GMA-63-R Equivalent & Substitute Parts Reference

Part Overview

The GMA-63-R is a 63 mA fast-blow glass cartridge fuse rated for 250 V AC/DC operation in a 5mm x 20mm form factor. Manufactured by Eaton - Electronics Division, this component is classified as Active product status and requires a fuse holder for installation. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and approval certifications to ensure direct functional interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Current Rating	63 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Fast Blow
Breaking Capacity @ Rated Voltage	35A
Mounting Type	Requires Holder
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)

Substitute Part Grouping Explanation

Substitute parts for the GMA-63-R are qualified based on the following mandatory parameters:

Electrical Equivalence:

Current Rating: 63 mA (exact match required)
Voltage Rating: 250 V AC (exact match required)
Response Time: Fast Blow (exact match required)
Breaking Capacity: 35A (exact match required)

Mechanical Equivalence:

Package / Case: 5mm x 20mm (exact match required)
Mounting Type: Requires Holder (exact match required)
Fuse Type: Cartridge, Glass (exact match required)

Functional Parameters:

Melting I²t: Allowable range 0.00024 to 0.00057
DC Cold Resistance: Allowable range 10.45 to 125 Ohms

All substitute parts listed maintain these core parameters. Variations in secondary characteristics such as DC cold resistance and melting I²t are within acceptable engineering tolerances for this product category.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating (mA)	Voltage (V AC)	Package	Response Time	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ohms)	RoHS Status	Inventory (Pcs)
GMA-63-R	Eaton - Electronics Division	GMA	63	250	5x20mm	Fast Blow	35	0.00024	15.75	RoHS Compliant	1054
BK/GMA-63-R	Eaton - Electronics Division	GMA	63	250	5x20mm	Fast Blow	35	0.00024	15.75	ROHS3 Compliant	881
BK/S500-63-R	Eaton - Electronics Division	S500	63	250	5x20mm	Fast Blow	35	0.00057	125	ROHS3 Compliant	1017
BK1/S500-63-R	Eaton - Electronics Division	S500	63	250	5x20mm	Fast Blow	35	0.00057	12.5	RoHS Compliant	925
GDB-63MA	Eaton - Electronics Division	GDB	63	250	5x20mm	Fast Blow	35	0.00057	12.5	RoHS Compliant	1108
0034.1530	SCHURTER Inc.	FSF 5x20	63	250	5x20mm	Fast Blow	35	0.000278	—	ROHS3 Compliant	2249
0217.063HXP	Littelfuse Inc.	217	63	250	5x20mm	Fast Blow	35	0.00056	10.45	ROHS3 Compliant	1164
0217.063MXP	Littelfuse Inc.	217	63	250	5x20mm	Fast Blow	35	0.00056	10.45	ROHS3 Compliant	4632

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Eaton - Electronics Division):

BK/GMA-63-R is the direct equivalent within the GMA series from Eaton - Electronics Division. This part maintains identical electrical and mechanical specifications to the GMA-63-R with upgraded RoHS3 compliance status. Selection of BK/GMA-63-R is appropriate for applications requiring the same series designation and performance characteristics.

Parametric Equivalents (Eaton - Electronics Division):

BK/S500-63-R, BK1/S500-63-R, and GDB-63MA are parametric equivalents from Eaton - Electronics Division. These parts satisfy all mandatory electrical and mechanical requirements. Variations in melting I²t and DC cold resistance fall within acceptable tolerances for this product category. These alternatives are suitable for applications where series designation is not a constraint.

Cross-Manufacturer Equivalents:

0034.1530 (SCHURTER Inc.) and 0217.063HXP / 0217.063MXP (Littelfuse Inc.) are parametric equivalents from alternative manufacturers. All three parts meet the core electrical ratings, mechanical dimensions, and response characteristics. SCHURTER 0034.1530 carries CCC, cURus, and VDE certifications with operating temperature range -55°C to 125°C. Littelfuse 0217.063HXP and 0217.063MXP carry comprehensive certifications including CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE with identical operating temperature range. Cross-manufacturer selection is appropriate for applications where supplier diversification or specific certification requirements are necessary.

Compliance Considerations:

All substitute parts listed are RoHS3 compliant or RoHS compliant. Littelfuse and SCHURTER parts carry REACH Unaffected status. Selection should account for specific regulatory requirements of the target application and end-use region.

Frequently Asked Questions (FAQ)

Q: Can BK/GMA-63-R be used as a direct replacement for GMA-63-R?

A: Yes. BK/GMA-63-R is a direct equivalent within the GMA series. It maintains identical current rating (63 mA), voltage rating (250 V AC), package dimensions (5mm x 20mm), response time (fast blow), and breaking capacity (35A). The primary difference is upgraded RoHS3 compliance status.

Q: What is the difference between GMA-63-R and the S500 series equivalents (BK/S500-63-R, BK1/S500-63-R)?

A: All parts share identical electrical ratings and mechanical dimensions. The S500 series variants differ in melting I²t (0.00057 versus 0.00024 for GMA-63-R) and DC cold resistance values. These differences remain within acceptable engineering tolerances for 63 mA fast-blow fuses. Series designation change does not affect functional interchangeability in circuit protection applications.

Q: Are Littelfuse 0217.063HXP and 0217.063MXP interchangeable?

A: Yes. Both Littelfuse parts are parametric equivalents with identical current rating, voltage rating, package dimensions, response time, breaking capacity, melting I²t (0.00056), and DC cold resistance (10.45 Ohms). Both carry the same comprehensive certifications and operating temperature range (-55°C to 125°C).

Q: What certifications should I verify for my application?

A: Certification requirements depend on end-use application and target market. GMA-63-R carries CSA, PSE, and UL approvals. BK/GMA-63-R carries the same certifications. Littelfuse parts (0217.063HXP, 0217.063MXP) carry CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE certifications. SCHURTER 0034.1530 carries CCC, cURus, and VDE certifications. Select the substitute part whose certification profile matches your application requirements.

Q: Does the 5mm x 20mm package dimension apply to all substitute parts?

A: Yes. All substitute parts listed maintain the 5mm x 20mm package dimension (0.205" Dia x 0.787" L). All require a fuse holder for installation. Physical interchangeability is confirmed across all listed alternatives.

Q: What is the significance of melting I²t variation among substitute parts?

A: Melting I²t characterizes the thermal energy required to melt the fuse element. Variations among the listed parts (0.00024 to 0.00057) reflect different fuse element designs while maintaining the same 63 mA current rating and fast-blow response time. All values are within acceptable engineering tolerances for this product category and do not affect functional interchangeability in standard circuit protection applications.

Q: Can I use SCHURTER 0034.1530 in place of GMA-63-R?

A: Yes. SCHURTER 0034.1530 is a parametric equivalent meeting all mandatory electrical and mechanical requirements. It carries CCC, cURus, and VDE certifications with operating temperature range -55°C to 125°C. Selection is appropriate for applications where SCHURTER certification profile and extended operating temperature range are beneficial.

Q: What inventory levels are available for each substitute part?

A: Current inventory levels are: GMA-63-R (1054 pcs), BK/GMA-63-R (881 pcs), BK/S500-63-R (1017 pcs), BK1/S500-63-R (925 pcs), GDB-63MA (1108 pcs), 0034.1530 (2249 pcs), 0217.063HXP (1164 pcs), 0217.063MXP (4632 pcs). Littelfuse 0217.063MXP maintains the highest inventory level.

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