Littelfuse 0313.150HXP Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0313.150HXP is a 150 mA, 250 V AC/DC slow-blow glass cartridge fuse designed for 3AB and 3AG holder applications. This fuse is actively manufactured and widely used in industrial and commercial electrical protection circuits. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and holder compatibility to ensure direct interchangeability in circuit protection applications.

Substiute Parts

0313.150HXP

Littelfuse Inc.In Stock: 12620313.150HXP Datasheet

Current PartRFQ

0313.150MXP

Littelfuse Inc.In Stock: 31250313.150MXP Datasheet

DirectRFQ

0034.5209

SCHURTER Inc.In Stock: 10480034.5209 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0313.150HXP are identified based on the following critical parameters that determine interchangeability:

• Current Rating: 150 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required for holder compatibility)
• Fuse Type: Cartridge, Glass (exact match required)
• Breaking Capacity @ Rated Voltage: 35 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

Two substitute parts meet these criteria: the Littelfuse 0313.150MXP and the SCHURTER 0034.5209. Both maintain identical electrical and mechanical specifications, ensuring direct replacement capability in 3AB and 3AG holder applications.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0313.150MXP is the primary substitute for the 0313.150HXP. Both parts are manufactured by Littelfuse Inc., carry active product status, and maintain identical electrical and mechanical specifications. Both parts hold CE, CSA, and UL certifications, ensuring compliance with international safety standards.

The SCHURTER 0034.5209 is a secondary substitute option. While it matches all critical electrical and mechanical parameters, it carries obsolete product status and lacks CE certification. The SCHURTER part holds CSA and UL certifications only. Selection of the SCHURTER substitute should be limited to applications where existing inventory must be utilized or where CE certification is not required.

Frequently Asked Questions (FAQ)

Q: Can the 0313.150MXP directly replace the 0313.150HXP?

A: Yes. The 0313.150MXP is a direct substitute. Both parts share identical current rating (150 mA), voltage rating (250 V AC), response time (slow blow), package dimensions (3AB, 3AG, 1/4" x 1-1/4"), and all electrical characteristics. Both are active products with full certification support.

Q: Is the SCHURTER 0034.5209 compatible with 3AB and 3AG holders?

A: Yes. The 0034.5209 maintains the same physical dimensions (0.250" Dia x 1.250" L) and package designation (3AB, 3AG, 1/4" x 1-1/4"), ensuring mechanical compatibility with standard holders. However, this part is obsolete and lacks CE certification.

Q: What is the difference between the Littelfuse and SCHURTER substitutes?

A: The primary differences are manufacturer, product status, and certification scope. Littelfuse 0313.150MXP is active with CE, CSA, and UL certifications. SCHURTER 0034.5209 is obsolete with CSA and UL certifications only. All electrical and mechanical parameters are equivalent.

Q: Are there any differences in melting I²t values between these parts?

A: The 0313.150HXP and 0313.150MXP both have a melting I²t of 0.27. The SCHURTER 0034.5209 has a melting I²t of 0.44. This difference reflects different internal fuse element designs but does not affect interchangeability for the specified 150 mA, 250 V AC/DC application.

Q: Which substitute should be selected for new designs?

A: The Littelfuse 0313.150MXP is the recommended substitute for new designs. It maintains active product status, full certification coverage (CE, CSA, UL), and identical specifications to the main part.