Littelfuse 0318004.VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0318004.VXP is a 4 A, 250 V AC/DC fast-blow glass cartridge fuse with 3AB/3AG package configuration. This through-hole component is designed for circuit protection in industrial and commercial applications. The part maintains active product status with full regulatory compliance across multiple approval agencies. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable.

Substiute Parts

0318004.VXP

Littelfuse Inc.In Stock: 8420318004.VXP Datasheet

Current PartRFQ

0318004.HXP

Littelfuse Inc.In Stock: 13050318004.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0318004.VXP is determined by strict equivalence across the following critical parameters:

Current Rating: 4 A (exact match required) Voltage Rating: 250 V AC (exact match required) Fuse Type: Cartridge, Glass (exact match required) Response Time: Fast Blow (exact match required) Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required) Mounting Type: Through Hole (exact match required) Breaking Capacity: 200 A (exact match required) Melting I²t: 28.5 (exact match required) Operating Temperature Range: -55°C ~ 125°C (exact match required) Size / Dimension: 0.275" Dia x 1.288" L (6.99mm x 32.72mm) (exact match required) DC Cold Resistance: 0.0293 Ohms (exact match required) Approval Agencies: CE, CSA, KC, PSE, UL (exact match required) RoHS Status: ROHS3 Compliant (exact match required)

The substitute part 0318004.HXP meets all these criteria and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the 0318004.VXP and 0318004.HXP are active products manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Both parts carry full regulatory compliance including CE, CSA, KC, PSE, and UL certifications, and both meet ROHS3 requirements. Selection between these parts may be based on inventory availability, lead time, or procurement source preference, as they are direct parametric equivalents with no functional or compliance differentiation.

Frequently Asked Questions (FAQ)

Q: Can 0318004.HXP be used as a direct replacement for 0318004.VXP? A: Yes. The 0318004.HXP is a direct parametric equivalent with identical current rating (4 A), voltage rating (250 V AC), fuse type (cartridge, glass), response time (fast blow), package configuration (3AB/3AG), breaking capacity (200 A), melting I²t (28.5), operating temperature range (-55°C ~ 125°C), physical dimensions (0.275" Dia x 1.288" L), DC cold resistance (0.0293 Ohms), and regulatory approvals (CE, CSA, KC, PSE, UL).

Q: Are there any differences in mechanical fit between these parts? A: No. Both parts share identical package specifications (3AB, 3AG, 1/4" x 1-1/4" Axial) and physical dimensions (0.275" Dia x 1.288" L / 6.99mm x 32.72mm). Both are through-hole mounted components with identical form factors.

Q: Do both parts meet the same regulatory requirements? A: Yes. Both 0318004.VXP and 0318004.HXP carry identical approval agency certifications (CE, CSA, KC, PSE, UL) and both are ROHS3 compliant.

Q: What is the difference between these part numbers? A: The part numbers differ only in their suffix designation (VXP vs. HXP). All electrical, mechanical, and regulatory parameters are identical. The suffix may indicate different packaging batches, manufacturing dates, or internal Littelfuse inventory tracking, but no functional or performance difference exists.

Q: Can I mix these parts in the same circuit or application? A: Yes. Since both parts are parametric equivalents with identical electrical characteristics, breaking capacity, and thermal properties, they can be used interchangeably in the same circuit or application without modification.