Littelfuse 022404.6VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 022404.6VXP is a 4.6 A fast-blow glass cartridge fuse rated for 250 V AC and 125 V DC operation. This through-hole mounted fuse is designed for circuit protection in applications requiring reliable overcurrent interruption. The part maintains active product status with full regulatory compliance across CE, CSA, PSE, and UL certifications. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product series, ensuring direct functional equivalence without design modification.

Key Parameters

Parameter	Specification
Current Rating	4.6 A
Voltage Rating - AC	250 V
Voltage Rating - DC	125 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	2AG, 5mm x 15mm (Axial)
Mounting Type	Through Hole
Breaking Capacity @ Rated Voltage	100 A AC, 10 kA DC
Melting I²t	6.7
Operating Temperature Range	-55°C ~ 125°C
DC Cold Resistance	0.0265 Ohms
Approval Agencies	CE, CSA, PSE, UL
RoHS Status	ROHS3 Compliant
Series	224

Substitute Part Grouping Explanation

Substitute parts for the 022404.6VXP are identified based on strict parametric equivalence within the Littelfuse 224 series. The substitution criteria are:

Current Rating: 4.6 A (exact match required)
Voltage Rating - AC: 250 V (exact match required)
Voltage Rating - DC: 125 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Fast Blow (exact match required)
Package / Case: 2AG, 5mm x 15mm (Axial) (exact match required)
Mounting Type: Through Hole (exact match required)
Breaking Capacity @ Rated Voltage: 100 A AC, 10 kA DC (exact match required)
Melting I²t: 6.7 (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
DC Cold Resistance: 0.0265 Ohms (exact match required)
Approval Agencies: CE, CSA, PSE, UL (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

The substitute parts 022404.6HXP and 022404.6MXP meet all these criteria and are therefore direct parametric equivalents suitable for interchangeable use.

Parameter Comparison

Parameter	022404.6VXP	022404.6HXP	022404.6MXP
Current Rating (Amps)	4.6 A	4.6 A	4.6 A
Voltage Rating - AC	250 V	250 V	250 V
Voltage Rating - DC	125 V	125 V	125 V
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass
Response Time	Fast Blow	Fast Blow	Fast Blow
Package / Case	2AG, 5mm x 15mm (Axial)	2AG, 5mm x 15mm (Axial)	2AG, 5mm x 15mm (Axial)
Mounting Type	Through Hole	Through Hole	Through Hole
Breaking Capacity @ Rated Voltage	100 A AC, 10 kA DC	100 A AC, 10 kA DC	100 A AC, 10 kA DC
Melting I²t	6.7	6.7	6.7
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
DC Cold Resistance	0.0265 Ohms	0.0265 Ohms	0.0265 Ohms
Approval Agencies	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Series	224	224	224
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—022404.6VXP, 022404.6HXP, and 022404.6MXP—are active products within the Littelfuse 224 series with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and lead time considerations. The 022404.6MXP currently maintains the highest inventory level at 1712 pieces, followed by 022404.6VXP at 870 pieces and 022404.6HXP at 763 pieces. All parts carry equivalent regulatory compliance across CE, CSA, PSE, and UL certifications and maintain ROHS3 compliance status. No technical differentiation exists between these parts for circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can 022404.6HXP and 022404.6MXP be used interchangeably with 022404.6VXP?

A: Yes. All three parts are parametric equivalents with identical current ratings, voltage ratings, response characteristics, package dimensions, and regulatory certifications. Direct substitution is permissible without circuit modification.

Q: What determines if a fuse is a valid substitute for the 022404.6VXP?

A: A valid substitute must maintain identical specifications across current rating (4.6 A), AC voltage rating (250 V), DC voltage rating (125 V), fuse type (cartridge, glass), response time (fast blow), package dimensions (2AG, 5mm x 15mm), mounting type (through hole), breaking capacity (100 A AC, 10 kA DC), melting I²t (6.7), operating temperature range (-55°C ~ 125°C), and regulatory approvals (CE, CSA, PSE, UL).

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: No. All three parts share identical package specifications (2AG, 5mm x 15mm axial cartridge) and through-hole mounting configuration. Physical installation and PCB footprint compatibility are identical.

Q: Do all substitute parts carry the same regulatory certifications?

A: Yes. The 022404.6VXP, 022404.6HXP, and 022404.6MXP all carry CE, CSA, PSE, and UL approvals and maintain ROHS3 compliance status.

Q: What is the difference between these part numbers if all specifications are identical?

A: The part numbers reflect different manufacturing batches or internal Littelfuse product variants within the 224 series. From an engineering standpoint, no functional or performance difference exists between these parts.

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