Eaton Bussmann JCK-B-4R 130A 2.4kV nominal / 2.54kV max R-Rated R-Rated Medium Voltage Fuse
● LT: 12-16wJCK-B-4R: 130A; 2.4kV nominal / 2.54kV max; R-Rated; R-Rated Motor Protection; 50kA Sym. / 80kA Asym.
Rated Current130A
Rated Voltage2.4kV nominal / 2.54kV max
Breaking Capacity50kA Sym. / 80kA Asym.
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Part NumberJCK-B-4RBrandEaton BussmannRequested Qty
Eaton Bussmann JCK-B-4R is a r-rated medium voltage fuse rated 130A at 2.4kV nominal / 2.54kV max. Interrupting/SCCR rating: 50kA Sym. / 80kA Asym. Typical applications: Medium-voltage motor starters, Motor short-circuit protection. Source: Bussmann Full Line Catalog 1007 (2018), page 7-22.
Quick answer, specifications & FAQ
Direct answer
Eaton Bussmann Medium Voltage R-Rated Fuse JCK-B-4R is rated 130A, 2.4kV nominal / 2.54kV max. Breaking capacity 50kA Sym. / 80kA Asym.. Listed applications: Motor protection, Motor Starters. Standards: ANSI C37.46 R-Rated. JCK-B-4R: 130A; 2.4kV nominal / 2.54kV max; R-Rated; R-Rated Motor Protection; 50kA Sym. / 80kA Asym.
Key specifications
- Part number: JCK-B-4R
- Brand: Eaton Bussmann
- Rated current: 130A
- Rated voltage: 2.4kV nominal / 2.54kV max
- Breaking capacity: 50kA Sym. / 80kA Asym.
- Terminal type: Bolt-On
- Standards: ANSI C37.46 R-Rated
- Typical lead time: 12-16 weeks
- Source: Bussmann Full Line Catalog 1007 (2018), page 7-22.
Frequently asked questions
What are the current and voltage ratings of JCK-B-4R?
JCK-B-4R is rated 130A at 2.4kV nominal / 2.54kV max.
What is the breaking capacity of JCK-B-4R?
JCK-B-4R has a breaking capacity of 50kA Sym. / 80kA Asym.. Confirm this covers the available fault current at the installation point.
Which standards and approvals apply to JCK-B-4R?
JCK-B-4R is listed under ANSI C37.46 R-Rated.
What is JCK-B-4R used for?
JCK-B-4R is listed for Motor protection, Motor Starters applications. Verify suitability for your circuit before ordering.
What are the ordering terms for JCK-B-4R?
JCK-B-4R: typical lead time 12-16 weeks. Submit a quote request for a firm quotation.
Data sources
- Part number
- JCK-B-4R
- Brand
- Eaton Bussmann
- Last updated
- 2026-10-10
- Canonical URL
- https://fusestock.com/products/eaton-bussmann-jck-b-4r/
Technical Specifications
- Part Number
- JCK-B-4R
- Manufacturer Part Number
- JCK-B-4R
- Series
- 2.4kV R-Rated Series
- Fuse Type
- Medium Voltage R-Rated Fuse
- Current Rating
- 130A
- Voltage Rating
- 2.4kV nominal / 2.54kV max
- AC / DC
- AC
- Breaking Capacity
- 50kA Sym. / 80kA Asym.
- Mounting
- Bolt Mount
- Application
- Motor protection · Motor Starters
- Standard
- ANSI C37.46 R-Rated
- Terminal Type
- Bolt-On
- Utilization Class
- R-Rated
- Reference Lead Time
- 12-16 weeks
- Source
- Bussmann Full Line Catalog 1007 (2018), page 7-22.
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