Littelfuse 0257003.PXPV Equivalent & Substitute Parts

Part Overview

The Littelfuse 0257003.PXPV is a 3A automotive blade fuse rated for 32V DC operation with fast-blow response characteristics. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs. The fuse is designed for ATO/ATC holder applications in automotive electrical circuits requiring overcurrent protection.

Key Parameters

Parameter	Value
Current Rating	3 A
Voltage Rating (DC)	32 V
Response Time	Fast Blow
Package / Case	Blade, ATO/ATC
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	1 kA
DC Cold Resistance	0.0311 Ohms
Color	Violet
Size / Dimension	0.750" L x 0.200" W x 0.480" H (19.05mm x 5.08mm x 12.19mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 0257003.PXPV is determined by the following critical parameters:

Current Rating: 3 A (exact match required)
Voltage Rating: 32 V DC minimum (32 V AC/DC acceptable)
Response Time: Fast Blow
Package / Case: Blade, ATO/ATC (physical and electrical compatibility)
Mounting Type: Requires Holder (same holder compatibility)
Color: Violet (indicates 3A rating per automotive fuse standards)

Substitute parts are grouped into two categories:

Direct Substitutes (Same Manufacturer - Littelfuse): Parts with identical electrical and mechanical specifications, differing only in product status (active vs. obsolete) or packaging format.

Cross-Manufacturer Equivalent: Parts from alternative manufacturers (Eaton - Bussmann) meeting identical electrical and mechanical parameters within standard tolerance ranges.

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage Rating (DC)	Voltage Rating (AC)	Response Time	Package / Case	Breaking Capacity (kA)	DC Cold Resistance (Ohms)	Product Status	Approval Agency
0257003.PXPV	Littelfuse Inc.	3	32	—	Fast Blow	Blade, ATO/ATC	1	0.0311	Obsolete	—
0287003.PXCN	Littelfuse Inc.	3	32	—	Fast Blow	Blade, ATO/ATC	1	0.0311	Active	UL
0ATO003.HXGLO	Littelfuse Inc.	3	32	32	Fast Blow	Blade, ATO/ATC	—	—	Active	CSA, SAE, UL
0ATO003.MXGLO	Littelfuse Inc.	3	32	32	Fast Blow	Blade, ATO/ATC	—	—	Active	CSA, SAE, UL
0ATO003.V	Littelfuse Inc.	3	32	32	Fast Blow	Blade, ATO/ATC	—	—	Active	CSA, UL
0ATO003.VP	Littelfuse Inc.	3	32	32	Fast Blow	Blade, ATO/ATC	—	—	Active	CSA, SAE, UL
0ATO003.VPGLO	Littelfuse Inc.	3	32	32	Fast Blow	Blade, ATO/ATC	—	—	Active	CSA, UL
BK/ATC-3	Eaton - Bussmann Electrical Division	3	32	—	Fast Blow	Blade, ATO/ATC	1	—	Active	UL

Engineering Selection Recommendations

Primary Recommendation: 0287003.PXCN (Littelfuse Inc.)

This part is the direct successor to the obsolete 0257003.PXPV, maintaining identical electrical specifications (3A, 32V DC, fast-blow response) and mechanical form factor. It carries active product status and UL approval, ensuring continued availability and compliance with current automotive standards.

Secondary Recommendations: 0ATO003.HXGLO, 0ATO003.MXGLO, 0ATO003.V, 0ATO003.VP, 0ATO003.VPGLO (Littelfuse Inc.)

These parts meet all electrical and mechanical requirements with active product status. They provide dual voltage rating capability (32V AC/DC), expanding application flexibility. Selection among these variants depends on packaging requirements: individual bulk units (0ATO003.HXGLO, 0ATO003.MXGLO, 0ATO003.V, 0ATO003.VPGLO) or 5-pack card format (0ATO003.VP). All carry CSA and UL approvals; 0ATO003.HXGLO, 0ATO003.MXGLO, and 0ATO003.VP include SAE certification.

Cross-Manufacturer Alternative: BK/ATC-3 (Eaton - Bussmann Electrical Division)

This part provides equivalent electrical performance (3A, 32V DC, fast-blow, 1kA breaking capacity) with ATC series compatibility. It carries UL approval and active product status. Dimensional tolerance variation (0.760" L x 0.207" W x 0.492" H vs. 0.750" L x 0.200" W x 0.480" H) remains within standard automotive fuse holder acceptance ranges.

Frequently Asked Questions (FAQ)

Q: Can I use 0ATO003.V as a direct replacement for 0257003.PXPV?

A: Yes. Both parts share identical current rating (3A), DC voltage rating (32V), response time (fast-blow), and ATO/ATC blade package compatibility. The 0ATO003.V is active and carries CSA and UL approvals, making it suitable for direct substitution.

Q: What is the difference between 0287003.PXCN and the 0ATO003 series?

A: 0287003.PXCN maintains the exact electrical and mechanical specifications of the obsolete 0257003.PXPV with identical DC cold resistance (0.0311 Ohms) and breaking capacity (1kA). The 0ATO003 series parts provide dual AC/DC voltage rating (32V AC/32V DC) and are available in different packaging formats. Both are suitable substitutes; selection depends on application requirements and packaging preference.

Q: Are the dimensional differences between 0257003.PXPV and BK/ATC-3 significant?

A: The dimensional variation (approximately 0.010" in length, 0.007" in width, and 0.012" in height) falls within standard automotive fuse holder tolerance specifications. Both parts are mechanically compatible with ATO/ATC holders. The BK/ATC-3 is a valid cross-manufacturer substitute.

Q: What does the packaging designation mean (e.g., "5PK CARD" for 0ATO003.VP)?

A: Packaging designation indicates the quantity and format of the product as supplied. "5PK CARD" means five fuses packaged on a card. "Bulk" indicates individual units. The electrical and mechanical specifications remain identical regardless of packaging format.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance status, meeting environmental and material restriction requirements for automotive applications.

Q: Which substitute part has the broadest approval certifications?

A: 0ATO003.HXGLO, 0ATO003.MXGLO, and 0ATO003.VP carry the most comprehensive approvals (CSA, SAE, and UL), providing maximum compatibility across diverse automotive system requirements.

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