SCHURTER 0034.7320 Board Mount Fuse 3.15A 250VAC Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.7320 is a 3.15 A, 250 V AC/DC board mount fuse with slow blow response characteristics, designed for through-hole radial mounting in vertical orientation. This active product is housed in a radial can package with 8.50mm diameter and 8.50mm height dimensions. The fuse is ROHS3 compliant and approved by cULus certification authority. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and functional performance parameters align with the original specification, enabling direct replacement in circuit protection applications.

Substiute Parts

0034.7320

SCHURTER Inc.In Stock: 15970034.7320 Datasheet

Current PartRFQ

0034.6980

SCHURTER Inc.In Stock: 41100034.6980 Datasheet

Parametric EquivalentRFQ

37413150000

Littelfuse Inc.In Stock: 549737413150000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on equivalence level:

Parametric Equivalent: SCHURTER 0034.6980 matches all critical electrical parameters (3.15 A, 250 V AC, slow blow response) and mechanical specifications (radial can, vertical orientation, 8.50mm x 8.50mm). Both parts are manufactured by SCHURTER Inc. and share identical mounting type, fuse type classification, and operating temperature range. The primary distinction is the series designation (MXT 250 versus MSTU 250) and breaking capacity rating (100A versus 50A).

Similar Manufacturer Part: Littelfuse 37413150000 provides electrical equivalence (3.15 A, 250 V AC, slow blow response) and compatible mechanical form factor (radial can, vertical mounting). Physical dimensions are 0.335" Dia x 0.315" H (8.50mm x 8.00mm), representing a 0.50mm height variance from the original specification. This part is certified by CSA and cULus authorities.

Parameter Comparison

Engineering Selection Recommendations

SCHURTER 0034.6980 is the primary parametric equivalent, offering identical electrical and mechanical specifications with enhanced breaking capacity (100A versus 50A). Both parts carry active product status and ROHS3 compliance. The SCHURTER 0034.6980 provides broader regulatory approvals (CCC, cURus, KC, PSE/JET, VDE) compared to the original part's cULus certification alone, supporting applications requiring multi-regional compliance.

Littelfuse 37413150000 provides electrical equivalence with compatible mechanical form factor. The 0.50mm height reduction (8.00mm versus 8.50mm) must be evaluated against PCB layout constraints and clearance requirements. This part maintains cULus certification alongside CSA approval, ensuring compatibility with North American regulatory frameworks. The lower melting I²t value (22 versus 55) reflects different thermal response characteristics within the slow blow classification.

Selection between these substitutes depends on regulatory certification requirements, available PCB clearance, and thermal response specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can SCHURTER 0034.6980 directly replace SCHURTER 0034.7320?

A: Yes. Both parts share identical current rating (3.15 A), voltage rating (250 V AC), response time (slow blow), mounting type (through hole), package style (radial can, vertical), and physical dimensions (8.50mm x 8.50mm). The series designation change (MXT 250 to MSTU 250) and increased breaking capacity (100A versus 50A) do not prevent direct substitution in equivalent circuit protection applications.

Q: What is the significance of the 0.50mm height difference in the Littelfuse part?

A: The Littelfuse 37413150000 measures 8.00mm height versus 8.50mm for the original specification. This dimensional variance requires verification against PCB layout, component spacing, and clearance requirements. Radial can orientation and diameter (8.50mm) remain identical, supporting mechanical compatibility in most through-hole mounting scenarios.

Q: How do breaking capacity ratings affect substitution?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. SCHURTER 0034.6980 provides 100A breaking capacity versus 50A for both the original part and Littelfuse equivalent. Higher breaking capacity does not compromise circuit protection but may provide enhanced safety margin in high-fault-current environments. Selection should align with system fault current specifications.

Q: Are regulatory certifications equivalent across these parts?

A: No. SCHURTER 0034.7320 carries cULus certification. SCHURTER 0034.6980 includes CCC, cURus, KC, PSE/JET, and VDE approvals. Littelfuse 37413150000 holds CSA and cULus certifications. Application requirements determine which certification portfolio is necessary. Multi-regional deployments may benefit from the broader approval scope of SCHURTER 0034.6980.

Q: What does melting I²t indicate?

A: Melting I²t represents the thermal energy required to melt the fuse element, expressed as current squared multiplied by time. SCHURTER 0034.7320 specifies 55, SCHURTER 0034.6980 specifies 57, and Littelfuse 37413150000 specifies 22. These values reflect different fuse element designs within the slow blow classification. Lower I²t values indicate faster thermal response to sustained overcurrent conditions.