Littelfuse 0229002.MXSP Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0229002.MXSP is a 2A 250VAC 125VDC glass cartridge fuse in the 2AG form factor (5mm x 15mm). This slow-blow fuse is designed for circuit protection in applications requiring both AC and DC voltage ratings. The part is active in production with full compliance certifications (CE, CSA, PSE, UL) and ROHS3 compliance. Equivalent substitute parts are available from the same manufacturer series to support procurement flexibility, inventory management, and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer	Littelfuse Inc.
Series	229
Fuse Type	Cartridge, Glass
Current Rating	2 A
Voltage Rating - AC	250 V
Voltage Rating - DC	125 V
Response Time	Slow Blow
Package / Case	2AG, 5mm x 15mm
Breaking Capacity @ Rated Voltage	35A AC, 10kA DC
Melting I²t	30
Operating Temperature Range	-55°C ~ 125°C
DC Cold Resistance	0.0698 Ohms
Approval Agencies	CE, CSA, PSE, UL
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

All substitute parts listed below are parametric equivalents of the 0229002.MXSP. Substitution is valid based on identical electrical and mechanical specifications across the following critical parameters:

Current Rating: 2 A
Voltage Rating: 250 V AC / 125 V DC
Fuse Type: Cartridge, Glass
Response Time: Slow Blow
Package / Case: 2AG, 5mm x 15mm
Breaking Capacity: 35A AC, 10kA DC
Melting I²t: 30
Operating Temperature Range: -55°C ~ 125°C
DC Cold Resistance: 0.0698 Ohms
Approval Agencies: CE, CSA, PSE, UL
RoHS Status: ROHS3 Compliant

The substitute parts differ only in internal construction or packaging designation (indicated by suffix variations: MXSP, HXP, HXSP, MXP) but maintain identical electrical performance and mechanical compatibility.

Parameter Comparison

Parameter	0229002.MXSP	0229002.HXP	0229002.HXSP	0229002.MXP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Series	229	229	229	229
Current Rating (Amps)	2 A	2 A	2 A	2 A
Voltage Rating - AC	250 V	250 V	250 V	250 V
Voltage Rating - DC	125 V	125 V	125 V	125 V
Response Time	Slow Blow	Slow Blow	Slow Blow	Slow Blow
Package / Case	2AG, 5mm x 15mm	2AG, 5mm x 15mm	2AG, 5mm x 15mm	2AG, 5mm x 15mm
Breaking Capacity @ Rated Voltage	35A AC, 10kA DC	35A AC, 10kA DC	35A AC, 10kA DC	35A AC, 10kA DC
Melting I²t	30	30	30	30
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
DC Cold Resistance	0.0698 Ohms	0.0698 Ohms	0.0698 Ohms	0.0698 Ohms
Approval Agencies	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All four parts (0229002.MXSP, 0229002.HXP, 0229002.HXSP, 0229002.MXP) are active production components from Littelfuse Inc. Series 229 with identical electrical and mechanical specifications. Selection among these equivalents may be based on:

Inventory availability: 0229002.MXP (2329 pcs), 0229002.HXP (1797 pcs), 0229002.HXSP (847 pcs), 0229002.MXSP (783 pcs)
Procurement lead time and supplier stock status
Internal design documentation and bill of materials requirements
Packaging and logistics considerations

All parts carry equivalent regulatory approvals (CE, CSA, PSE, UL) and environmental compliance (ROHS3, REACH Unaffected), ensuring interchangeability in circuit protection applications requiring 2A slow-blow fuse protection at 250VAC / 125VDC ratings.

Frequently Asked Questions (FAQ)

Q: Can 0229002.HXP be used as a direct replacement for 0229002.MXSP?

A: Yes. Both parts are parametric equivalents with identical current rating (2A), voltage ratings (250VAC / 125VDC), response time (slow-blow), package (2AG, 5mm x 15mm), breaking capacity, and all electrical characteristics. Direct substitution is valid.

Q: What determines if a fuse can substitute for the 0229002.MXSP?

A: Substitution is valid when the replacement part maintains identical specifications for current rating, AC/DC voltage ratings, response time classification, package form factor (2AG), breaking capacity, melting I²t value, and operating temperature range. All listed substitutes meet these criteria.

Q: Are there any differences in the suffix designations (MXSP, HXP, HXSP, MXP)?

A: The suffix variations indicate different internal construction or packaging designations within the Littelfuse 229 series. All suffixes listed represent equivalent electrical and mechanical performance for the specified 2A 250VAC 125VDC slow-blow cartridge fuse.

Q: Do all substitute parts have the same approval certifications?

A: Yes. All substitute parts carry identical regulatory approvals: CE, CSA, PSE, and UL. All are ROHS3 compliant and REACH unaffected, ensuring equivalent compliance for regulated applications.

Q: What is the physical compatibility of these fuses?

A: All parts use the 2AG form factor with dimensions 5mm x 15mm (0.177" Dia x 0.570" L). They are mechanically interchangeable in any holder designed for 2AG cartridge fuses.

Q: Can I mix different part numbers in the same circuit or application?

A: Yes. Since all substitute parts are parametric equivalents with identical electrical characteristics, they can be used interchangeably within the same circuit or application without affecting circuit protection performance.

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