BK/SC-35 Equivalent & Substitute Parts

Part Overview

The BK/SC-35 is a ceramic cartridge fuse manufactured by Eaton - Bussmann Electrical Division, rated for 35 A at 480 V AC and 300 V DC. This slow-blow fuse is designed for applications requiring a non-standard cartridge holder and provides a breaking capacity of 100 kA AC and 10 kA DC. The part is currently active in production with full compliance to CE, CSA, and UL standards. Identifying equivalent substitute parts ensures continuity of supply and maintains system reliability when the primary part becomes unavailable.

Substiute Parts

BK/SC-35

Eaton - Bussmann Electrical DivisionIn Stock: 1138BK/SC-35 Datasheet

Current PartRFQ

SC-35

Eaton - Bussmann Electrical DivisionIn Stock: 851SC-35 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/SC-35 are determined by strict equivalence across the following critical parameters:

• Current Rating: 35 A
• Voltage Rating - AC: 480 V
• Voltage Rating - DC: 300 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Breaking Capacity: 100 kA AC, 10 kA DC
• Physical Dimensions: 0.410" Dia x 2.250" L
• Approval Certifications: CE, CSA, UL

Only parts matching all these parameters across electrical and mechanical specifications are classified as direct equivalents. The SC series designation and non-standard cartridge holder requirement are maintained across all substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both the BK/SC-35 and SC-35 are active products from Eaton - Bussmann Electrical Division with identical electrical and mechanical specifications. Selection between these parts should be based on availability and inventory status. Both parts carry full compliance with CE, CSA, and UL certifications, ensuring regulatory acceptance in their respective markets. The SC-35 substitute maintains the same breaking capacity, voltage ratings, and physical form factor, making it a direct functional equivalent for 35 A ceramic cartridge fuse applications at 480 V AC / 300 V DC.

Frequently Asked Questions (FAQ)

Q: Can the SC-35 be used as a direct replacement for the BK/SC-35?

A: Yes. Both parts are identical in electrical ratings (35 A, 480 V AC, 300 V DC), fuse type (ceramic cartridge), response time (slow blow), breaking capacity (100 kA AC, 10 kA DC), physical dimensions (0.410" Dia x 2.250" L), and regulatory certifications (CE, CSA, UL). They are parametric equivalents.

Q: What determines if a fuse can substitute for the BK/SC-35?

A: A substitute must match all critical parameters: 35 A current rating, 480 V AC and 300 V DC voltage ratings, ceramic cartridge construction, slow-blow response, 100 kA AC / 10 kA DC breaking capacity, non-standard cartridge dimensions, and CE, CSA, UL approvals.

Q: Are there any differences in holder compatibility?

A: Both the BK/SC-35 and SC-35 require a non-standard cartridge holder. Verify that your existing holder is compatible with the 0.410" diameter and 2.250" length specifications before installation.

Q: What is the significance of the slow-blow response time?

A: Slow-blow fuses are designed to tolerate temporary inrush currents without nuisance tripping, making them suitable for inductive loads and motor circuits. This characteristic must be maintained when selecting a substitute.

Q: Are both parts RoHS compliant?

A: Yes. Both the BK/SC-35 and SC-35 are RoHS compliant, meeting environmental and material restriction requirements for regulated markets.