S500-8-R Glass Cartridge Fuse 8A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The S500-8-R is an 8 A, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component requires a fuse holder for installation and operates within a 5mm x 20mm form factor. The part maintains active product status with 674 units in current inventory stock.

Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response characteristics, and approval certifications. Alternative components serve identical circuit protection functions where specifications align with the original part parameters.

Substiute Parts

S500-8-R

Eaton - Electronics DivisionIn Stock: 714S500-8-R Datasheet

Current PartRFQ

BK/GDB-8A

Eaton - Electronics DivisionIn Stock: 815BK/GDB-8A Datasheet

Parametric EquivalentRFQ

BK/S500-8-R

Eaton - Electronics DivisionIn Stock: 1097BK/S500-8-R Datasheet

Parametric EquivalentRFQ

BK1/S500-8-R

Eaton - Electronics DivisionIn Stock: 2503BK1/S500-8-R Datasheet

Parametric EquivalentRFQ

0217008.MXP

Littelfuse Inc.In Stock: 41200217008.MXP Datasheet

DirectRFQ

0034.1525

SCHURTER Inc.In Stock: 60270034.1525 Datasheet

Parametric EquivalentRFQ

0217008.HXP

Littelfuse Inc.In Stock: 26090217008.HXP Datasheet

Parametric EquivalentRFQ

0617008.MXP

Littelfuse Inc.In Stock: 27710617008.MXP Datasheet

Parametric EquivalentRFQ

FSC-8A

OptiFuseIn Stock: 7473FSC-8A Datasheet

Parametric EquivalentRFQ

FSD-8A

OptiFuseIn Stock: 1224FSD-8A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Parameters:

• Current Rating: 8 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Glass
• Response Time: Fast Blow
• Package / Case: 5mm x 20mm
• Breaking Capacity @ Rated Voltage: 80A minimum

Secondary Compatibility Factors:

• Mounting Type: Requires Holder
• RoHS Compliance Status
• Approval Agency Certifications

Parts are grouped into two categories: Eaton-manufactured equivalents within the S500 and GDB series, and cross-manufacturer alternatives from Littelfuse Inc., SCHURTER Inc., and OptiFuse that meet all primary electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Eaton S500 Series (Primary Equivalents): BK/S500-8-R and BK1/S500-8-R are direct series equivalents with identical electrical specifications and higher inventory availability (1087 and 2422 units respectively). Both maintain ROHS3 compliance and BSI, CSA, cULus, SEMKO, and VDE certifications. These parts are recommended for direct replacement where Eaton component continuity is required.

Eaton GDB Series (Alternative Equivalent): BK/GDB-8A provides functional equivalence with matching electrical parameters. This part carries UL and VDE certifications with 707 units in stock. Selection of this variant depends on design documentation requirements for the GDB series designation.

Littelfuse 217 Series (Cross-Manufacturer Equivalent): 0217008.MXP and 0217008.HXP both meet all primary electrical and mechanical parameters with 4067 and 2589 units available respectively. These parts carry comprehensive international certifications including BSI, CE, CCC, CSA, KC, PSE, SEMKO, UR, and VDE. Operating temperature range extends to -55°C to 125°C.

Littelfuse 617 Series (Cross-Manufacturer Equivalent): 0617008.MXP matches all primary specifications with 2746 units in inventory. Certifications include CE, UR, and VDE. Operating temperature range is -55°C to 125°C.

SCHURTER FSF 5x20 Series (Cross-Manufacturer Equivalent): 0034.1525 meets all primary electrical and mechanical requirements with the highest inventory level at 5919 units. Certifications include cURus, PSE/JET, and VDE. Operating temperature range is -55°C to 125°C.

OptiFuse FSC Series (Alternative with Higher Breaking Capacity): FSC-8A provides 200A breaking capacity versus the 80A specification of the main part. This higher breaking capacity does not prevent substitution where circuit design permits. Certifications include cULus and UL 248. Operating temperature range is -55°C to 90°C.

OptiFuse FSD Series (Alternative with Lower Breaking Capacity): FSD-8A provides 35A breaking capacity, which is lower than the 80A specification. This part carries cURus and IEC 60127 certifications with operating temperature range of -55°C to 125°C. Selection requires confirmation that circuit protection requirements do not mandate the higher breaking capacity.

Frequently Asked Questions (FAQ)

Q: Can BK/S500-8-R be used as a direct replacement for S500-8-R?

A: Yes. BK/S500-8-R is a parametric equivalent within the same S500 series manufactured by Eaton. Both parts share identical current rating (8 A), voltage rating (250 V AC), response time (Fast Blow), package dimensions (5x20mm), breaking capacity (80A), and RoHS3 compliance status. The primary difference is higher inventory availability (1087 units versus 674 units).

Q: What is the difference between Eaton and Littelfuse equivalents?

A: Eaton equivalents (S500, GDB series) and Littelfuse equivalents (217, 617 series) meet identical electrical specifications and mechanical dimensions. Littelfuse parts offer extended operating temperature ranges (-55°C to 125°C versus unspecified for Eaton) and broader international certification coverage. Selection depends on design documentation requirements and supply chain preferences.

Q: Can OptiFuse FSC-8A be substituted for S500-8-R?

A: FSC-8A meets all primary electrical and mechanical parameters including 8 A current rating, 250 V AC voltage rating, fast-blow response, and 5x20mm package. The breaking capacity is 200A versus 80A for the S500-8-R. Substitution is permissible where circuit design does not require the specific 80A breaking capacity specification. Operating temperature range is -55°C to 90°C.

Q: Can OptiFuse FSD-8A be substituted for S500-8-R?

A: FSD-8A meets all primary electrical and mechanical parameters. The breaking capacity is 35A versus 80A for the S500-8-R. Substitution requires confirmation that the lower breaking capacity is acceptable for the circuit protection application. Operating temperature range is -55°C to 125°C.

Q: What certifications are required for my application?

A: The S500-8-R carries BSI, CSA, cURus, SEMKO, and VDE certifications. Littelfuse 217 and 617 series parts carry broader certification coverage including CE, CCC, KC, PSE, and UR in addition to BSI, CSA, SEMKO, and VDE. SCHURTER 0034.1525 carries cURus, PSE/JET, and VDE certifications. OptiFuse parts carry cULus/UL 248 (FSC) or cURus/IEC 60127 (FSD) certifications. Select the substitute part whose certification profile matches application requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance status, matching the compliance level of the S500-8-R main part.

Q: What is the significance of DC Cold Resistance values?

A: DC Cold Resistance is provided for reference in electrical circuit analysis. The S500-8-R specifies 0.01 Ohms. Littelfuse 217 and 617 series parts specify 0.0068 Ohms. OptiFuse FSC-8A specifies 100 Ohms. These variations reflect different fuse element designs and do not prevent substitution where electrical circuit parameters accommodate the specified resistance value.

Q: Can I mix different manufacturers in the same circuit or application?

A: All listed substitute parts meet identical electrical ratings, mechanical dimensions, and response characteristics. Mixing manufacturers within a single application is permissible from an electrical standpoint. Design documentation and procurement specifications should be reviewed to confirm no single-source or manufacturer-specific requirements exist.

Q: What inventory levels should I consider for procurement?

A: Current inventory levels are: S500-8-R (674 units), BK/GDB-8A (707 units), BK/S500-8-R (1087 units), BK1/S500-8-R (2422 units), 0217008.MXP (4067 units), 0034.1525 (5919 units), 0217008.HXP (2589 units), 0617008.MXP (2746 units), FSC-8A (7399 units), and FSD-8A (1117 units). Higher inventory levels may indicate better supply chain availability for long-term procurement planning.