GDC-32MA Equivalent & Substitute Parts

Part Overview

The GDC-32MA is a 32 mA, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component is designed for circuit protection in applications requiring a 5mm x 20mm form factor with holder mounting. The part maintains active product status with 753 units in current inventory.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity. Alternative components listed below satisfy identical electrical and mechanical specifications, enabling direct replacement within compatible fuse holder assemblies.

Key Parameters

Parameter	Value
Current Rating	32 mA
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	35 A
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)

Substitute Part Grouping Explanation

Substitution eligibility for the GDC-32MA is determined by strict equivalence across the following parameters:

Primary Substitution Criteria:

Current Rating: 32 mA (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Slow 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 and are therefore electrically and mechanically interchangeable with the GDC-32MA within applications utilizing standard 5mm x 20mm fuse holders.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Current Rating (mA)	Voltage Rating (AC)	Fuse Type	Response Time	Package / Case	Breaking Capacity @ Rated Voltage	Inventory (Pcs)	Product Status
GDC-32MA	Eaton - Electronics Division	32	250 V	Cartridge, Glass	Slow Blow	5mm x 20mm	35 A	753	Active
BK/S506-32-R	Eaton - Electronics Division	32	250 V	Cartridge, Glass	Slow Blow	5mm x 20mm	35 A	1826	Active
BK1/S506-32-R	Eaton - Electronics Division	32	250 V	Cartridge, Glass	Slow Blow	5mm x 20mm	35 A	1489	Active
0218.032MXP	Littelfuse Inc.	32	250 V	Cartridge, Glass	Slow Blow	5mm x 20mm	35 A	1620	Active
0218.032TXP	Littelfuse Inc.	32	250 V	Cartridge, Glass	Slow Blow	5mm x 20mm	35 A	1196	Active

Engineering Selection Recommendations

All substitute parts listed maintain active product status and are suitable for direct replacement applications. Selection among equivalent options is based on availability, certification requirements, and supply chain considerations.

Eaton - Electronics Division Substitutes (BK/S506-32-R, BK1/S506-32-R): These parts carry certifications from BSI, CCC, IMQ, SEMKO, UL, and VDE. Both are ROHS3 compliant and REACH unaffected. BK/S506-32-R offers the highest current inventory at 1826 units.

Littelfuse Inc. Substitutes (0218.032MXP, 0218.032TXP): These parts carry certifications from CCC, CE, CSA, SEMKO, UL, and VDE. Both are ROHS3 compliant and REACH unaffected. Operating temperature range is specified as -55°C to 125°C. 0218.032MXP provides 1620 units in inventory; 0218.032TXP provides 1196 units.

All parts are approved for use in applications requiring 32 mA, 250 V AC/DC protection with slow-blow response characteristics in 5mm x 20mm form factors.

Frequently Asked Questions (FAQ)

Q: Can BK/S506-32-R be used as a direct replacement for GDC-32MA?

A: Yes. BK/S506-32-R meets all electrical and mechanical specifications: 32 mA current rating, 250 V AC voltage rating, slow-blow response, 5mm x 20mm package, and 35 A breaking capacity. Both require standard fuse holders and are mechanically and electrically interchangeable.

Q: What is the difference between Eaton and Littelfuse substitute options?

A: Both manufacturers provide equivalent parts meeting identical electrical specifications. Eaton substitutes (BK/S506-32-R, BK1/S506-32-R) carry certifications from BSI, CCC, IMQ, SEMKO, UL, and VDE. Littelfuse substitutes (0218.032MXP, 0218.032TXP) carry certifications from CCC, CE, CSA, SEMKO, UL, and VDE. Littelfuse parts specify an operating temperature range of -55°C to 125°C. Selection depends on certification requirements for the target application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (BK/S506-32-R, BK1/S506-32-R, 0218.032MXP, 0218.032TXP) are ROHS3 compliant and REACH unaffected.

Q: What is the significance of the 5mm x 20mm package specification?

A: The 5mm x 20mm dimension is the physical form factor of the cartridge fuse. This specification ensures mechanical compatibility with standard 5mm x 20mm fuse holders. All substitute parts share this identical package specification with the GDC-32MA.

Q: Can I use a substitute part with a different current rating?

A: No. Substitution requires exact current rating equivalence. The GDC-32MA is rated at 32 mA. Only parts with identical 32 mA ratings are electrically equivalent and suitable for replacement.

Q: What does "slow blow" response time mean in the context of these fuses?

A: Slow-blow fuses are designed to tolerate temporary current surges without opening, responding only to sustained overcurrent conditions. All listed parts share this slow-blow characteristic, ensuring consistent protection behavior across equivalent options.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. Current inventory levels vary: GDC-32MA (753 units), BK/S506-32-R (1826 units), BK1/S506-32-R (1489 units), 0218.032MXP (1620 units), and 0218.032TXP (1196 units). Availability may influence procurement decisions for high-volume applications.

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