Littelfuse 0318010.H Glass Cartridge Fuse 10A 250VAC 3AB 3AG Equivalent & Substitute Parts

Part Overview

The Littelfuse 0318010.H is a 10 A 250 V AC/DC glass cartridge fuse with fast-blow response characteristics, designed for through-hole mounting in 3AB and 3AG package formats. This component is classified as obsolete, which necessitates identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct circuit board replacement.

Key Parameters

Parameter	Value
Current Rating	10 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4" (Axial)
Mounting Type	Through Hole
Size / Dimension	0.275" Dia x 1.288" L (6.99mm x 32.72mm)
Melting I²t	298
DC Cold Resistance	0.00925 Ohms

Substitute Part Grouping Explanation

Substitution of the obsolete 0318010.H is based on strict equivalence across the following critical parameters:

Current Rating: 10 A (exact match required)
Voltage Rating: 250 V AC (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" (Axial) (exact match required)
Mounting Type: Through Hole (exact match required)
Physical Dimensions: 0.275" Dia x 1.288" L (exact match required)
Melting I²t: 298 (exact match required)

All substitute parts listed below meet these criteria and are manufactured by Littelfuse Inc. in the 318 series. The primary distinction between the main part and substitutes is product status (active vs. obsolete) and enhanced compliance certifications in the substitute variants.

Parameter Comparison

Parameter	0318010.H (Main)	0318010.HXP	0318010.MXP	0318010.VXP
Current Rating (Amps)	10 A	10 A	10 A	10 A
Voltage Rating - AC	250 V	250 V	250 V	250 V
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass
Response Time	Fast Blow	Fast Blow	Fast Blow	Fast Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4" (Axial)	3AB, 3AG, 1/4" x 1-1/4" (Axial)	3AB, 3AG, 1/4" x 1-1/4" (Axial)	3AB, 3AG, 1/4" x 1-1/4" (Axial)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Size / Dimension	0.275" Dia x 1.288" L (6.99mm x 32.72mm)	0.275" Dia x 1.288" L (6.99mm x 32.72mm)	0.275" Dia x 1.288" L (6.99mm x 32.72mm)	0.275" Dia x 1.288" L (6.99mm x 32.72mm)
Melting I²t	298	298	298	298
DC Cold Resistance	0.00925 Ohms	0.0093 Ohms	0.0093 Ohms	0.0093 Ohms
Breaking Capacity @ Rated Voltage	35 A	200 A	200 A	200 A
Product Status	Obsolete	Active	Active	Active
Approval Agency	CSA, UL	CE, CSA, KC, PSE, UL	CE, CSA, KC, PSE, UL	CE, CSA, KC, PSE, UL
Operating Temperature	Not specified	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three substitute parts (0318010.HXP, 0318010.MXP, 0318010.VXP) are direct functional equivalents to the obsolete 0318010.H and are suitable for replacement in applications requiring a 10 A 250 V AC/DC fast-blow glass cartridge fuse in 3AB/3AG package format.

The substitute parts offer the following advantages over the main part:

Active product status with ongoing manufacturer support
Enhanced regulatory compliance: CE, KC, and PSE certifications in addition to CSA and UL
ROHS3 compliance, addressing environmental and material restriction requirements
Specified operating temperature range (-55°C ~ 125°C)
Improved breaking capacity (200 A vs. 35 A at rated voltage)
Marginally lower DC cold resistance (0.0093 Ohms vs. 0.00925 Ohms)

Selection among the three substitute variants should be based on inventory availability and packaging requirements (all are supplied in bulk packaging).

Frequently Asked Questions (FAQ)

Q: Can 0318010.HXP, 0318010.MXP, and 0318010.VXP be used interchangeably with 0318010.H?

A: Yes. All three substitute parts maintain identical electrical and mechanical specifications across current rating, voltage rating, fuse type, response time, package format, and physical dimensions. They are direct functional equivalents.

Q: What is the difference between the three substitute parts?

A: The three substitute parts (0318010.HXP, 0318010.MXP, 0318010.VXP) are electrically and mechanically identical. Differences exist only in inventory levels and internal manufacturing variants designated by the suffix code (HXP, MXP, VXP). Selection should be based on availability.

Q: Why do the substitute parts have a higher breaking capacity (200 A vs. 35 A)?

A: The breaking capacity specification reflects the maximum current the fuse can safely interrupt without rupturing the cartridge. The higher breaking capacity in substitute parts indicates improved design robustness while maintaining the same 10 A trip threshold. This does not affect the fuse's protective function in circuits designed for 10 A operation.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three substitute parts (0318010.HXP, 0318010.MXP, 0318010.VXP) are ROHS3 compliant. The original 0318010.H is RoHS non-compliant.

Q: What certifications do the substitute parts carry?

A: The substitute parts carry CE, CSA, KC, PSE, and UL certifications. The original part carries only CSA and UL certifications.

Q: Is the slight difference in DC cold resistance (0.0093 Ohms vs. 0.00925 Ohms) significant?

A: No. The difference of 0.00005 Ohms is negligible for circuit operation and does not affect the fuse's protective characteristics or performance in standard applications.

Q: What is the operating temperature range for the substitute parts?

A: The substitute parts are rated for operation from -55°C to 125°C. The original part does not specify an operating temperature range.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message