Overview
The Bussmann KRP-C-1200 is a Low-Peakâ„¢ Class L current-limiting, time-delay fuse designed for industrial-strength circuit protection. This time-delay, current limiting fuse has an interrupting rating of 300 kA at 600 Vac and 100 kA at 300 Vdc, making it suitable for high-capacity electrical systems where overload and short-circuit protection are critical.
Key Features
- All-purpose silver-linked fuse for both overload and short-circuit protection for high capacity systems
- 4 second response at 500% rated current for time-delay coordination with motor loads and other equipment
- Selective coordination ratio of 2:1 within Low-Peak fuse family prevents electrical shutdowns from extending beyond the failed circuit
- Class L fuse shape is cartridge blade
- Non-indicating, non-rejection design with bolted blade terminals for holder mount
Technical Specifications
- Ampere rating: 1200 A
- Voltage rating: 600 VAC
- Interrupting rating: 300 kA at 600 Vac and 100 kA at 300 Vdc
- Speed: Time Delay / Slow Blow
- Class: Class L
- Dimensions: 2.5″ Dia x 10 3/4″ L (63.5 x 254 mm)
- Item weight: 4.03 lbs
- Approvals: CE, UL, CSA, RoHS
Typical Applications
The KRP-C-1200 is used in:
- Medium and large industrial power distribution systems
- Motor control centers (MCC) and switchboards rated for Class L fuses
- High-capacity branch circuit protection
- Systems requiring coordinated, selective protection with time-delay characteristics
- Equipment where current-limiting action is needed to minimize fault damage
Compatibility & Replacements
Compatible With
- Class L fuse blocks and holders rated for 1200A at 600VAC
- Industrial electrical systems and motor control centers
- Eaton/Bussmann Low-Peak fuse family equipment
- UL and CSA listed electrical panels and distribution systems
Replaces / Drop-In Replacement For
- Part numbers: KRP-C1200, KRP-C 1200, KRP-C-1200, KRPC1200, KRPC-1200 (Eaton nomenclature variations)
- Direct replacement for existing KRP-C-1200SP installations
- Verify compatibility with your system integrator before ordering to confirm Class L acceptance
Works With
- Class L fuse blocks (Eaton catalog 51215 for single-pole, 51235 for three-pole)
- Selective coordination with other Low-Peak KRP-C fuses (600–2000A range)
- Medium-voltage motor control and branch-circuit protection schemes
