of the 0217.250MXP holder. Electrical ratings (250 mA, 250 V AC, fast blow, 35A breaking capacity) are identical.

Q: Which substitute offers the broadest certification coverage?

A: Eaton S500 series (BK/S500-250-R and S500-250-R) carries the most comprehensive certification portfolio: BSI, CCC, CSA, cULus, IMQ, SEMKO, and VDE.

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