SCHURTER 7040.3170 Equivalent & Substitute Parts

Part Overview

The SCHURTER 7040.3170 is a 6.3A 125VAC slow-blow glass cartridge fuse in 5x20mm form factor, designed for applications requiring reliable overcurrent protection with delayed response characteristics. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs. The substitute part maintains the same current rating and physical dimensions while offering enhanced voltage ratings and improved availability.

Substiute Parts

7040.3170

SCHURTER Inc.In Stock: 7947040.3170 Datasheet

Current PartRFQ

0001.2512

SCHURTER Inc.In Stock: 65280001.2512 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SCHURTER 0001.2512 qualifies as a functional substitute based on the following critical parameters:

• Current Rating Match: Both parts are rated at 6.3A, ensuring identical overcurrent protection thresholds
• Physical Compatibility: Both utilize the 5x20mm cartridge form factor, compatible with standard fuse holders
• Response Characteristic: Both employ slow-blow response time, maintaining the same inrush current tolerance profile
• Mounting Configuration: Both require a holder assembly, with no change to installation methodology
• Regulatory Compliance: Both achieve ROHS3 compliance and EAR99 classification

The substitute part offers enhanced AC voltage rating (250V vs. 125V) and introduces DC voltage capability (150V), providing broader application flexibility while maintaining backward compatibility at the original 125VAC operating point.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 0001.2512 is the designated substitute for the obsolete 7040.3170 based on electrical and mechanical parameter alignment. Selection criteria are as follows:

Primary Consideration: The substitute maintains identical current rating (6.3A) and physical form factor (5x20mm), ensuring direct compatibility with existing fuse holder assemblies and circuit protection requirements at 125VAC operation.

Compliance Advantage: The 0001.2512 holds active product status with expanded regulatory approvals (CCC, cURus, KC, PSE/JET, VDE) compared to the original part's UR certification, providing broader market acceptance and supply chain continuity.

Operational Envelope: The substitute's extended operating temperature range (-55°C to 125°C versus -40°C to 70°C) and enhanced breaking capacity (1.5kA versus 50A) provide improved performance margins without compromising the original application requirements.

Material Consideration: The transition from glass to ceramic construction in the substitute part does not affect functional compatibility at the specified 125VAC rating, as both materials meet the slow-blow response characteristic and current rating requirements.

Frequently Asked Questions (FAQ)

Q: Can the 0001.2512 directly replace the 7040.3170 in existing applications?

A: Yes. Both parts share identical current rating (6.3A), response time (slow-blow), and physical dimensions (5x20mm). The substitute operates within the original part's 125VAC specification and is compatible with standard 5x20mm fuse holders.

Q: What is the significance of the voltage rating difference (125V vs. 250V)?

A: The substitute's higher AC voltage rating (250V) provides design margin and broader application flexibility. At the original 125VAC operating point, both parts function identically. The higher rating does not affect performance in circuits designed for 125VAC operation.

Q: Why does the substitute have a ceramic construction instead of glass?

A: Ceramic construction offers improved breaking capacity (1.5kA versus 50A) and extended temperature range (-55°C to 125°C versus -40°C to 70°C). At the specified 6.3A current rating and slow-blow response, ceramic and glass constructions are functionally equivalent for this application.

Q: Are there any installation differences between the two parts?

A: No. Both parts require a standard 5x20mm fuse holder and are installed identically. No modifications to the fuse holder or circuit design are necessary.

Q: What is the inventory status of the substitute part?

A: The 0001.2512 is classified as active product status with 6,423 pieces in stock, ensuring reliable supply availability compared to the obsolete 7040.3170.

Q: Do both parts meet the same regulatory standards?

A: Both parts are ROHS3 compliant and EAR99 classified. The substitute holds additional certifications (CCC, cURus, KC, PSE/JET, VDE) beyond the original part's UR approval, providing expanded compliance coverage.