SCHURTER 2020.0009 Equivalent & Substitute Parts

Part Overview

The SCHURTER 2020.0009 is a 3.15A 250VAC fuse cartridge in 5x20mm form factor, designed for telecom applications. This part is classified as obsolete, necessitating identification of active equivalent components that maintain identical electrical and mechanical specifications. Substitute parts must match the current rating, voltage rating, response time, package dimensions, and breaking capacity to ensure direct functional replacement.

Key Parameters

Parameter	Value
Current Rating	3.15A
Voltage Rating (AC)	250VAC
Response Time	Slow Blow
Package / Case	5mm x 20mm
Fuse Type	Cartridge
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	1.5kA

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Current Rating: 3.15A (exact match required)
Voltage Rating: 250VAC (exact match required)
Response Time: Slow Blow (exact match required)
Package Dimensions: 5mm x 20mm (exact match required)
Breaking Capacity: 1.5kA (exact match required)
Mounting Configuration: Requires Holder (exact match required)

All identified substitute parts meet these criteria and are classified as active products, making them suitable for direct replacement of the obsolete SCHURTER 2020.0009.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage Rating (VAC)	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Product Status	Melting I²t
2020.0009	SCHURTER Inc.	3.15	250	Slow Blow	5mm x 20mm	1.5kA	Obsolete	33.7
02153.15HXP	Littelfuse Inc.	3.15	250	Slow Blow	5mm x 20mm	1.5kA	Active	43.255
02153.15MXP	Littelfuse Inc.	3.15	250	Slow Blow	5mm x 20mm	1.5kA	Active	43.255
02153.15TXP	Littelfuse Inc.	3.15	250	Slow Blow	5mm x 20mm	1.5kA	Active	43.255
5HT 3.15-R	Bel Fuse Inc.	3.15	250	Slow Blow	5mm x 20mm	1.5kA	Active	31
BK/S505-3.15-R	Eaton - Electronics Division	3.15	250	Slow Blow	5mm x 20mm	1.5kA	Active	36.6
S505-3.15-R	Eaton - Electronics Division	3.15	250	Slow Blow	5mm x 20mm	1.5kA	Active	36.6

Engineering Selection Recommendations

All substitute parts listed above are active products with established supply chains and current manufacturing status. Selection among these equivalents should be based on:

Approval Agency certifications required for the application (all substitutes carry CSA and VDE certifications matching the original part)
Melting I²t characteristics, which vary slightly among manufacturers but remain within acceptable ranges for slow-blow fuse operation
Inventory availability and lead time requirements
Supplier preference and procurement agreements

The Littelfuse 02153.15HXP, 02153.15MXP, and 02153.15TXP variants are functionally identical ceramic fuse cartridges with higher melting I²t values (43.255), providing enhanced thermal stability. The Bel Fuse 5HT 3.15-R offers the lowest melting I²t (31) with comprehensive international certifications. The Eaton S505 series (both BK/S505-3.15-R and S505-3.15-R) provides intermediate thermal characteristics (36.6) with extensive approval agency coverage.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts be used interchangeably with the SCHURTER 2020.0009?

A: Yes. All listed substitute parts meet the mandatory electrical and mechanical specifications: 3.15A current rating, 250VAC voltage rating, slow-blow response time, 5x20mm package dimensions, and 1.5kA breaking capacity. They are direct functional equivalents.

Q: What is the significance of the different Melting I²t values?

A: Melting I²t indicates the thermal energy required to melt the fuse element. While values differ among manufacturers (ranging from 31 to 43.255), all substitutes remain within acceptable operating parameters for slow-blow fuse applications. The variation reflects different ceramic compositions and element designs while maintaining the same current rating and response time.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 compliance status, matching the environmental compliance of the original SCHURTER 2020.0009.

Q: Do these fuses require the same holder as the original part?

A: Yes. All substitute parts are cartridge fuses in 5x20mm form factor requiring a compatible fuse holder. The mechanical dimensions (0.205" diameter x 0.787" length) are standardized across all listed parts.

Q: Which substitute offers the broadest international certification coverage?

A: The Eaton S505 series (BK/S505-3.15-R and S505-3.15-R) carries the most extensive approval agency certifications, including BSI, CCC/CQC, CSA, cULus, IMQ, KC, PSE/JET, SEMKO, and VDE. This makes them suitable for applications requiring multiple regional compliance standards.

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