Littelfuse 0326008.H Ceramic Fuse 8A 250VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0326008.H is an 8A 250VAC ceramic cartridge fuse (Series 326) designed for 3AB/3AG holder applications with 1/4" x 1-1/4" dimensions. This part is classified as obsolete. Due to its obsolete status, direct replacement with active production equivalents is necessary for new designs and ongoing procurement. Substitute parts maintain identical electrical and mechanical specifications while offering current manufacturing availability and enhanced compliance certifications.

Key Parameters

Parameter	Value
Current Rating	8 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Ceramic
Response Time	Slow Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4"
Breaking Capacity @ Rated Voltage	400A
Melting I²t	67.1
Size / Dimension	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
DC Cold Resistance	0.0191 Ohms
Mounting Type	Requires Holder

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on substitution type and compliance status:

Direct Manufacturer Equivalents (Littelfuse): Parts 0326008.HXP maintain identical electrical and mechanical parameters with enhanced RoHS3 compliance and extended operating temperature range (-55°C ~ 125°C). These are direct production replacements from the original manufacturer.

Parametric Equivalents (Littelfuse): Parts 0326008.MXP and 0326008.VXP provide identical core electrical specifications (8A, 250VAC, 400A breaking capacity, 67.1 I²t) with active product status and RoHS3 compliance. These differ only in packaging configuration and certification scope.

Cross-Manufacturer Alternatives: Eaton MDA-8-R and BK/MDA-8-R ceramic fuses match the 8A, 250VAC, 3AB/3AG package specifications. These maintain compatibility with holder requirements and slow-blow response characteristics.

Alternative Technology (Glass Fuse): SCHURTER 0001.2533 provides functional equivalence with glass cartridge construction, maintaining 8A, 250VAC ratings and 3AB/3AG package compatibility. This option introduces different electrical characteristics (higher I²t value of 360, different breaking capacity profile) and should be selected only when glass fuse technology is explicitly required.

Substitution is determined by matching: current rating (8A), AC voltage rating (250V), fuse type (ceramic cartridge), response time (slow blow), and mechanical package (3AB/3AG, 1/4" x 1-1/4").

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage AC (V)	Fuse Type	Response Time	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ohms)	Product Status	RoHS Status
0326008.H	Littelfuse Inc.	8	250	Ceramic	Slow Blow	400	67.1	0.0191	Obsolete	Non-compliant
0326008.HXP	Littelfuse Inc.	8	250	Ceramic	Slow Blow	400	67.1	0.0193	Active	ROHS3 Compliant
0326008.MXP	Littelfuse Inc.	8	250	Ceramic	Slow Blow	400	67.1	0.0193	Active	ROHS3 Compliant
0326008.VXP	Littelfuse Inc.	8	250	Ceramic	Slow Blow	400	67.1	0.0193	Active	ROHS3 Compliant
BK/MDA-8-R	Eaton - Electronics Division	8	250	Ceramic	Slow Blow	200	188	0.013	Active	ROHS3 Compliant
MDA-8-R	Eaton - Electronics Division	8	250	Ceramic	Slow Blow	200	188	0.013	Active	ROHS3 Compliant
0001.2533	SCHURTER Inc.	8	250	Glass	Slow Blow	1500 (AC)	360	N/A	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: Littelfuse 0326008.HXP or 0326008.MXP. Both are active production parts from the original manufacturer with identical electrical specifications to the obsolete 0326008.H. These parts provide RoHS3 compliance, extended operating temperature range (-55°C ~ 125°C), and certifications including CE, CSA, K-MARK, PSE, and UL. Selection between HXP and MXP depends on packaging requirements and certification scope; both are electrically and mechanically interchangeable.

Secondary Recommendation: Littelfuse 0326008.VXP. Functionally equivalent to HXP and MXP with identical electrical parameters and RoHS3 compliance. Certification scope includes CE, CSA, KC, PSE, and UL. Select when specific regional certifications (KC) are required.

Cross-Manufacturer Alternative: Eaton BK/MDA-8-R or MDA-8-R. These ceramic fuses maintain 8A, 250VAC ratings and 3AB/3AG package compatibility. Note that breaking capacity is reduced to 200A and melting I²t is higher at 188 compared to the Littelfuse specification of 400A and 67.1. These parts are suitable for applications where the lower breaking capacity and different thermal response are acceptable. Both variants are RoHS3 compliant and CSA/UL certified.

Alternative Technology Option: SCHURTER 0001.2533. Glass cartridge fuse with 8A, 250VAC ratings and 3AB/3AG compatibility. This part exhibits significantly different electrical characteristics: breaking capacity of 1.5kA AC (versus 400A for ceramic), melting I²t of 360 (versus 67.1), and DC voltage rating of 63V. Select only when glass fuse technology is explicitly specified or when higher breaking capacity is required. Operating temperature range is -40°C ~ 85°C.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 0326008.H with 0326008.HXP? A: Yes. Both parts are ceramic cartridge fuses with identical 8A, 250VAC ratings, 400A breaking capacity, 67.1 melting I²t, and 3AB/3AG package dimensions. The HXP is the active production equivalent with enhanced RoHS3 compliance and extended operating temperature range.

Q: What is the difference between 0326008.HXP, 0326008.MXP, and 0326008.VXP? A: All three parts are electrically and mechanically identical with 8A, 250VAC ratings and 400A breaking capacity. Differences are limited to packaging configuration and regional certification scope. HXP and MXP include K-MARK certification; VXP includes KC certification. Selection depends on packaging requirements and target market certifications.

Q: Can I use Eaton MDA-8-R instead of Littelfuse 0326008.H? A: Mechanical and electrical compatibility exists for 8A, 250VAC, ceramic cartridge, slow-blow response, and 3AB/3AG package. However, breaking capacity is reduced to 200A (versus 400A) and melting I²t is 188 (versus 67.1). Use only if the application tolerates these electrical characteristic differences and lower breaking capacity.

Q: Is SCHURTER 0001.2533 a suitable replacement? A: SCHURTER 0001.2533 is mechanically compatible (3AB/3AG package, 1/4" x 1-1/4" dimensions) and maintains 8A, 250VAC ratings. However, it is a glass fuse with fundamentally different electrical characteristics: melting I²t of 360 (versus 67.1), breaking capacity of 1.5kA AC (versus 400A), and DC voltage rating of 63V. Select only when glass fuse technology is required or when higher breaking capacity is specified.

Q: What certifications should I verify for my application? A: Littelfuse 0326008.HXP, 0326008.MXP, and 0326008.VXP carry CE, CSA, UL certifications (with regional variations: K-MARK for HXP/MXP, KC for VXP). Eaton MDA-8-R variants carry CE, CSA, UL certifications. SCHURTER 0001.2533 carries cURus certification. Verify that the selected part's certification scope matches your application and regional requirements.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All active production substitute parts listed (0326008.HXP, 0326008.MXP, 0326008.VXP, BK/MDA-8-R, MDA-8-R, and 0001.2533) are RoHS3 compliant. The original 0326008.H is RoHS non-compliant.

Q: What is the operating temperature range for each part? A: Littelfuse ceramic fuses (0326008.HXP, 0326008.MXP, 0326008.VXP) operate from -55°C to 125°C. Eaton MDA-8-R variants do not specify an operating temperature range. SCHURTER 0001.2533 operates from -40°C to 85°C. Verify temperature requirements for your application.

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