SCHURTER 0034.5719.11 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5719.11 is a 4 A 250 V AC/DC glass cartridge fuse with 5mm x 20mm dimensions and slow-blow response characteristics. This component is classified as Active product status and requires a fuse holder for installation. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response time classification, and regulatory compliance certifications to ensure functional interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Current Rating	4 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Slow Blow
Mounting Type	Requires Holder
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Current Rating: 4 A (exact match required)
Voltage Rating: 250 V AC (exact match required)
Package Dimensions: 5mm x 20mm (exact match required)
Response Time: Slow Blow (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Mounting Configuration: Requires Holder (exact match required)
Operating Temperature: -55°C ~ 125°C (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

All substitute parts listed below meet these criteria. Variations in breaking capacity, melting I²t, DC cold resistance, and approval agency certifications do not disqualify substitution when core electrical and mechanical parameters are identical.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage Rating (V AC)	Package	Response Time	Breaking Capacity @ Rated Voltage	Melting I²t	Approval Agency	Inventory (Pcs)
0034.5719.11	SCHURTER Inc.	4	250	5mm x 20mm	Slow Blow	35 A	410	cURus	825
0034.3123	SCHURTER Inc.	4	250	5mm x 20mm	Slow Blow	40 A	68.3	CCC, cURus, PSE/JET, VDE	58155
0034.5623.11	SCHURTER Inc.	4	250	5mm x 20mm	Slow Blow	40 A	68.3	cURus, VDE	1838
0213004.MXP	Littelfuse Inc.	4	250	5mm x 20mm	Slow Blow	40 A	226.505	BSI, CCC, CE, CSA, PSE, SEMKO, UR, VDE	5552
0213004.TXP	Littelfuse Inc.	4	250	5mm x 20mm	Slow Blow	40 A	226.505	BSI, CCC, CE, CSA, PSE, SEMKO, UR, VDE	793
0218004.HXP	Littelfuse Inc.	4	250	5mm x 20mm	Slow Blow	40 A	69.1	CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE	5280
0218004.MXP	Littelfuse Inc.	4	250	5mm x 20mm	Slow Blow	40 A	69.1	CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE	22400
0218004.TXP	Littelfuse Inc.	4	250	5mm x 20mm	Slow Blow	40 A	69.1	CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE	994
0219004.MXABP	Littelfuse Inc.	4	250	5mm x 20mm	Slow Blow	150 A	330	CCC, CE, CSA, PSE, SEMKO, UL, VDE	1154
0618004.MXP	Littelfuse Inc.	4	250	5mm x 20mm	Slow Blow	40 A	69.1	CCC, CE, CSA, UR, VDE	24300
TSC-4A	OptiFuse	4	250	5mm x 20mm	Slow Blow	200 A	30.8	cULus, UL 248	8878

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and meet ROHS3 compliance requirements. Selection among equivalents should be based on:

Regulatory Certification Alignment: The main part 0034.5719.11 carries cURus certification. Substitutes with broader certification coverage (such as Littelfuse 0218004.MXP with CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE) provide expanded compliance for international applications. SCHURTER 0034.3123 includes PSE/JET and VDE certifications alongside cURus.

Inventory Availability: SCHURTER 0034.3123 offers the highest stock level (58155 pcs), followed by Littelfuse 0618004.MXP (24300 pcs) and 0218004.MXP (22400 pcs). Lower inventory alternatives include SCHURTER 0034.5623.11 (1838 pcs) and Littelfuse 0213004.TXP (793 pcs).

Manufacturer Consistency: Direct SCHURTER substitutes (0034.3123 and 0034.5623.11) maintain series continuity within the same manufacturer ecosystem. Cross-manufacturer alternatives from Littelfuse and OptiFuse provide equivalent electrical performance with different approval agency certifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SCHURTER 0034.5719.11 with any of the listed parts?

A: Yes. All listed parts are parametric equivalents meeting the core requirements: 4 A current rating, 250 V AC voltage rating, 5mm x 20mm package dimensions, slow-blow response time, and glass cartridge construction. Differences in breaking capacity, melting I²t, and approval certifications do not affect functional substitution when electrical and mechanical specifications match.

Q: What is the difference between the SCHURTER parts (0034.5719.11, 0034.3123, 0034.5623.11)?

A: All three SCHURTER parts share identical electrical and mechanical parameters. The primary differences are series designation (SMD-FTT vs. FST 5x20 vs. SMD-FST), breaking capacity (35 A vs. 40 A vs. 40 A), melting I²t values (410 vs. 68.3 vs. 68.3), and approval agency certifications. Part 0034.3123 offers the highest inventory availability.

Q: Why do Littelfuse parts show different melting I²t values?

A: Melting I²t represents the thermal energy required to melt the fuse element and is a secondary characteristic that does not affect substitution eligibility when primary electrical ratings and package dimensions are identical. The 213 series shows 226.505, while 218 and 618 series show 69.1. These variations reflect internal design differences but maintain equivalent circuit protection performance at the specified 4 A rating.

Q: Are there any compatibility concerns with cross-manufacturer substitution?

A: No compatibility concerns exist for cross-manufacturer substitution when all electrical and mechanical parameters match. The fuse holder interface is standardized for 5mm x 20mm cartridges. Verify that your application's regulatory requirements align with the substitute part's approval agency certifications (cURus, UL, VDE, CE, etc.).

Q: Which substitute offers the best availability?

A: Littelfuse 0618004.MXP provides the highest inventory (24300 pcs), followed by 0218004.MXP (22400 pcs). SCHURTER 0034.3123 offers 58155 pcs, making it the single highest-availability option across all manufacturers.

Q: Does the breaking capacity difference matter for substitution?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. The main part 0034.5719.11 has 35 A breaking capacity, while most substitutes offer 40 A or higher. Higher breaking capacity provides equal or superior performance and does not create compatibility issues. Selection should align with your circuit's maximum fault current requirements.

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