GDA-4A Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GDA-4A is a 4 A, 250 V AC/DC ceramic cartridge fuse manufactured by Eaton - Electronics Division. This fast-blow fuse is designed for 5mm x 20mm holder applications and requires an external fuse holder for installation. The part maintains Active product status with 1147 pieces in current inventory. 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	4 A
Voltage Rating - AC	250 V
Fuse Type	Cartridge, Ceramic
Response Time	Fast Blow
Package / Case	5mm x 20mm
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	1.5kA
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)

Substitute Part Grouping Explanation

Substitution eligibility for the GDA-4A is determined by strict equivalence across the following parameters:

Primary Matching Criteria:

Current Rating: 4 A (exact match required)
Voltage Rating - AC: 250 V (exact match required)
Package / Case: 5mm x 20mm (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Response Time: Fast Blow (exact match required)
Mounting Type: Requires Holder (exact match required)

Secondary Compatibility Factors:

Breaking Capacity @ Rated Voltage: 1.5kA (preferred match)
Melting I²t: 12.6 to 14.995 (acceptable range for fast-blow ceramic fuses)
DC Cold Resistance: 0.0247 to 0.027 Ohms (acceptable range)
Approval Agencies: CCC, CSA, VDE certifications (minimum baseline)

All identified substitute parts match the primary criteria exactly. Variations in melting I²t and DC cold resistance remain within acceptable engineering tolerances for ceramic cartridge fuses of this specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (A)	Voltage Rating - AC (V)	Package / Case	Response Time	Breaking Capacity @ Rated Voltage	Melting I²t	DC Cold Resistance (Ohms)	Inventory (Pcs)	Product Status
GDA-4A	Eaton - Electronics Division	4	250	5mm x 20mm	Fast Blow	1.5kA	14	0.027	1147	Active
BK/GDA-4A	Eaton - Electronics Division	4	250	5mm x 20mm	Fast Blow	1.5kA	14	0.027	2000	Active
BK/S501-4-R	Eaton - Electronics Division	4	250	5mm x 20mm	Fast Blow	1.5kA	14	0.027	1634	Active
BK1/S501-4-R	Eaton - Electronics Division	4	250	5mm x 20mm	Fast Blow	1.5kA	14	0.027	1503	Active
0001.1010	SCHURTER Inc.	4	250	5mm x 20mm	Fast Blow	1.5kA	12.6	—	1189	Active
0216004.HXP	Littelfuse Inc.	4	250	5mm x 20mm	Fast Blow	1.5kA	14.995	0.0247	1545	Active
0216004.MXP	Littelfuse Inc.	4	250	5mm x 20mm	Fast Blow	1.5kA	14.995	0.0247	1670	Active
0216004.VXP	Littelfuse Inc.	4	250	5mm x 20mm	Fast Blow	1.5kA	14.995	0.0247	861	Active
FCC-4A	OptiFuse	4	250	5mm x 20mm	Fast Blow	200A	13.683	0.0275	813	Active
FCD-4A	OptiFuse	4	250	5mm x 20mm	Fast Blow	1.5kA	12.22	—	2208	Active

Engineering Selection Recommendations

Eaton - Electronics Division Series (BK/GDA-4A, BK/S501-4-R, BK1/S501-4-R): All three Eaton variants maintain identical electrical and mechanical specifications to the GDA-4A. BK/GDA-4A offers the highest current inventory (2000 pcs) and is the direct series equivalent. BK/S501-4-R and BK1/S501-4-R represent alternative Eaton series designations with equivalent performance. All three carry Active product status and support CCC, CSA, and SEMKO certifications.

SCHURTER Inc. 0001.1010: This part matches all primary criteria with melting I²t of 12.6 (within acceptable tolerance). Operating temperature range is specified as -55°C to 125°C. Certifications include CCC, cURus, KC, PSE/JET, and VDE. Inventory availability is 1189 pcs.

Littelfuse Inc. Series (0216004.HXP, 0216004.MXP, 0216004.VXP): All three Littelfuse variants provide identical electrical performance with melting I²t of 14.995 and DC cold resistance of 0.0247 Ohms. Operating temperature range is -55°C to 125°C. Certifications include CCC, CE, CSA, KC, PSE, SEMKO, UL, and VDE. Inventory levels: 0216004.HXP (1545 pcs), 0216004.MXP (1670 pcs), 0216004.VXP (861 pcs).

OptiFuse FCC-4A: Meets all primary electrical and mechanical criteria. Breaking capacity is specified as 200A (lower than 1.5kA standard). Melting I²t is 13.683. Certifications include cULus and UL 248. Inventory is 813 pcs.

OptiFuse FCD-4A: Meets all primary criteria with explicit 250 V DC voltage rating. Melting I²t is 12.22. Certifications include IEC 60127. Highest inventory availability at 2208 pcs. Suitable for applications requiring dual AC/DC voltage specification.

Frequently Asked Questions (FAQ)

Q: Can I substitute GDA-4A with any of these parts directly?

A: Yes. All listed substitute parts match the GDA-4A across current rating (4 A), AC voltage rating (250 V), package dimensions (5mm x 20mm), fuse type (ceramic cartridge), response time (fast blow), and mounting requirement (holder). Direct substitution is supported without circuit modification.

Q: What is the difference between melting I²t values across these parts?

A: Melting I²t represents the thermal energy required to melt the fuse element. The GDA-4A specifies 14; substitutes range from 12.22 to 14.995. These variations remain within acceptable engineering tolerance for fast-blow ceramic fuses and do not affect functional interchangeability in standard circuit protection applications.

Q: Are there differences in approval certifications?

A: Yes. The GDA-4A carries CCC, CSA, IMQ, SEMKO, and UR certifications. Littelfuse variants add CE and UL certifications. OptiFuse FCC-4A is certified to UL 248. OptiFuse FCD-4A references IEC 60127. SCHURTER 0001.1010 includes KC and PSE/JET certifications. Select the substitute based on your application's required certification standard.

Q: What is the significance of DC cold resistance values?

A: DC cold resistance (0.0247 to 0.027 Ohms) indicates the fuse element's resistance at room temperature. Variations within this range do not affect circuit protection performance or switching characteristics. All listed parts fall within acceptable tolerance.

Q: Does operating temperature range affect substitution?

A: The GDA-4A does not specify an operating temperature range. Substitute parts from SCHURTER, Littelfuse, and OptiFuse specify -55°C to 125°C. If your application operates within this range, these parts are fully compatible. For applications outside this range, consult the GDA-4A's environmental specifications.

Q: Which substitute has the highest inventory availability?

A: OptiFuse FCD-4A offers the highest inventory at 2208 pcs. Eaton BK/GDA-4A provides 2000 pcs. Littelfuse 0216004.MXP provides 1670 pcs. Inventory levels are subject to change; verify current availability with your supplier.

Q: Can I use FCD-4A if my circuit requires 250 V DC protection?

A: Yes. FCD-4A explicitly specifies 250 V DC voltage rating in addition to 250 V AC. This makes it suitable for applications requiring dual AC/DC protection. Other substitutes are rated for AC; verify DC requirements before selection.

Q: What is the breaking capacity and why does it vary?

A: Breaking capacity is the maximum current the fuse can safely interrupt. The GDA-4A and most substitutes specify 1.5kA. OptiFuse FCC-4A specifies 200A. For standard circuit protection applications, 1.5kA is the industry standard. Select FCC-4A only if your application specifically requires 200A breaking capacity.

Q: Are all these parts RoHS3 compliant?

A: Most substitutes are RoHS3 compliant. The GDA-4A does not specify RoHS status. Littelfuse, OptiFuse, and Eaton BK variants confirm ROHS3 compliance. SCHURTER 0001.1010 confirms ROHS3 compliance. Verify RoHS compliance requirements for your application before final selection.

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