SCHURTER 7181.4123 Equivalent & Substitute Parts

Part Overview

The SCHURTER 7181.4123 is a 3A 500VAC cartridge fuse in the A10 GG series, designed for electrical and industrial applications requiring holder-mounted protection. This part is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new designs. The fuse operates across a temperature range of -40°C to 85°C with a breaking capacity of 120kA at rated voltage and is ROHS3 compliant.

Substiute Parts

7181.4123

SCHURTER Inc.In Stock: 10067181.4123 Datasheet

Current PartRFQ

0FLQ004.T

Littelfuse Inc.In Stock: 7070FLQ004.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SCHURTER 7181.4123 is determined by the following critical parameters:

• Current Rating: 3A nominal requirement
• Voltage Rating: 500 VAC minimum
• Package / Case: 5AG, 10mm x 38mm (Midget) form factor
• Mounting Type: Requires Holder compatibility
• Fuse Type: Cartridge configuration

The Littelfuse 0FLQ004.T qualifies as a substitute based on matching package dimensions, voltage rating, and mounting requirements. However, the current rating differs at 4A versus the original 3A specification.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0FLQ004.T is an active product with current manufacturer support and CSA/UL approvals, addressing the obsolescence status of the SCHURTER 7181.4123. Both parts maintain ROHS3 compliance and 5AG package compatibility for direct holder mounting.

Selection between these parts must account for the current rating differential: the substitute operates at 4A versus the original 3A specification. The Littelfuse part also provides dual voltage capability (500 VAC / 300 VDC) and slow-blow response characteristics not present in the original specification data.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0FLQ004.T directly replace the SCHURTER 7181.4123 in existing designs?

A: Physical compatibility is confirmed through matching 5AG package dimensions and holder mounting requirements. However, the 4A current rating differs from the original 3A specification and must be evaluated against circuit protection requirements.

Q: What is the significance of the 5AG package designation?

A: The 5AG designation identifies the cartridge fuse form factor as a midget type with 10mm diameter and 38mm length. This standardized package ensures mechanical compatibility across holder designs from different manufacturers.

Q: How do the breaking capacity ratings compare?

A: The SCHURTER part specifies 120kA breaking capacity at rated voltage, while the Littelfuse substitute provides 10kA. This represents a significant difference in fault current handling capability that must be verified against system requirements.

Q: What does "Requires Holder" mean for mounting?

A: Both parts are cartridge fuses that must be installed in a compatible fuse holder assembly. They are not panel-mount or inline fuses and require a separate holder component for circuit integration.

Q: Are there compliance differences between the two parts?

A: The Littelfuse 0FLQ004.T carries CSA and UL approvals, while approval agency information is not provided for the SCHURTER part. Both maintain ROHS3 compliance and are REACH unaffected.