ATM-25LP Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The ATM-25LP is a 25 A, 32 V DC automotive blade fuse manufactured by Eaton - Bussmann Electrical Division. This miniature low-profile fuse is designed for automotive electrical circuits requiring fast-blow response characteristics and operates within a breaking capacity of 1 kA at rated voltage. The part is currently active in production with 1033 units in stock.

Substitute parts are necessary when the original ATM-25LP is unavailable, when alternative certifications are required for specific applications, or when packaging preferences differ between miniature and micro blade form factors while maintaining equivalent electrical performance.

Key Parameters

Parameter	Value
Current Rating	25 A
Voltage Rating - DC	32 V
Fuse Type	Automotive
Response Time	Fast Blow
Package / Case	Blade, Miniature (Low Profile)
Breaking Capacity @ Rated Voltage	1 kA
Size / Dimension	0.430" L x 0.150" W x 0.347" H (10.92mm x 3.81mm x 8.81mm)
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ATM-25LP is determined by the following criteria:

Primary Substitutes (Direct Equivalents): Parts must match all critical parameters: 25 A current rating, 32 V DC voltage rating, fast-blow response, blade miniature package form factor, 1 kA breaking capacity, and RoHS compliance. Littelfuse MINI® 297 series parts 0297025.L, 0297025.U, and 0297025.WXNV meet these requirements with identical electrical specifications and compatible physical dimensions.

Secondary Substitutes (Form Factor Variation): The Littelfuse MICRO2™ 327 series part 0327025.YX2S maintains electrical equivalence (25 A, 32 V DC, fast-blow, 1 kA breaking capacity) but uses a micro blade package form factor with reduced physical dimensions (0.358" L x 0.150" W x 0.311" H). This substitute is applicable only when space constraints permit the smaller package.

Voltage-Rated Variants: The Littelfuse MINI® 997 series part 0997025.WXN provides identical current and package specifications but with elevated DC voltage rating (58 V). This part is suitable only for circuits designed for higher voltage operation and is not interchangeable in 32 V DC applications.

AC/DC Dual-Rated Variants: Littelfuse MINI® series parts 0MIN025.HXGLO, 0MIN025.MXGLO, 0MIN025.V, 0MIN025.VP, and 0MIN025.VPGLO are rated for both 32 V AC and 32 V DC operation. These parts are functionally equivalent for DC-only applications but provide additional AC circuit capability. Physical dimensions and current ratings remain identical to the ATM-25LP.

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage Rating - DC (V)	Response Time	Package / Case	Breaking Capacity (kA)	Size (mm)	RoHS Status	Inventory (Pcs)
ATM-25LP	Eaton - Bussmann	25	32	Fast Blow	Blade, Miniature (Low Profile)	1	10.92 x 3.81 x 8.81	RoHS Compliant	1033
0297025.L	Littelfuse	25	32	Fast Blow	Blade, Miniature	1	10.90 x 3.80 x 8.80	ROHS3 Compliant	956
0297025.U	Littelfuse	25	32	Fast Blow	Blade, Miniature	1	10.90 x 3.80 x 8.80	ROHS3 Compliant	1071
0297025.WXNV	Littelfuse	25	32	Fast Blow	Blade, Miniature	1	10.90 x 3.80 x 8.80	ROHS3 Compliant	49596
0327025.YX2S	Littelfuse	25	32	—	Blade, Micro	—	9.10 x 3.80 x 7.90	ROHS3 Compliant	4993
0997025.WXN	Littelfuse	25	58	Fast Blow	Blade, Miniature	1	10.90 x 3.80 x.80	ROHS3 Compliant	4345
0MIN025.HXGLO	Littelfuse	25	32	Fast Blow	Blade, Miniature	—	10.90 x 3.80 x 8.80	ROHS3 Compliant	861
0MIN025.MXGLO	Littelfuse	25	32	Fast Blow	Blade, Miniature	—	10.90 x 3.80 x 8.80	ROHS3 Compliant	1951
0MIN025.V	Littelfuse	25	32	Fast Blow	Blade, Miniature	—	10.90 x 3.80 x 8.80	ROHS3 Compliant	1144
0MIN025.VP	Littelfuse	25	32	Fast Blow	Blade, Miniature	—	10.90 x 3.80 x 8.80	ROHS3 Compliant	724
0MIN025.VPGLO	Littelfuse	25	32	Fast Blow	Blade, Miniature	—	10.90 x 3.80 x 8.80	ROHS3 Compliant	986

Engineering Selection Recommendations

For Direct Replacement: Select Littelfuse MINI® 297 series parts 0297025.L, 0297025.U, or 0297025.WXNV. These parts provide identical electrical specifications and are physically compatible with ATM-25LP mounting requirements. Part 0297025.WXNV offers the highest inventory availability (49,596 units) for supply chain continuity. Parts 0297025.L and 0297025.U carry additional certification approvals (UL, UR for 0297025.L; SAE, UL for 0297025.U) suitable for applications requiring specific regulatory compliance.

For Space-Constrained Applications: The Littelfuse MICRO2™ 327 series part 0327025.YX2S is applicable when circuit board or fuse holder geometry requires a smaller form factor. Verify mechanical compatibility with the fuse holder before selection, as the micro blade package differs from the miniature package.

For Dual AC/DC Rated Circuits: Littelfuse MINI® series parts 0MIN025.HXGLO, 0MIN025.MXGLO, 0MIN025.V, 0MIN025.VP, and 0MIN025.VPGLO are suitable for circuits operating in both AC and DC modes. These parts maintain 32 V DC compatibility with the ATM-25LP while adding 32 V AC capability. Selection among these variants depends on packaging preference (bulk versus card packaging for 0MIN025.VP) and certification requirements (SAE, UL approvals available for 0MIN025.HXGLO, 0MIN025.MXGLO, 0MIN025.V, and 0MIN025.VPGLO).

For Higher Voltage Circuits: The Littelfuse MINI® 997 series part 0997025.WXN is not interchangeable with the ATM-25LP in 32 V DC applications. This part is specified only for circuits designed for 58 V DC operation.

Frequently Asked Questions (FAQ)

Q: Can I use 0297025.WXNV as a direct replacement for ATM-25LP?

A: Yes. The 0297025.WXNV matches all critical electrical parameters: 25 A current rating, 32 V DC voltage rating, fast-blow response, 1 kA breaking capacity, and blade miniature package form factor. Physical dimensions are equivalent (10.90mm x 3.80mm x 8.80mm versus 10.92mm x 3.81mm x 8.81mm). Both are RoHS compliant.

Q: What is the difference between the MINI® 297 series and MICRO2™ 327 series fuses?

A: Both series provide 25 A, 32 V DC, fast-blow operation with 1 kA breaking capacity. The primary difference is physical size. The MINI® 297 package measures 10.90mm x 3.80mm x 8.80mm, while the MICRO2™ 327 package measures 9.10mm x 3.80mm x 7.90mm. The micro package is smaller in length and height, requiring verification of mechanical compatibility with the fuse holder before substitution.

Q: Can I use 0MIN025.V in place of ATM-25LP?

A: Yes, for DC-only applications. The 0MIN025.V is rated for both 32 V AC and 32 V DC operation, making it functionally equivalent to the ATM-25LP in 32 V DC circuits. Physical dimensions and current ratings are identical. The additional AC rating does not affect DC performance.

Q: Why would I choose 0297025.L or 0297025.U over 0297025.WXNV?

A: Selection depends on certification requirements. Part 0297025.L carries UL and UR approvals, while 0297025.U carries SAE and UL approvals. The 0297025.WXNV does not list specific approval agencies. Choose based on your application's regulatory or customer-specified certification requirements. All three parts are electrically and mechanically equivalent.

Q: Is 0997025.WXN compatible with ATM-25LP?

A: No. While the 0997025.WXN shares the same current rating (25 A), package form factor (blade miniature), and response time (fast-blow), it is rated for 58 V DC, not 32 V DC. This part is specified only for higher-voltage circuits and is not interchangeable in 32 V DC applications.

Q: What does the packaging designation mean for 0MIN025.VP?

A: The 0MIN025.VP is supplied in a 5-pack card format, whereas most other parts are supplied in bulk packaging. The electrical and physical specifications are identical to other MINI® series 25 A, 32 V DC variants. Select this part if your procurement process requires card packaging or if you need smaller quantity units.

Q: Are all substitute parts RoHS compliant?

A: Yes. The ATM-25LP is RoHS Compliant, and all listed substitute parts are ROHS3 Compliant, meeting current RoHS Directive requirements.

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