Equivalent & Substitute Parts for BK/ABC-V-18-R

Part Overview

The BK/ABC-V-18-R is an 18 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This through-hole mounted component is designed for fast-blow response characteristics and is certified by CSA and UL approval agencies. The part is currently active in production status with 714 pieces available in inventory. Identifying equivalent and substitute parts is necessary to ensure supply chain continuity, evaluate alternative sourcing options, and maintain design flexibility across manufacturing environments.

Substiute Parts

BK/ABC-V-18-R

Eaton - Electronics DivisionIn Stock: 737BK/ABC-V-18-R Datasheet

Current PartRFQ

ABC-V-18-R

Eaton - Electronics DivisionIn Stock: 1115ABC-V-18-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/ABC-V-18-R ceramic cartridge fuse is determined by strict equivalence across the following critical parameters:

Current Rating: 18 A (exact match required)

Voltage Ratings: 250 V AC and 125 V DC (both must be met or exceeded)

Fuse Type: Cartridge, Ceramic (mechanical and electrical characteristics specific to ceramic construction)

Response Time: Fast Blow (determines circuit protection behavior)

Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (physical form factor and mounting compatibility)

Mounting Type: Through Hole (determines PCB or chassis integration method)

Breaking Capacity: 400 A @ Rated Voltage (fault current handling capability)

Melting I²t: 400 (thermal energy dissipation characteristic)

DC Cold Resistance: 0.00465 Ohms (electrical performance under DC conditions)

Approval Certifications: CSA, UL (regulatory compliance requirement)

RoHS Compliance: ROHS3 Compliant (environmental and material restriction adherence)

Substitute parts must match all parameters listed above to ensure functional and regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

The ABC-V-18-R is a parametric equivalent to the BK/ABC-V-18-R. Both parts are manufactured by Eaton - Electronics Division and share identical electrical, mechanical, and regulatory characteristics. Both components maintain active product status and carry CSA and UL certifications, confirming compliance with applicable safety and performance standards. Both parts are ROHS3 compliant, meeting environmental material restriction requirements.

Selection between these parts is based on inventory availability and supply chain requirements. The ABC-V-18-R substitute offers higher inventory availability at 1063 pieces compared to 714 pieces for the main part number. Both parts are suitable for direct substitution in applications requiring 18 A ceramic cartridge fuses with 250 V AC and 125 V DC ratings, fast-blow response, and through-hole mounting in 3AB/3AG form factor.

Frequently Asked Questions (FAQ)

Q: Can the ABC-V-18-R be used as a direct replacement for the BK/ABC-V-18-R?

A: Yes. The ABC-V-18-R is a parametric equivalent with identical current rating, voltage ratings, fuse type, response time, package form factor, mounting type, breaking capacity, melting I²t, DC cold resistance, physical dimensions, and regulatory certifications. Direct substitution is supported.

Q: Are there any differences in physical dimensions between these parts?

A: No. Both parts share identical physical dimensions of 0.266" diameter by 1.292" length (6.76mm x 32.82mm). Both use the 3AB, 3AG, 1/4" x 1-1/4" (Axial) package form factor and are compatible with identical through-hole mounting applications.

Q: Do both parts meet the same regulatory certifications?

A: Yes. Both the BK/ABC-V-18-R and ABC-V-18-R carry CSA and UL approvals and are ROHS3 compliant. Regulatory compliance is equivalent across both part numbers.

Q: What is the significance of the current rating of 18 A?

A: The 18 A current rating specifies the nominal fuse trip threshold. This rating must be matched exactly in substitution applications to maintain proper circuit protection characteristics. Both parts are rated for 18 A operation.

Q: How do the voltage ratings affect substitution?

A: The voltage ratings of 250 V AC and 125 V DC define the maximum operating voltages for the fuse. Both parts are rated identically and must be used in circuits operating at or below these voltage levels. Substitution requires matching both AC and DC voltage ratings.

Q: What does "Fast Blow" response time mean?

A: Fast Blow indicates the fuse responds quickly to overcurrent conditions, providing rapid circuit interruption. Both parts share this response characteristic, ensuring equivalent protection behavior in the circuit.

Q: Is the breaking capacity of 400 A important for substitution?

A: Yes. The breaking capacity of 400 A specifies the maximum fault current the fuse can safely interrupt at rated voltage. Both parts are rated identically at 400 A, ensuring equivalent fault current handling capability.

Q: What is the melting I²t value and why does it matter?

A: The melting I²t of 400 represents the thermal energy required to melt the fuse element. This parameter determines the fuse's response to transient overcurrent conditions. Both parts share identical melting I²t values, ensuring equivalent thermal response characteristics.

Q: Does the DC cold resistance affect circuit performance?

A: Yes. The DC cold resistance of 0.00465 Ohms represents the fuse's electrical resistance under DC conditions. This parameter affects voltage drop and power dissipation in the circuit. Both parts are identical at 0.00465 Ohms, ensuring equivalent electrical performance.

Q: Are there inventory considerations for part selection?

A: The ABC-V-18-R substitute offers higher inventory availability at 1063 pieces compared to 714 pieces for the BK/ABC-V-18-R. Inventory levels may influence sourcing decisions based on project timelines and supply requirements.