Equivalent & Substitute Parts for MDQ-10 Glass Cartridge Fuse

Part Overview

The MDQ-10 is a 10 A, 32 V AC/DC slow blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for use in 3AB and 3AG holders with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The product is active and currently in stock with 925 units available. Substitute parts are necessary to address supply chain flexibility, alternative sourcing options, and specific application requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Current Rating	10 A
Voltage Rating (AC)	32 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4"
Breaking Capacity @ Rated Voltage	1 kA (MDQ-10); 300 A (Littelfuse alternatives)
Mounting Type	Requires Holder
Size / Dimension	0.250" Dia x 1.250" L (6.35mm x 31.75mm)

Substitute Part Grouping Explanation

Substitution of the MDQ-10 is determined by strict equivalence across the following parameters:

Critical Parameters for Substitution:

Current Rating: 10 A (exact match required)
Voltage Rating (AC): 32 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Slow Blow (exact match required)
Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
Mounting Type: Requires Holder (exact match required)
Physical Dimensions: 0.250" Dia x 1.250" L (exact match required)

All identified substitute parts meet these critical parameters. Variations in breaking capacity, DC cold resistance, melting I²t, and approval agencies are secondary characteristics that do not affect basic substitutability within the specified electrical and mechanical constraints.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage Rating (AC)	Response Time	Package / Case	Size / Dimension	Breaking Capacity @ Rated Voltage	DC Cold Resistance (Ohms)	Approval Agency	Product Status	Inventory (Pcs)
MDQ-10	Eaton - Electronics Division	10	32 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	1 kA	0.0072	CSA, UL	Active	925
BK/MDL-10-R	Eaton - Electronics Division	10	32 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	1 kA	0.01	CE, CSA, UL	Active	1273
0313010.HXIDP	Littelfuse Inc.	10	32 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	300 A	0.0083	UL	Active	857
0313010.HXP	Littelfuse Inc.	10	32 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	300 A	0.0083	UL	Active	767
0313010.MXP	Littelfuse Inc.	10	32 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	300 A	0.0083	UL	Active	1692
0313010.VXP	Littelfuse Inc.	10	32 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	300 A	0.0083	CE, CSA, PSE, UL	Active	890

Engineering Selection Recommendations

All substitute parts listed are electrically and mechanically equivalent to the MDQ-10 and are suitable for direct replacement within applications requiring a 10 A, 32 V AC/DC slow blow glass cartridge fuse in a 3AB/3AG holder.

Eaton MDL Series (BK/MDL-10-R): This part is manufactured by the same supplier as the MDQ-10 and carries CE, CSA, and UL approvals. It offers the highest inventory availability at 1273 units and maintains the same 1 kA breaking capacity as the original part.

Littelfuse 313 Series (0313010.HXIDP, 0313010.HXP, 0313010.MXP, 0313010.VXP): These parts are manufactured by Littelfuse Inc. and carry UL approval. The 0313010.VXP variant includes additional CE, CSA, and PSE approvals. All Littelfuse variants feature a 300 A breaking capacity and are RoHS3 compliant. The 0313010.MXP variant offers the highest inventory at 1692 units.

All parts are active products with current availability and meet the specified electrical and mechanical requirements for substitution.

Frequently Asked Questions (FAQ)

Q: Can the MDQ-10 be replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts meet the critical electrical and mechanical parameters: 10 A current rating, 32 V AC voltage rating, slow blow response time, glass cartridge type, and 3AB/3AG package dimensions of 1/4" x 1-1/4". Direct substitution is supported.

Q: What is the difference between the Eaton MDL series and Littelfuse 313 series substitutes?

A: Both series are electrically equivalent. The primary differences are manufacturer, breaking capacity (Eaton MDQ/MDL: 1 kA; Littelfuse: 300 A), approval agencies, and DC cold resistance values. The Littelfuse variants include RoHS3 compliance and REACH unaffected status.

Q: Are there differences in approval certifications between the substitute parts?

A: Yes. The MDQ-10 carries CSA and UL approvals. The BK/MDL-10-R adds CE approval. The Littelfuse 0313010.HXIDP, 0313010.HXP, and 0313010.MXP carry UL approval only. The 0313010.VXP carries CE, CSA, PSE, and UL approvals, providing the broadest certification coverage.

Q: Do the substitute parts fit the same holder as the MDQ-10?

A: Yes. All substitute parts are specified for 3AB and 3AG holders with identical physical dimensions of 0.250" diameter by 1.250" length (6.35mm x 31.75mm). No holder modification is required.

Q: What is the significance of the different breaking capacity values?

A: The MDQ-10 and BK/MDL-10-R have a 1 kA breaking capacity, while the Littelfuse variants have a 300 A breaking capacity. Both values are within acceptable ranges for this fuse category and do not affect substitutability for standard circuit protection applications at the specified 10 A, 32 V rating.

Q: Which substitute part has the best inventory availability?

A: The 0313010.MXP (Littelfuse) has the highest inventory at 1692 units, followed by BK/MDL-10-R (Eaton) at 1273 units.

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