SCHURTER 0034.5239 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5239 is a 5 A 250 V AC/DC slow-blow glass fuse cartridge in 3AB/3AG package format (1/4" x 1-1/4"). This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs. The part requires a compatible fuse holder for installation and is approved by CSA and UL standards.

Key Parameters

Parameter	Value
Manufacturer Part Number	0034.5239
Manufacturer	SCHURTER Inc.
Current Rating	5 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4"
Size / Dimension	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
Breaking Capacity @ Rated Voltage	200 A
Operating Temperature Range	-55°C ~ 125°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SCHURTER 0034.5239 is determined by strict equivalence across the following parameters:

Current Rating: 5 A (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Slow Blow (exact match required)
Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
Size / Dimension: 0.250" Dia x 1.250" L (exact match required)
Mounting Type: Requires Holder (exact match required)

All substitute parts listed below meet these criteria. The SCHURTER 8020.5018 is classified as a similar part but operates at 500 V AC and uses ceramic construction, making it suitable only for applications where higher voltage rating is acceptable and ceramic fuse characteristics are compatible with the circuit design.

Parameter Comparison

Parameter	SCHURTER 0034.5239	Littelfuse 0313005.MXP	Littelfuse 0313005.HXP	Littelfuse 0313005.HXIDP	Littelfuse 0313005.VXIDP	Littelfuse 0313005.VXP	SCHURTER 8020.5018
Current Rating (A)	5	5	5	5	5	5	5
Voltage Rating (AC)	250 V	250 V	250 V	250 V	250 V	250 V	500 V
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Ceramic
Response Time	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"	Cartridge, Non-Standard
Size / Dimension	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.252" L (6.35mm x 31.80mm)
Breaking Capacity @ Rated Voltage	200 A	200 A	200 A	200 A	200 A	200 A	1.5 kA
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 85°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Approval Agency	CSA, UL	CE, CSA, K-MARK, PSE, UL	CE, CSA, K-MARK, PSE, UL	CE, CSA, KC, PSE, UL	CE, CSA, KC, PSE, UL	CE, CSA, KC, PSE, UL	cURus
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement of the obsolete SCHURTER 0034.5239, select from the Littelfuse 313 series parts: 0313005.MXP, 0313005.HXP, 0313005.HXIDP, 0313005.VXIDP, or 0313005.VXP. All five parts are active products with identical electrical and mechanical specifications to the original component. These parts carry expanded regulatory approvals including CE, CSA, K-MARK, PSE, and UL certifications, providing broader compliance coverage than the original part.

The SCHURTER 8020.5018 ceramic fuse is not a direct replacement due to its 500 V AC rating and ceramic construction. This part is suitable only for applications where the circuit design accommodates higher voltage rating and ceramic fuse characteristics are compatible with the protection scheme.

Frequently Asked Questions (FAQ)

Q: Can Littelfuse 0313005.MXP be used as a direct replacement for SCHURTER 0034.5239?

A: Yes. Both parts are 5 A 250 V AC/DC slow-blow glass fuses in 3AB/3AG package format with identical dimensions (0.250" Dia x 1.250" L) and 200 A breaking capacity. The Littelfuse part is an active product with expanded regulatory approvals.

Q: What is the difference between the five Littelfuse 313 series substitutes?

A: All five parts (0313005.MXP, 0313005.HXP, 0313005.HXIDP, 0313005.VXIDP, 0313005.VXP) meet the same electrical and mechanical specifications. Differences exist in melting I²t values (276 for 0313005.MXP; 140 for the others) and specific regulatory approvals. Selection depends on circuit-specific requirements and regional compliance needs.

Q: Can SCHURTER 8020.5018 replace the original part?

A: No. The 8020.5018 operates at 500 V AC and uses ceramic construction, differing from the original 250 V AC glass fuse. This part is suitable only for applications where higher voltage rating and ceramic fuse characteristics are acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the original SCHURTER 0034.5239.

Q: What holder compatibility should be verified?

A: All substitute parts require the same 3AB/3AG fuse holder as the original part. Verify that existing holders are rated for the substitute part's electrical characteristics before installation.

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