SCHURTER 0034.5229 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5229 is a 1.6 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, making equivalent and substitute parts necessary for ongoing system maintenance and new designs. The fuse requires a compatible holder for installation and is approved by CSA and UL standards. Identifying suitable alternatives ensures design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Current Rating	1.6 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
Approval Agency	CSA, UL
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SCHURTER 0034.5229 is determined by strict alignment of the following parameters:

Current Rating: 1.6 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)
Physical Dimensions: 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 8020.5013 is a ceramic alternative with higher voltage rating (500 V) and different electrical characteristics; it is included as a reference but operates under different electrical parameters. Direct equivalents from Littelfuse Inc. (031301.6HXP, 031301.6MXP, 031301.6VXP) are glass cartridge fuses with identical electrical and mechanical specifications.

Parameter Comparison

Parameter	0034.5229 (SCHURTER)	031301.6HXP (Littelfuse)	031301.6MXP (Littelfuse)	031301.6VXP (Littelfuse)	8020.5013 (SCHURTER)
Current Rating (Amps)	1.6 A	1.6 A	1.6 A	1.6 A	1.6 A
Voltage Rating - AC	250 V	250 V	250 V	250 V	500 V
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Ceramic
Response Time	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"	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 1.252" L (6.35mm x 31.80mm)
Breaking Capacity @ Rated Voltage	100 A	100 A	100 A	100 A	1.5 kA
Melting I²t	32.5	49.6	49.6	49.6	5.4
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 85°C
Approval Agency	CSA, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	cURus
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement of the obsolete SCHURTER 0034.5229, the Littelfuse 031301.6HXP, 031301.6MXP, and 031301.6VXP are functionally equivalent glass cartridge fuses. All three Littelfuse parts carry active product status and meet or exceed the original approval certifications (CE, CSA, PSE, UL). These parts maintain identical electrical ratings, mechanical dimensions, and package specifications.

The SCHURTER 8020.5013 ceramic alternative operates at 500 V AC, which exceeds the 250 V requirement of the original design. This part is suitable only for applications where higher voltage rating is acceptable and the non-standard package format is compatible with the fuse holder. The ceramic construction and different melting I²t value (5.4 versus 32.5) result in different thermal response characteristics.

Selection should prioritize active-status Littelfuse equivalents (031301.6HXP, 031301.6MXP, 031301.6VXP) for direct substitution in 250 V AC/DC circuits requiring 1.6 A slow-blow protection with 3AB/3AG package compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 8020.5013 be used as a direct replacement for the 0034.5229?

A: No. While both are 1.6 A slow-blow fuses from SCHURTER, the 8020.5013 is a ceramic cartridge rated for 500 V AC, operates at a different temperature range (-40°C ~ 85°C versus -55°C ~ 125°C), and uses a non-standard package format. It is suitable only for applications where 500 V rating is required and holder compatibility is confirmed.

Q: What is the difference between the Littelfuse 031301.6HXP, 031301.6MXP, and 031301.6VXP?

A: All three Littelfuse parts are electrically and mechanically identical: 1.6 A, 250 V AC/DC, slow-blow glass cartridge fuses in 3AB/3AG package. They share the same current rating, voltage rating, dimensions, breaking capacity, operating temperature range, and approval certifications. Selection among these three can be based on availability and inventory status.

Q: Are the Littelfuse equivalents compatible with the original fuse holder?

A: Yes. The Littelfuse 031301.6HXP, 031301.6MXP, and 031301.6VXP maintain the identical 3AB/3AG package format and 0.250" Dia x 1.250" L dimensions, ensuring mechanical and electrical compatibility with holders designed for the SCHURTER 0034.5229.

Q: What does "slow blow" mean in the context of these fuses?

A: Slow-blow fuses tolerate temporary current surges without opening, responding only to sustained overcurrent conditions. This characteristic is determined by the melting I²t value. All substitute parts listed maintain slow-blow response time.

Q: Why does the Littelfuse part have a higher melting I²t (49.6) compared to the original (32.5)?

A: The melting I²t value reflects the thermal energy required to melt the fuse element. A higher value indicates a slightly different thermal response curve. Both values are within acceptable parameters for 1.6 A slow-blow operation, but circuit designers should confirm thermal behavior matches application requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The SCHURTER 0034.5229 and all listed substitute parts (031301.6HXP, 031301.6MXP, 031301.6VXP, 8020.5013) are ROHS3 compliant.

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