SCHURTER 0034.5231 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5231 is a 2 A, 250 V AC/DC slow-blow glass cartridge fuse in 3AB/3AG package format (1/4" x 1-1/4"). This component is classified as obsolete. Equivalent and substitute parts are available from active product lines, primarily from Littelfuse Inc., which maintain identical or superior electrical and mechanical specifications while offering continued availability and support.

Key Parameters

Parameter	Value
Current Rating	2 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	100 A
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 0034.5231 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Glass Cartridge Fuses, 2 A, 250 V AC): Littelfuse 313 series parts (0313002.HXP, 0313002.MXP, 0313002.VXP, 0313002.HXIDP, 0313002.VXIDP) are parametric equivalents that match all critical specifications: current rating, voltage rating, fuse type (glass cartridge), response time (slow blow), package format (3AB/3AG), physical dimensions, breaking capacity, and operating temperature range. These parts are active products with full regulatory approvals.

Similar Substitute (Ceramic Cartridge Fuse, 2 A, 500 V AC): SCHURTER 8020.5014 is a ceramic cartridge fuse with identical current rating (2 A) and response time (slow blow), but with elevated voltage rating (500 V AC) and different package classification (non-standard). This part is suitable only when higher voltage tolerance is required and mechanical holder compatibility is verified.

Substitution logic is based strictly on: current rating, voltage rating, fuse type, response time, package format, physical dimensions, breaking capacity, and operating temperature range.

Parameter Comparison

Parameter	SCHURTER 0034.5231	Littelfuse 0313002.HXP	Littelfuse 0313002.MXP	Littelfuse 0313002.VXP	Littelfuse 0313002.HXIDP	Littelfuse 0313002.VXIDP	SCHURTER 8020.5014
Manufacturer	SCHURTER Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse	Littelfuse Inc.	Littelfuse Inc.	SCHURTER Inc.
Current Rating (Amps)	2 A	2 A	2 A	2 A	2 A	2 A	2 A
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	100 A	100 A	100 A	100 A	100 A	100 A	1.5 kA
Melting I²t	47.1	77	77	77	77	77	10.5
Operating Temperature	-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, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	cURus
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Littelfuse 313 Series): The Littelfuse 0313002.HXP, 0313002.MXP, 0313002.VXP, 0313002.HXIDP, and 0313002.VXIDP are direct parametric equivalents suitable for drop-in replacement of the obsolete SCHURTER 0034.5231. All five parts maintain identical electrical ratings (2 A, 250 V AC), fuse type (glass cartridge), response time (slow blow), package format (3AB/3AG), physical dimensions, and operating temperature range. These parts carry active product status with expanded regulatory approvals (CE, CSA, PSE, UL) compared to the original part (CSA, UL). All are ROHS3 compliant.

Alternative Substitute (SCHURTER 8020.5014): The SCHURTER 8020.5014 ceramic cartridge fuse is suitable only when circuit design permits operation at 500 V AC and mechanical holder compatibility with non-standard package format is confirmed. This part offers higher breaking capacity (1.5 kA vs. 100 A) but operates within a narrower temperature range (-40°C ~ 85°C vs. -55°C ~ 125°C) and exhibits different thermal characteristics (Melting I²t of 10.5 vs. 47.1).

Frequently Asked Questions (FAQ)

Q: Can Littelfuse 313 series fuses directly replace the SCHURTER 0034.5231? A: Yes. The Littelfuse 0313002.HXP, 0313002.MXP, 0313002.VXP, 0313002.HXIDP, and 0313002.VXIDP are parametric equivalents with identical current rating (2 A), voltage rating (250 V AC), fuse type (glass cartridge), response time (slow blow), package format (3AB/3AG), and physical dimensions (0.250" Dia x 1.250" L). All are active products with full regulatory compliance.

Q: What is the difference between the five Littelfuse 313 series substitutes? A: All five parts (0313002.HXP, 0313002.MXP, 0313002.VXP, 0313002.HXIDP, 0313002.VXIDP) share identical electrical and mechanical specifications. Differences are limited to internal construction variants and packaging designations. Selection may be based on inventory availability or specific application requirements.

Q: Is the SCHURTER 8020.5014 a suitable replacement? A: The SCHURTER 8020.5014 is a similar substitute only when circuit voltage tolerance permits 500 V AC operation and mechanical holder compatibility with non-standard package format is verified. The ceramic construction and different thermal characteristics (Melting I²t of 10.5) differ from the original glass cartridge design (Melting I²t of 47.1).

Q: What regulatory approvals do the substitute parts carry? A: Littelfuse 313 series parts carry CE, CSA, PSE, and UL approvals, exceeding the original part's CSA and UL certifications. The SCHURTER 8020.5014 carries cURus approval.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All Littelfuse 313 series substitutes and the SCHURTER 8020.5014 are ROHS3 compliant, matching the original SCHURTER 0034.5231 compliance status.

Q: What is the operating temperature range for substitute parts? A: Littelfuse 313 series parts operate across -55°C ~ 125°C, identical to the original part. The SCHURTER 8020.5014 operates within -40°C ~ 85°C, a narrower range.

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