JKS-30
30A 600V Class J fast-acting fuse with 200kA breaking capacity for branch circuit protection in industrial applications.
Product Overview
Description
The JKS-30 is a high-performance Class J fuse designed for branch circuit protection in industrial applications.
With 600V rating and 30A current capacity, this fuse provides reliable protection for control circuits and feeders.
The 200kA breaking capacity ensures safe interruption of severe fault currents.
Product Series
JKS
Primary Application
Branch circuit protection
Key Features
- 600V rating for industrial applications
- 200kA breaking capacity
- Space-efficient Class J design
- Fast-acting for branch circuit protection
- High-visibility blown fuse indicator
- UL Listed and CSA Certified
Specifications
| Voltage Rating | 600V AC |
|---|---|
| Current Rating | 30A |
| Breaking Capacity | 200kA AC |
| Class | J |
| Time-Current | Fast-acting |
| Size | Compact Class J |
| Standards | UL 248-8, CSA C22.2 |
Applications
Branch circuit protection
Electronic system design
Control circuits
Industrial automation and control
Feeder circuits
Electronic system design
Motor disconnect switches
Motor drive and control systems
Industrial panel boards
Industrial automation and control
HVAC equipment
Electronic system design
FAE Expert Insights
"Class J fuses have been my go-to recommendation for industrial branch circuits for over 20 years. The JKS-30 offers an excellent balance of performance, size, and cost. The 200kA breaking capacity handles even the largest industrial fault currents, providing safety margin. I particularly appreciate the compact size - Class J fuses are significantly smaller than equivalent Class RK fuses, which is valuable in space-constrained panels. The fast-acting characteristic provides excellent protection for control circuits and minimizes wire damage during faults. Bussmann quality is consistently high, with reliable performance across temperature ranges. I recommend this fuse for any 30A branch circuit application."
Reliable branch circuit protection with excellent breaking capacity and compact size
— Robert Chen, BeiLuo
Frequently Asked Questions
Can I replace a Class RK fuse with a Class J fuse?
Class J fuses can replace Class RK fuses only if the voltage rating is adequate and the physical space allows. Class J fuses are smaller but require Class J fuse blocks/holders. Never install a higher rated fuse than specified. Consult an electrician for proper replacement.
Class J can replace RK if voltage adequate and holder compatible. Consult electrician.
What is the maximum fault current this fuse can interrupt?
The JKS-30 has a breaking capacity of 200kA AC. This means it can safely interrupt fault currents up to 200,000 amperes. For applications with higher available fault currents, consider the LPJ-30SP with 300kA breaking capacity.
Verify your system's available fault current. Use LPJ series for higher fault currents.
Is this fuse suitable for motor circuits?
The JKS-30 is a fast-acting fuse designed for branch circuits, not motor circuits. For motor protection, use Class RK time-delay fuses that can handle motor starting currents without nuisance opening.
Use Class RK fuses for motor circuits. Use JKS for branch circuits only.
What standards does this fuse meet?
The JKS-30 meets UL 248-8 and CSA C22.2 standards. It is UL Listed and CSA Certified for North American applications. The fuse also meets IEC 60269 standards for international use. For detailed specifications and application support on bussmann JKS-30, refer to the datasheet or contact our team.
Verify required certifications for your application. Contact us for certification documentation.
What is the physical size of this fuse?
Class J fuses have a compact design. The JKS-30 measures approximately 2.5 inches in length with a diameter of about 0.8 inches. This compact size allows more fuses in limited panel space compared to Class RK fuses.
Verify physical dimensions fit your fuse block and panel space requirements.