BK/C515-7-R Equivalent & Substitute Parts

Part Overview

The BK/C515-7-R is a 7A 125VAC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This through-hole component is rated for 125V AC operation with a 2AG package form factor (5mm x 15mm axial). The part is currently active in production with 1,088 units in stock. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct replacement in circuit designs without functional compromise.

Substiute Parts

BK/C515-7-R

Eaton - Electronics DivisionIn Stock: 1126BK/C515-7-R Datasheet

Current PartRFQ

0230007.HXP

LittelfuseIn Stock: 10190230007.HXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/C515-7-R is determined by strict alignment of the following parameters:

Mandatory Matching Criteria:

• Current Rating: 7 A (exact match required)
• Voltage Rating - AC: 125 V (minimum; higher ratings acceptable)
• Fuse Type: Cartridge, Glass (mechanical and electrical behavior)
• Response Time: Slow Blow (circuit protection characteristic)
• Mounting Type: Through Hole (assembly compatibility)
• Breaking Capacity @ Rated Voltage: 400 A (fault interruption requirement)
• Approval Agencies: CSA and/or UL certification (regulatory compliance)
• RoHS Status: ROHS3 Compliant (material restriction compliance)

Acceptable Variation Parameters:

• Package / Case: Axial cartridge form factors with compatible physical dimensions
• DC Voltage Rating: May be present in substitute parts without affecting AC-rated applications
• Operating Temperature Range: Wider ranges in substitutes do not compromise functionality
• DC Cold Resistance: Minor variations within 0.01 Ohms acceptable
• Melting I²t: Variations acceptable if breaking capacity is maintained

The substitute part 0230007.HXP (Littelfuse 230 series) meets all mandatory criteria and is therefore a valid equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: BK/C515-7-R (Eaton)

The original BK/C515-7-R remains the preferred choice when available. It carries active product status with 1,088 units in current inventory. Eaton's C515 series fuses are established in high-volume production environments and carry dual CSA and UL approvals. ROHS3 compliance and EAR99 export classification support global supply chain requirements.

Approved Substitute: 0230007.HXP (Littelfuse)

The Littelfuse 0230007.HXP is a qualified equivalent with 942 units in stock. This substitute meets all mandatory electrical parameters: 7A current rating, 125V AC voltage rating, slow-blow response, 400A breaking capacity, and cartridge glass construction. Both CSA and UL certifications are present, with additional CE and PSE approvals. ROHS3 compliance is confirmed.

Dimensional Compatibility Note:

The 0230007.HXP exhibits minor dimensional variation (4.50mm diameter vs. 5.50mm, and 14.50mm length vs. 15.20mm). Physical fit must be verified against the specific fuse holder or socket used in the target application. Axial through-hole mounting is confirmed for both parts.

Compliance Verification:

Both parts satisfy ROHS3 material restrictions and REACH unaffected status. Export classification (EAR99 / HTSUS 8536.10.0020) is identical. No additional regulatory barriers exist for substitution in standard industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the 0230007.HXP replace the BK/C515-7-R in all applications?

A: The 0230007.HXP is electrically and functionally equivalent for 7A 125VAC slow-blow protection. Physical fit must be confirmed with the specific fuse holder. The substitute carries identical breaking capacity (400A) and approval certifications (CSA, UL). No functional compromise exists for circuit protection performance.

Q: What is the significance of the "Slow Blow" response time?

A: Slow-blow fuses tolerate temporary inrush currents without nuisance opening, making them suitable for circuits with motor startup or transformer energization transients. Both the BK/C515-7-R and 0230007.HXP share this characteristic, ensuring equivalent circuit behavior.

Q: Does the DC voltage rating on the 0230007.HXP affect AC-only applications?

A: No. The presence of a 125V DC rating on the Littelfuse part does not impact AC operation. The 125V AC rating is the controlling specification for AC circuits. The additional DC rating provides design flexibility for dual-voltage applications without compromising AC performance.

Q: Are there dimensional concerns with the 0230007.HXP?

A: The Littelfuse part is slightly smaller (4.50mm diameter vs. 5.50mm, 14.50mm length vs. 15.20mm). Verify physical fit within the target fuse holder or socket before deployment. Both parts are axial through-hole cartridges and fit standard 2AG-compatible holders in most applications.

Q: What is the difference in melting I²t between the two parts?

A: The BK/C515-7-R has a melting I²t of 710.5, while the 0230007.HXP is 464. Both parts maintain the same 400A breaking capacity at rated voltage. This variation reflects different internal element designs but does not affect the 7A current rating or slow-blow response characteristic. Both are acceptable for equivalent circuit protection.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the BK/C515-7-R and 0230007.HXP are ROHS3 compliant with REACH unaffected status. No material restriction concerns exist for either part in regulated markets.

Q: What certifications are required for my application?

A: Both parts carry CSA and UL certifications, which are the primary North American regulatory requirements. The 0230007.HXP additionally carries CE and PSE approvals for European and Japanese markets. Verify your specific regional requirements before final selection.