3SBP 6-R Equivalent & Substitute Parts

Part Overview

The 3SBP 6-R is a 6A 250VAC glass cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG package format with slow-blow response characteristics. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and repair applications. The fuse provides protection in AC/DC circuits with a breaking capacity of 200A at rated voltage and operates across a temperature range of -55°C to 125°C.

Substiute Parts

3SBP 6-R

Bel Fuse Inc.In Stock: 11503SBP 6-R Datasheet

Current PartRFQ

MDL-V-6-R

Eaton - Electronics DivisionIn Stock: 1089MDL-V-6-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3SBP 6-R is determined by strict equivalence across the following critical parameters:

• Current Rating: 6 A (exact match required)
• Voltage Rating (AC): 250 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" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 200 A (exact match required)

The MDL-V-6-R from Eaton - Electronics Division meets all substitution criteria and is classified as an active product, providing a direct functional replacement for the obsolete 3SBP 6-R.

Parameter Comparison

Engineering Selection Recommendations

The MDL-V-6-R is the qualified substitute for the 3SBP 6-R based on the following engineering criteria:

• All critical electrical parameters (current rating, voltage rating, response time, breaking capacity) are identical
• Package and mounting specifications are equivalent within standard manufacturing tolerances
• The substitute maintains active product status, ensuring continued availability and supply chain reliability
• Both components carry relevant international certifications (CE, CSA) with overlapping approval agencies
• Both components meet RoHS compliance requirements
• Dimensional variations (0.006" diameter difference, 0.012" length difference) fall within acceptable mechanical tolerances for 3AB/3AG cartridge fuse standards and do not affect form-fit-function compatibility in through-hole applications

Frequently Asked Questions (FAQ)

Q: Can the MDL-V-6-R be used as a direct replacement for the 3SBP 6-R in existing circuit designs?

A: Yes. The MDL-V-6-R meets all electrical and mechanical specifications required for direct substitution. Both components are 6A 250VAC slow-blow glass cartridge fuses in 3AB/3AG package format with identical breaking capacity and mounting type.

Q: What are the dimensional differences between these two fuses?

A: The 3SBP 6-R measures 0.272" diameter x 1.280" length, while the MDL-V-6-R measures 0.266" diameter x 1.292" length. These variations are within standard manufacturing tolerances for 3AB/3AG cartridge fuses and do not affect mechanical fit in standard fuse holders.

Q: Are there any compliance or certification differences?

A: Both components carry CE and CSA certifications. The 3SBP 6-R includes cULus and PSE approvals, while the MDL-V-6-R carries UL approval. Both meet RoHS compliance standards. Selection should be based on specific regulatory requirements for your application.

Q: Why is the 3SBP 6-R classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The MDL-V-6-R, classified as active, provides continued availability for equivalent circuit protection requirements.

Q: Are there any resistance differences that would affect circuit performance?

A: DC cold resistance differs slightly (0.02 Ohms vs. 0.022 Ohms), representing a 0.002 Ohm variance. This difference is negligible in typical fuse circuit applications and does not affect protection characteristics or circuit operation.