SCHURTER 0034.5232 Glass Cartridge Fuse — Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5232 is a 2.25 A, 250 V AC/DC slow-blow glass cartridge fuse in the 3AB/3AG form factor (1/4" × 1-1/4"). This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs requiring this electrical specification.

Key Parameters

Parameter	Value
Current Rating	2.25 A
Voltage Rating (AC)	250 V
Response Time	Slow Blow
Package / Case	3AB, 3AG, 1/4" × 1-1/4"
Fuse Type	Cartridge, Glass
Breaking Capacity @ Rated Voltage	100 A
Size / Dimension	0.250" Dia × 1.250" L (6.35 mm × 31.75 mm)
Approval Agencies	CSA, UL
Operating Temperature Range	−55°C to 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SCHURTER 0034.5232 is determined by strict equivalence across the following parameters:

Current Rating: 2.25 A (exact match required)
Voltage Rating: 250 V AC (exact match required)
Response Time: Slow Blow (exact match required)
Package / Case: 3AB, 3AG, 1/4" × 1-1/4" (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Breaking Capacity: 100 A (exact match required)
Physical Dimensions: 0.250" Dia × 1.250" L (exact match required)

All substitute parts listed below meet these criteria. Parts are grouped by manufacturer and product status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage (V AC)	Response Time	Package / Case	Breaking Capacity (A)	Size (Dia × L)	Product Status	Approval Agencies
0034.5232	SCHURTER Inc.	2.25	250	Slow Blow	3AB, 3AG, 1/4" × 1-1/4"	100	0.250" × 1.250" (6.35 × 31.75 mm)	Obsolete	CSA, UL
MDL-2-1/4-R	Eaton - Electronics Division	2.25	250	Slow Blow	3AB, 3AG, 1/4" × 1-1/4"	100	0.250" × 1.250" (6.35 × 31.75 mm)	Active	CE, CSA, UL
BK/MDL-2-1/4-R	Eaton - Electronics Division	2.25	250	Slow Blow	3AB, 3AG, 1/4" × 1-1/4"	100	0.250" × 1.250" (6.35 × 31.75 mm)	Active	CE, CSA, UL
03132.25HXP	Littelfuse Inc.	2.25	250	Slow Blow	3AB, 3AG, 1/4" × 1-1/4"	100	0.250" × 1.250" (6.35 × 31.75 mm)	Active	CE, CSA, K-MARK, PSE, UL
03132.25MXP	Littelfuse Inc.	2.25	250	Slow Blow	3AB, 3AG, 1/4" × 1-1/4"	100	0.250" × 1.250" (6.35 × 31.75 mm)	Active	CE, CSA, K-MARK, PSE, UL
03132.25VXP	Littelfuse Inc.	2.25	250	Slow Blow	3AB, 3AG, 1/4" × 1-1/4"	100	0.250" × 1.250" (6.35 × 31.75 mm)	Active	CE, CSA, KC, PSE, UL

Engineering Selection Recommendations

Primary Substitutes (Active Product Status)

The Eaton MDL-2-1/4-R and BK/MDL-2-1/4-R fuses are direct functional equivalents with active product status. Both carry CE, CSA, and UL certifications, meeting or exceeding the approval requirements of the original SCHURTER part.

The Littelfuse 03132.25HXP, 03132.25MXP, and 03132.25VXP fuses are parametric equivalents with active product status. These parts carry expanded certification coverage including K-MARK and PSE approvals, providing broader regulatory compliance for international applications.

Compliance Considerations

All substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the original part. The Littelfuse variants provide additional international certifications (K-MARK for Korea, PSE for Japan) compared to the SCHURTER original.

Inventory Availability

Littelfuse 03132.25HXP (7,649 units), Littelfuse 03132.25MXP (2,581 units), and Eaton MDL-2-1/4-R (706 units) offer the highest stock levels for immediate procurement.

Frequently Asked Questions (FAQ)

Q: Can I use a different current rating fuse as a substitute?

A: No. The current rating must be exactly 2.25 A. Using a fuse with a different current rating will alter circuit protection characteristics and may result in inadequate protection or nuisance tripping.

Q: Are all listed substitutes mechanically compatible with 3AB/3AG fuse holders?

A: Yes. All substitute parts are specified for 3AB, 3AG form factor with identical physical dimensions (0.250" Dia × 1.250" L). They are mechanically interchangeable in standard 3AB/3AG fuse holders.

Q: What is the difference between the Littelfuse 03132.25HXP, 03132.25MXP, and 03132.25VXP variants?

A: These three Littelfuse parts are parametrically equivalent with identical electrical specifications (2.25 A, 250 V, slow-blow response). The designations reflect different approval agency certifications. The 03132.25VXP includes KC (Korea) certification in addition to the certifications on the other variants.

Q: Can I substitute the SCHURTER 0034.5231 (2 A) for the 0034.5232 (2.25 A)?

A: No. The 0034.5231 has a 2 A current rating, which is not equivalent to the 2.25 A specification. Current rating must match exactly for proper circuit protection.

Q: Are the Eaton MDL-2-1/4-R and BK/MDL-2-1/4-R fuses interchangeable?

A: Yes. Both are Eaton products with identical electrical and mechanical specifications. The "BK" designation indicates a black-body variant, but electrical performance and compatibility are identical.

Q: What certifications should I verify for my specific application?

A: Verify that the substitute part carries the required certifications for your target market. The original SCHURTER part requires CSA and UL. All listed substitutes meet these requirements. Additional certifications (CE, K-MARK, PSE, KC) may be required depending on regional regulations.

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