Littelfuse 0215001.MXP Ceramic Fuse 1A 250VAC 5x20mm - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0215001.MXP is a 1 A, 250 V AC ceramic cartridge fuse in 5mm x 20mm package format, designed for applications requiring slow-blow response characteristics. This fuse is part of the Series 215 product line and maintains active product status with full compliance to international safety standards including CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE certifications. Substitute parts are identified when equivalent electrical parameters, mechanical dimensions, and approval agencies align with the main part specifications, ensuring direct interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Current Rating	1 A
Voltage Rating (AC)	250 V
Package / Case	5mm x 20mm
Fuse Type	Cartridge, Ceramic
Response Time	Slow Blow
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	1.5 kA
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 0215001.MXP are classified based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

Current Rating: 1 A (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Response Time: Slow Blow (exact match required)
Mounting Type: Requires Holder (exact match required)

Secondary Compatibility Factors:

Breaking Capacity @ Rated Voltage: 1.5 kA (preferred alignment)
Operating Temperature Range: -55°C to 125°C (preferred alignment)
Approval Agencies: Overlap with CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE certifications

Parts meeting all primary criteria are classified as direct substitutes. Variations in melting I²t, DC cold resistance, or subset approval agencies do not disqualify substitution when primary electrical and mechanical parameters match.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Package	Response Time	Breaking Capacity (kA)	Melting I²t	DC Cold Resistance (Ω)	Product Status
0215001.MXP	Littelfuse Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.52	0.1515	Active
0215001.HXP	Littelfuse Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.52	0.1515	Active
0215001.TXP	Littelfuse Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.52	0.1515	Active
0215001.VXP	Littelfuse Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.52	0.1515	Active
0285001.HXP	Littelfuse Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.6	Not Specified	Active
0001.2504	SCHURTER Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.1	Not Specified	Active
5HT 1-R	Bel Fuse Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.7	0.2	Active
BK1/S505-1-R	Eaton - Electronics Division	1	250	5mm x 20mm	Slow Blow	1.5	1.28	0.1401	Active
0001.2704.11	SCHURTER Inc.	1	250	5mm x 20mm	Slow Blow	1.5	1.1	Not Specified	Active
0659C1000-12	Bel Fuse Inc.	1	250	5mm x 20mm	Slow Blow	1.5	2.4	0.134	Active
TCC-1A	OptiFuse	1	250	5mm x 20mm	Slow Blow	0.035	1.152	0.197	Active

Engineering Selection Recommendations

All substitute parts listed maintain active product status and comply with international safety standards. Selection among equivalent parts should be based on the following factors:

Littelfuse Series 215 variants (0215001.HXP, 0215001.TXP, 0215001.VXP): These parts are identical to the main part 0215001.MXP in all critical electrical and mechanical parameters. All carry full approval agency compliance (CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE). These represent the highest compatibility option.

Littelfuse Series 285 (0285001.HXP): Maintains equivalent electrical parameters with reduced approval agency scope (PSE only). Melting I²t is 1.6 versus 1.52 for the main part, representing a minor variation within acceptable tolerance for slow-blow ceramic fuse applications.

SCHURTER SPT Series (0001.2504, 0001.2704.11): Both parts support 300 V DC rating in addition to 250 V AC, providing extended voltage capability. Melting I²t is 1.1, lower than the main part. Approval agencies include CCC, cURus, and VDE. These parts are suitable for applications requiring dual AC/DC voltage ratings.

Bel Fuse 5HT Series (5HT 1-R): Carries comprehensive approval agency coverage (CCC, CE, CSA, cURus, IMQ, PSE, SEMKO, VDE). Melting I²t is 1.7, slightly elevated compared to the main part. Physical dimension is 5.10mm diameter versus 5.20mm for the main part, representing a minor tolerance variation.

Bel Fuse 0659C Series (0659C1000-12): Melting I²t is 2.4, the highest among all listed substitutes. Approval agencies include CCC, cURus, PSE, and VDE. This part is suitable for applications where extended thermal response is acceptable.

Eaton S505 Series (BK1/S505-1-R): Carries the broadest approval agency coverage (BSI, CCC/CQC, CSA, cURus, IMQ, KC, PSE/JET, SEMKO, VDE). DC cold resistance is 0.1401 Ω, the lowest among all parts. This part is recommended for applications requiring maximum international certification scope.

OptiFuse TCC Series (TCC-1A): Breaking capacity is 0.035 kA, significantly lower than the 1.5 kA rating of the main part. Approval is limited to cULus and UL 248. This part is not recommended as a direct substitute due to reduced breaking capacity.

Frequently Asked Questions (FAQ)

Q: Can I use 0215001.HXP, 0215001.TXP, or 0215001.VXP as direct replacements for 0215001.MXP?

A: Yes. These Littelfuse Series 215 variants are electrically and mechanically identical to the main part. All parameters including current rating, voltage rating, package dimensions, response time, breaking capacity, and approval agencies are equivalent. These represent the highest compatibility substitutes.

Q: What is the difference between the Littelfuse Series 215 and Series 285 fuses?

A: Both series maintain identical electrical parameters (1 A, 250 V AC, slow-blow response, 5mm x 20mm package). The primary difference is approval agency scope. Series 215 carries full compliance (CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE), while Series 285 is limited to PSE certification. Melting I²t for Series 285 is 1.6 versus 1.52 for Series 215, a minor variation acceptable for most applications.

Q: Can I use SCHURTER 0001.2504 or 0001.2704.11 in place of the Littelfuse 0215001.MXP?

A: These SCHURTER parts meet all primary substitution criteria (1 A, 250 V AC, 5mm x 20mm, slow-blow, 1.5 kA breaking capacity). An additional advantage is 300 V DC rating capability. Melting I²t is 1.1, lower than the main part. Approval agencies include CCC, cURus, and VDE. These parts are suitable substitutes for applications where dual AC/DC voltage operation is beneficial.

Q: What is the significance of melting I²t variation among substitute parts?

A: Melting I²t defines the thermal energy required to melt the fuse element. The main part 0215001.MXP has melting I²t of 1.52. Substitutes range from 1.1 to 2.4. Lower values (SCHURTER parts at 1.1) provide faster thermal response, while higher values (0659C1000-12 at 2.4) provide extended thermal tolerance. Selection depends on circuit protection requirements and inrush current characteristics of the protected device.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant, matching the environmental compliance status of the main part 0215001.MXP.

Q: Which substitute part has the broadest international approval coverage?

A: The Eaton BK1/S505-1-R carries the most comprehensive approval agency scope, including BSI, CCC/CQC, CSA, cURus, IMQ, KC, PSE/JET, SEMKO, and VDE certifications. This part is recommended for applications requiring maximum international certification alignment.

Q: Why is the OptiFuse TCC-1A not recommended as a substitute?

A: While the OptiFuse TCC-1A matches current rating, voltage rating, package dimensions, and response time, its breaking capacity is 0.035 kA, significantly lower than the 1.5 kA rating of the main part and all other substitutes. This reduced breaking capacity disqualifies it as a direct substitute for applications requiring standard 1.5 kA protection capability.

Q: Can I use parts with different DC cold resistance values interchangeably?

A: DC cold resistance variation among substitutes ranges from 0.1401 Ω to 0.2 Ω. These variations are minor and do not affect fuse function in standard circuit protection applications. Selection based on DC cold resistance is not a primary substitution criterion when all other electrical and mechanical parameters match.

Q: What should I verify before implementing a substitute part?

A: Verify that the substitute part meets all primary criteria: 1 A current rating, 250 V AC voltage rating, 5mm x 20mm package dimensions, ceramic cartridge type, slow-blow response, and holder-based mounting. Confirm that approval agencies relevant to your application region are present on the substitute part. Review melting I²t and breaking capacity to ensure alignment with circuit protection requirements.

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