SCHURTER 0034.5225 Glass Cartridge Fuse 1A 250VAC Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5225 is a 1 A, 250 V AC/DC glass cartridge fuse with slow-blow response characteristics, designed for 3AB and 3AG holder applications. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing system support and procurement.

Key Parameters

Parameter	Value
Current Rating	1 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4"
Breaking Capacity @ Rated Voltage	35 A
Melting I²t	16.7
Operating Temperature Range	-55°C ~ 125°C
Size / Dimension	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
Approval Agencies	CSA, UL
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 0034.5225 is determined by the following critical parameters:

Current Rating: 1 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)
Breaking Capacity @ Rated Voltage: 35 A (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match or extended range acceptable)

Substitute parts are classified into two categories:

Direct Manufacturer Equivalents: Parts from alternative manufacturers meeting all critical electrical and mechanical parameters with identical package specifications.

Parametric Equivalents: Parts from Littelfuse Inc. (Series 313) meeting all critical electrical and mechanical parameters with identical package specifications and active product status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage Rating (AC)	Fuse Type	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Operating Temperature	Product Status	RoHS Status
0034.5225	SCHURTER Inc.	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	-55°C ~ 125°C	Obsolete	ROHS3 Compliant
0313001.MXP	Littelfuse Inc.	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	-55°C ~ 125°C	Active	ROHS3 Compliant
0313001.HXIDP	Littelfuse Inc.	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	-55°C ~ 125°C	Active	ROHS3 Compliant
0313001.HXP	Littelfuse Inc.	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	-55°C ~ 125°C	Active	ROHS3 Compliant
0313001.VXIDP	Littelfuse Inc.	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	-55°C ~ 125°C	Active	ROHS3 Compliant
0313001.VXP	Littelfuse Inc.	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	-55°C ~ 125°C	Active	ROHS3 Compliant
0313001.HXC932P	Littelfuse Inc.	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	-55°C ~ 125°C	Active	ROHS3 Compliant
BK/MDQ-1	Eaton - Electronics Division	1	250 V	Cartridge, Glass	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	35 A	Not Specified	Active	RoHS non-compliant
MDQ-1	Eaton - Electronics Division	1	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Active	RoHS Compliant

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete SCHURTER 0034.5225, the Littelfuse Inc. Series 313 parts (0313001.MXP, 0313001.HXIDP, 0313001.HXP, 0313001.VXIDP, 0313001.VXP, 0313001.HXC932P) are the primary selection candidates. All Littelfuse equivalents maintain ROHS3 compliance, active product status, and identical electrical and mechanical specifications.

The Eaton BK/MDQ-1 provides functional equivalence with active product status and identical electrical parameters. However, this part does not meet ROHS3 compliance requirements. Selection of BK/MDQ-1 is appropriate only for applications where RoHS compliance is not mandated.

The Eaton MDQ-1 lacks sufficient parameter documentation for direct equivalence determination and should not be selected as a primary replacement.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0313001.MXP directly replace the SCHURTER 0034.5225?

A: Yes. The 0313001.MXP meets all critical electrical parameters (1 A, 250 V AC, slow-blow response), mechanical specifications (3AB/3AG package, 0.250" Dia x 1.250" L), and performance ratings (35 A breaking capacity). Both parts are ROHS3 compliant. The Littelfuse part is active, whereas the SCHURTER part is obsolete.

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

A: All Littelfuse Series 313 substitutes (0313001.MXP, 0313001.HXIDP, 0313001.HXP, 0313001.VXIDP, 0313001.VXP, 0313001.HXC932P) share identical electrical ratings, package specifications, and operating temperature ranges. Differences exist in DC cold resistance values and internal construction variants. Selection among these parts depends on specific application requirements for DC resistance characteristics.

Q: Is the Eaton BK/MDQ-1 a suitable replacement?

A: The Eaton BK/MDQ-1 is electrically and mechanically equivalent to the SCHURTER 0034.5225, with identical current rating, voltage rating, fuse type, response time, package, and breaking capacity. However, the BK/MDQ-1 is not ROHS3 compliant. This part is suitable only for applications where RoHS compliance is not required.

Q: What holder types are compatible with these fuses?

A: All substitute parts listed are designed for 3AB and 3AG holder applications. The physical dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm) ensure mechanical compatibility with standard 3AB and 3AG cartridge fuse holders.

Q: Are there any temperature range limitations when substituting?

A: All Littelfuse Series 313 substitutes maintain the same operating temperature range as the original SCHURTER part (-55°C ~ 125°C). The Eaton BK/MDQ-1 does not specify an operating temperature range in the provided data. For applications requiring confirmed temperature performance, Littelfuse equivalents are the recommended selection.

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