Overview
The Bussmann KRP-C-1600SP is a Class L current-limiting, time-delay fuse designed for high-capacity industrial power distribution and electrical infrastructure. This 1600A fuse features a 300 kA interrupting rating at 600 Vac and 100 kA at 300 Vdc. Built with a glass melamine tube construction with silver-plated end bells, the KRP-C-1600SP combines overload and short-circuit protection in a single cartridge element, making it ideal for protecting main feeders and large branch circuits in industrial control cabinets and power distribution systems.
Key Features
- Time-Delay Operation: 4 seconds minimum at 500% of rated current, protecting against nuisance trips from inrush currents while maintaining fast fault response
- Low-Peak Current-Limiting: Silver-linked fuse for both overload and short-circuit protection for high capacity systems
- High Interrupting Rating: 300 kA at 600 Vac and 100 kA at 300 Vdc for reliable fault containment
- Dual-Element Design: Combines thermal overload protection with current-limiting short-circuit response
- Class L Standard: Center-bolted cartridge configuration for secure mounting in Class L fuse holders
Technical Specifications
- Current Rating: 1600 A (1600 Amp)
- Voltage Rating: 600 VAC / 300 VDC
- Interrupting Rating (AC): 300 kA RMS Symmetrical
- Interrupting Rating (DC): 100 kA
- Fuse Class: Class L per UL 248-10
- Time-Delay Characteristic: 4 seconds minimum at 500% rated current
- Body Material: Glass/Melamine tube
- End Bells: Silver-plated
- Terminal Type: Center bolt-on blade
- Dimensions: 3 inches diameter × 10¾ inches length
- Agency Approvals: UL Listed (Guide JDDZ, File E4273), CSA Certified (Class 1422-02, File 53787), CE, RoHS compliant
Typical Applications
The Bussmann KRP-C-1600SP is widely deployed in industrial automation and power distribution environments including:
- Main feeder and sub-feeder protection in electrical substations
- Large industrial motor control centers and VFD input protection
- Primary circuit protection for high-capacity transformers
- Industrial automation control cabinets with large connected loads
- Data center and facility power distribution systems
- Oil refining, chemical processing, and manufacturing plant electrical systems
Compatibility & Replacements
Compatible With
- Class L fuse holders with center-bolt mounting
- 600 VAC / 300 VDC electrical systems
- Industrial control systems and power distribution panels
- Medium-voltage (600V) main feeder circuits
- Equipment rated for Class L current-limiting fuses
Replaces / Drop-In Replacement For
- Eaton Bussmann KRP-C-1600SP
- Cooper Bussmann KRP-C-1600SP (legacy branding)
- Other 1600A Class L low-peak fuses of equivalent rating and time-delay characteristics
Works With
- Bussmann KRP-C series fuse holders and mounting blocks
- Class L cartridge fuse holders (center-bolt configuration)
- UL 248-10 compliant electrical distribution equipment
- CSA C22.2 No. 248.10 certified industrial electrical systems
