2JS 4.6-R Equivalent & Substitute Parts

Part Overview

The 2JS 4.6-R is a 4.6 A slow blow glass cartridge fuse manufactured by Bel Fuse Inc., rated for 350 V AC and 140 V DC operation. This fuse is designed for applications requiring the 2AG form factor (5mm x 15mm) and operates across a temperature range of -55°C to 125°C. The part maintains active product status with robust inventory availability. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

2JS 3.5-R

Bel Fuse Inc.In Stock: 28492JS 3.5-R Datasheet

Current PartRFQ

022903.5MXP

Littelfuse Inc.In Stock: 1686022903.5MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2JS 4.6-R is determined by the following critical parameters:

• Current Rating: Must be 4.6 A
• Fuse Type: Must be Cartridge, Glass
• Package / Case: Must be 2AG, 5mm x 15mm form factor
• Response Time: Must be Slow Blow
• Voltage Rating - AC: Must meet or exceed 350 V AC
• Voltage Rating - DC: Must meet or exceed 140 V DC
• Operating Temperature Range: Must support -55°C ~ 125°C
• Approval Agencies: Must maintain compliance certifications

The substitute part 022904.6MXP (Littelfuse Inc.) meets the current rating, fuse type, package form factor, and response time requirements. However, voltage ratings are lower (250 V AC, 125 V DC) than the main part, which restricts its use to applications operating below these thresholds. Both parts maintain active product status, RoHS3 compliance, and equivalent operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

Both the 2JS 4.6-R and 022904.6MXP maintain active product status and ROHS3 compliance. The 2JS 4.6-R is suitable for applications requiring 350 V AC and 140 V DC operation. The 022904.6MXP is suitable for applications operating at 250 V AC and 125 V DC or lower. Selection between these parts must be based on the specific voltage requirements of the target application. Both parts carry equivalent regulatory certifications (CE, CSA, PSE) with the 2JS 4.6-R additionally certified by cURus and the 022904.6MXP by UL. Mechanical compatibility is assured through identical 2AG form factor specifications.

Frequently Asked Questions (FAQ)

Q: Can 022904.6MXP be used as a direct replacement for 2JS 4.6-R?

A: Direct replacement is possible only in applications operating at 250 V AC and 125 V DC or lower. The 022904.6MXP has lower voltage ratings than the 2JS 4.6-R and cannot be used in circuits designed for 350 V AC or 140 V DC operation.

Q: Are the physical dimensions compatible between these parts?

A: Yes. Both parts use the 2AG form factor with 5mm x 15mm dimensions and require the same holder. Physical installation compatibility is confirmed.

Q: What is the difference in breaking capacity between these fuses?

A: The 2JS 4.6-R has a breaking capacity of 100A AC and 150A DC at rated voltage. The 022904.6MXP has a breaking capacity of 100A AC and 10kA DC at rated voltage. Breaking capacity differences do not affect substitution eligibility but reflect different fault current handling characteristics.

Q: Do both parts have the same regulatory approvals?

A: Both parts carry CE, CSA, and PSE certifications. The 2JS 4.6-R includes cURus approval, while the 022904.6MXP includes UL approval. Application-specific regulatory requirements must be verified before selection.

Q: What is the melting I²t difference, and does it affect substitution?

A: The 2JS 4.6-R has a melting I²t of 69, while the 022904.6MXP has a melting I²t of 110. This indicates different thermal response characteristics. Substitution must be verified against circuit protection requirements.