SCHURTER 0034.1741 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.1741 is a 315 mA, 250 V AC/DC fast-blow glass fuse cartridge in the 3AB/3AG package format (1/4" x 1-1/4"). This component is classified as obsolete, requiring identification of active equivalent or substitute parts for ongoing system support and procurement. Glass fuse cartridges in this specification are commonly used in industrial control circuits, power distribution, and equipment protection applications where fast-response overcurrent protection is required.

Substiute Parts

0034.1741

SCHURTER Inc.In Stock: 12000034.1741 Datasheet

Current PartRFQ

7022.0550

SCHURTER Inc.In Stock: 9467022.0550 Datasheet

SimilarRFQ

0312.375MXP

Littelfuse Inc.In Stock: 22530312.375MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SCHURTER 0034.1741 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Current Rating: 315 mA (exact match required for circuit protection integrity)
• Voltage Rating: 250 V AC minimum (equal or higher voltage rating acceptable)
• Package Format: 3AB/3AG, 1/4" x 1-1/4" (mechanical and electrical holder compatibility)
• Response Time: Fast Blow (functional characteristic for protection response)
• Fuse Type: Cartridge format (holder compatibility requirement)

Secondary Considerations:

• Breaking Capacity at rated voltage (minimum 35 A for this application)
• Operating temperature range compatibility
• Regulatory compliance and approval agencies

Two substitute parts meet the primary compatibility criteria with variations in fuse construction material and voltage rating:

1. SCHURTER 7022.0550 – Ceramic construction, 500 V AC rating, same current and package
2. Littelfuse 0312.375MXP – Glass construction, 250 V AC rating, higher current rating (375 mA), same package

Parameter Comparison

Engineering Selection Recommendations

SCHURTER 7022.0550 (Ceramic, 500 V AC): This substitute maintains exact current rating (315 mA) and package compatibility. The ceramic construction and elevated voltage rating (500 V) provide enhanced performance margin in circuits operating at 250 V AC. Product status is active with UR approval. Breaking capacity increases to 150 kA, providing superior fault protection capability. Selection is appropriate for applications requiring higher voltage margin and improved fault tolerance.

Littelfuse 0312.375MXP (Glass, 250 V AC): This substitute matches the original fuse type (glass cartridge) and voltage rating (250 V AC). Current rating is elevated to 375 mA, representing a 19% increase over the original specification. Product status is active with CE, CSA, and UL approvals, providing broader regulatory coverage. Operating temperature range extends to -55°C ~ 125°C. Selection is appropriate for applications where glass fuse construction is required and the higher current rating is acceptable within circuit design parameters.

Both substitutes are active products with full regulatory compliance and mechanical compatibility with 3AB/3AG holders.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 7022.0550 (500 V ceramic) be used in place of the 0034.1741 (250 V glass)?

A: Yes. The 7022.0550 maintains the exact 315 mA current rating and 3AB/3AG package compatibility. The higher voltage rating (500 V) is acceptable in 250 V AC circuits. Ceramic construction provides different thermal and electrical characteristics compared to glass, but both are fast-blow cartridge fuses suitable for the same holder format.

Q: Is the Littelfuse 0312.375MXP (375 mA) a direct replacement for the 315 mA original?

A: The 0312.375MXP is mechanically and electrically compatible with the same 3AB/3AG package and 250 V AC voltage rating. The 375 mA current rating is 19% higher than the original 315 mA specification. This substitute is appropriate only if circuit design permits the higher current rating. Verify that the protected circuit can tolerate the increased trip threshold.

Q: What is the difference between glass and ceramic fuse cartridges?

A: Both types function as fast-blow cartridge fuses in the 3AB/3AG package. Glass fuses (0034.1741, 0312.375MXP) and ceramic fuses (7022.0550) differ in construction material, thermal characteristics, and breaking capacity. Ceramic construction typically provides higher breaking capacity (150 kA vs. 35 A in this comparison). Selection depends on circuit requirements and holder compatibility.

Q: Are all three parts compatible with the same 3AB/3AG fuse holder?

A: Yes. All three parts are 1/4" x 1-1/4" cartridge fuses designed for 3AB/3AG holders. Dimensional variations are minimal (31.80 mm vs. 31.75 mm length), and all fit standard holders for this package format.

Q: What regulatory approvals apply to each substitute?

A: The original 0034.1741 carries CSA approval. The SCHURTER 7022.0550 substitute carries UR approval. The Littelfuse 0312.375MXP substitute carries CE, CSA, and UL approvals. Verify that the selected substitute meets the regulatory requirements of your application jurisdiction.