Equivalent & Substitute Parts for S500-63-R Glass Cartridge Fuse

Part Overview

The S500-63-R is a 63 mA, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton Electronics Division. This fuse is designed for 5mm x 20mm holder applications and requires an external fuse holder for installation. The part is currently active in production with 1063 units in stock. Alternative equivalent parts are available from Eaton and other manufacturers to support supply chain flexibility and application-specific requirements.

Key Parameters

Parameter	Value
Current Rating	63 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Fast Blow
Package / Case	5mm x 20mm
Breaking Capacity @ Rated Voltage	35 A
Mounting Type	Requires Holder
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the S500-63-R is determined by strict equivalence across the following parameters:

Current Rating: 63 mA (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Fast Blow (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Breaking Capacity @ Rated Voltage: 35 A (exact match required)

All substitute parts listed below meet these criteria. Variations in secondary parameters such as DC cold resistance, melting I²t, approval agencies, and operating temperature do not affect functional substitutability within the specified electrical and mechanical constraints.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (mA)	Voltage Rating (V AC)	Response Time	Package	Breaking Capacity (A)	Inventory (Pcs)	Product Status
S500-63-R	Eaton - Electronics Division	S500	63	250	Fast Blow	5mm x 20mm	35	1063	Active
BK/GMA-63-R	Eaton - Electronics Division	GMA	63	250	Fast Blow	5mm x 20mm	35	881	Active
BK/S500-63-R	Eaton - Electronics Division	S500	63	250	Fast Blow	5mm x 20mm	35	1017	Active
BK1/S500-63-R	Eaton - Electronics Division	S500	63	250	Fast Blow	5mm x 20mm	35	925	Active
GDB-63MA	Eaton - Electronics Division	GDB	63	250	Fast Blow	5mm x 20mm	35	1108	Active
0217.063MXP	Littelfuse Inc.	217	63	250	Fast Blow	5mm x 20mm	35	4632	Active
0034.1530	SCHURTER Inc.	FSF 5x20	63	250	Fast Blow	5mm x 20mm	35	2249	Active
0217.063HXP	Littelfuse Inc.	217	63	250	Fast Blow	5mm x 20mm	35	1164	Active

Engineering Selection Recommendations

All substitute parts listed are active products with confirmed inventory availability. Selection among equivalent parts should be based on the following factors:

Eaton Electronics Division Parts (S500-63-R, BK/GMA-63-R, BK/S500-63-R, BK1/S500-63-R, GDB-63MA): These parts maintain design continuity within the Eaton product family. The BK/GMA-63-R variant includes CSA, PSE, and UL approval agencies. All Eaton variants are ROHS3 compliant.

Littelfuse Inc. Parts (0217.063MXP, 0217.063HXP): Both Littelfuse variants carry comprehensive approval certifications including CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE. Operating temperature range is specified as -55°C to 125°C. Inventory availability is highest among all substitutes (4632 units for 0217.063MXP).

SCHURTER Inc. Part (0034.1530): This variant includes CCC, cURus, and VDE approvals with operating temperature range -55°C to 125°C. Inventory level is 2249 units.

All parts are ROHS3 compliant and carry EAR99 ECCN classification with identical HTSUS code 8536.10.0020.

Frequently Asked Questions (FAQ)

Q: Can I substitute S500-63-R with any of the listed parts without circuit modification?

A: Yes. All listed parts are parametrically equivalent across current rating (63 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (5mm x 20mm), and breaking capacity (35 A). No circuit modification is required.

Q: What is the difference between the Eaton S500 series variants (S500-63-R, BK/S500-63-R, BK1/S500-63-R)?

A: These parts share identical electrical and mechanical specifications. Differences exist in DC cold resistance (125 Ohms for S500-63-R and BK/S500-63-R; 12.5 Ohms for BK1/S500-63-R) and approval agency documentation. All are functionally equivalent for circuit protection applications.

Q: Why does BK/GMA-63-R have different melting I²t and DC cold resistance values?

A: Melting I²t (0.00024) and DC cold resistance (15.75 Ohms) are secondary thermal and electrical characteristics that do not affect substitutability. The part maintains the same current rating, voltage rating, response time, and breaking capacity as the main part.

Q: Which substitute has the broadest approval certifications?

A: Both Littelfuse variants (0217.063MXP and 0217.063HXP) carry the most comprehensive approval agency list: CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE. These certifications support global market applications.

Q: Are there operating temperature constraints I should consider?

A: The main part S500-63-R does not specify an operating temperature range. Littelfuse (0217.063MXP, 0217.063HXP) and SCHURTER (0034.1530) variants specify -55°C to 125°C. If your application requires operation outside standard ambient conditions, these variants with specified temperature ranges are available.

Q: What is the highest inventory availability among all substitutes?

A: Littelfuse 0217.063MXP has the highest inventory with 4632 units in stock, followed by SCHURTER 0034.1530 with 2249 units.

Q: Do all parts require the same fuse holder?

A: Yes. All parts use the 5mm x 20mm package format and require a compatible 5mm x 20mm fuse holder. No holder modification is necessary when substituting between any of these parts.

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