Littelfuse 0313012.HXP Glass Cartridge Fuse 12A 32VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0313012.HXP is a 12A 32VAC glass cartridge fuse with slow-blow response characteristics, designed for circuits requiring holder-mounted protection in 3AB and 3AG form factors. This component is actively manufactured and stocked. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications with identical electrical and mechanical requirements.

Substiute Parts

0313012.HXP

Littelfuse Inc.In Stock: 9340313012.HXP Datasheet

Current PartRFQ

0313012.MXP

Littelfuse Inc.In Stock: 18090313012.MXP Datasheet

DirectRFQ

BK/MDL-12-R

Eaton - Electronics DivisionIn Stock: 1022BK/MDL-12-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0313012.HXP are qualified based on strict equivalence across the following critical parameters:

• Current Rating: 12 A (exact match required)
• Voltage Rating (AC): 32 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Physical Dimensions: 0.250" Dia x 1.250" L (exact match required)
• Mounting Type: Requires Holder (exact match required)
• RoHS Compliance: ROHS3 Compliant (minimum requirement)

All identified substitutes meet these criteria and are suitable for direct replacement in applications currently using the 0313012.HXP.

Parameter Comparison

Engineering Selection Recommendations

All three parts—0313012.HXP, 0313012.MXP, and BK/MDL-12-R—are actively manufactured and meet ROHS3 compliance requirements. Selection between these equivalents may be based on:

• Inventory availability and lead time
• Manufacturer preference or qualification requirements
• Cost considerations
• Regional supply chain logistics

The 0313012.MXP (Littelfuse) offers higher current inventory (1712 Pcs) compared to the main part (920 Pcs), supporting faster procurement cycles. The BK/MDL-12-R (Eaton) provides cross-manufacturer redundancy with 992 Pcs in stock.

Frequently Asked Questions (FAQ)

Q: Can the 0313012.MXP be used as a direct replacement for the 0313012.HXP?

A: Yes. Both parts are manufactured by Littelfuse, share identical electrical ratings (12A, 32VAC), response characteristics (Slow Blow), and physical dimensions (0.250" Dia x 1.250" L). They are mechanically and electrically interchangeable.

Q: Is the Eaton BK/MDL-12-R compatible with existing 3AB and 3AG fuse holders?

A: Yes. The BK/MDL-12-R meets the same package specification (3AB, 3AG, 1/4" x 1-1/4") and physical dimensions as the Littelfuse parts, ensuring compatibility with standard fuse holders.

Q: What are the key parameters that determine substitutability?

A: Current rating (12A), voltage rating (32VAC), response time (Slow Blow), fuse type (Cartridge, Glass), package designation (3AB, 3AG), and physical dimensions (0.250" Dia x 1.250" L) must all match exactly. All identified substitutes meet these criteria.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three parts carry ROHS3 Compliant status and meet REACH Unaffected classification, supporting compliance requirements for regulated markets.

Q: Does the Eaton part have the same breaking capacity as the Littelfuse parts?

A: The Littelfuse parts specify 300A breaking capacity at rated voltage. The Eaton BK/MDL-12-R does not provide this specification in the available data; however, it meets all other electrical and mechanical equivalence criteria.