Littelfuse 0312030.VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0312030.VXP is a 30 A, 32 V AC/DC fast-blow glass cartridge fuse designed for use in 3AB and 3AG fuse holders. This component is classified as Active product status and is widely used in circuit protection applications requiring reliable overcurrent interruption. Substitute parts are identified when inventory constraints, supply chain disruptions, or application-specific requirements necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

0312030.VXP

LittelfuseIn Stock: 9030312030.VXP Datasheet

Current PartRFQ

0312030.HXP

Littelfuse Inc.In Stock: 8750312030.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0312030.VXP are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

• Current Rating: 30 A (exact match required)
• Voltage Rating (AC): 32 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Breaking Capacity @ Rated Voltage: 300 A (exact match required)
• Melting I²t: 3717 (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm) (exact match required)
• DC Cold Resistance: 0.0019 Ohms (exact match required)

The substitute part 0312030.HXP meets all electrical and mechanical parameters specified above, confirming direct substitution capability.

Parameter Comparison

Engineering Selection Recommendations

Both the 0312030.VXP and 0312030.HXP are Active product status components manufactured by Littelfuse with identical electrical and mechanical specifications. The 0312030.VXP carries CSA and UL approvals, while the 0312030.HXP carries CSA and cULus approvals. Both components are ROHS3 compliant and suitable for direct substitution in applications requiring 30 A, 32 V AC/DC fast-blow glass cartridge fuses in 3AB and 3AG holders. Selection between these parts may be determined by specific certification requirements of the end application or regional regulatory compliance needs.

Frequently Asked Questions (FAQ)

Q: Can the 0312030.HXP be used as a direct replacement for the 0312030.VXP?

A: Yes. Both parts share identical electrical ratings (30 A, 32 V AC/DC), fuse type (cartridge, glass), response time (fast blow), package configuration (3AB, 3AG, 1/4" x 1-1/4"), breaking capacity (300 A), melting I²t (3717), operating temperature range (-55°C to 125°C), and DC cold resistance (0.0019 Ohms). Direct substitution is supported.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of current rating (30 A), voltage rating (32 V AC), fuse type (cartridge, glass), response time (fast blow), package dimensions (0.250" Dia x 1.250" L), breaking capacity (300 A), melting I²t (3717), operating temperature range (-55°C to 125°C), and DC cold resistance (0.0019 Ohms).

Q: Are there differences in certification between these parts?

A: The 0312030.VXP carries CSA and UL approvals. The 0312030.HXP carries CSA and cULus approvals. Both are ROHS3 compliant. Selection should be based on specific certification requirements of the application.

Q: What holder types are compatible with these fuses?

A: Both the 0312030.VXP and 0312030.HXP are designed for use in 3AB and 3AG fuse holders with dimensions of 1/4" x 1-1/4".

Q: What is the operating temperature range for these components?

A: Both parts operate within the temperature range of -55°C to 125°C.