Littelfuse 0362003.H Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0362003.H is a 3 A, 125 V AC/DC fast-blow glass cartridge fuse in the 8AG form factor (1/4" x 1"). This fuse is designed for circuits requiring holder-mounted protection and is actively manufactured. Equivalent and substitute parts may be required due to inventory availability, regional sourcing preferences, or voltage rating requirements for specific circuit applications.

Substiute Parts

0362003.H

Littelfuse Inc.In Stock: 8100362003.H Datasheet

Current PartRFQ

BK/AGX-3

Eaton - Electronics DivisionIn Stock: 991BK/AGX-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Littelfuse 0362003.H is determined by the following critical parameters:

• Current Rating: Must be 3 A (exact match required)
• Package / Case: Must be 8AG, 1/4" x 1" (physical and electrical compatibility with existing holders)
• Fuse Type: Must be Cartridge, Glass (functional equivalence)
• Response Time: Must be Fast Blow (circuit protection characteristic)
• Mounting Type: Must be Requires Holder (installation compatibility)

The Eaton BK/AGX-3 qualifies as a substitute based on matching current rating, package form factor, fuse type, response time, and mounting requirements. The voltage rating difference (250 V vs. 125 V) does not prevent substitution, as a higher voltage-rated fuse can safely operate in a lower voltage circuit.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0362003.H and Eaton BK/AGX-3 are active products with current manufacturing status and recognized safety certifications (UL/CSA and cULus respectively). Selection between these parts should be based on:

• Circuit Voltage Requirements: The Littelfuse 0362003.H is rated for 125 V AC circuits. The Eaton BK/AGX-3, rated for 250 V AC, is suitable for 125 V circuits and provides additional voltage margin.
• Holder Compatibility: Both parts use the 8AG form factor and require a compatible fuse holder. Verify holder specifications before substitution.
• Dimensional Tolerance: The Eaton part has a slightly longer length (1.042" vs. 1.000"). Confirm holder clearance before installation.
• Certification Alignment: Both parts carry recognized safety approvals appropriate for industrial and consumer applications.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/AGX-3 be used as a direct replacement for the Littelfuse 0362003.H?

A: Yes, the Eaton BK/AGX-3 is a functional substitute. Both parts share the same current rating (3 A), fuse type (cartridge glass), response time (fast blow), and 8AG package form factor. The higher voltage rating of the Eaton part (250 V vs. 125 V) does not prevent its use in a 125 V circuit.

Q: What is the significance of the voltage rating difference?

A: A fuse rated for higher voltage can safely operate at lower voltages. The Eaton BK/AGX-3 (250 V rated) will function correctly in a 125 V circuit. The voltage rating indicates the maximum circuit voltage for which the fuse is designed; operating below this rating does not compromise protection.

Q: Will the Eaton part fit in my existing fuse holder?

A: Both parts use the 8AG form factor (1/4" x 1"). The Eaton part is 0.042" longer (1.042" vs. 1.000"). Verify that your fuse holder has sufficient internal clearance to accommodate this dimensional difference before installation.

Q: Are there any compliance or certification differences?

A: The Littelfuse part carries CSA and UL approvals. The Eaton part carries cULus approval (combined UL and CSA certification). Both certifications are recognized for industrial and consumer circuit protection applications.

Q: What is the breaking capacity specification?

A: The Eaton BK/AGX-3 specifies a breaking capacity of 100 A at rated voltage. The Littelfuse 0362003.H does not provide this specification in the available data. Breaking capacity indicates the maximum fault current the fuse can safely interrupt without rupturing the fuse element or holder.