Description: Fast-acting, bolt-mount fuse.
Ratings:
Volts: 600Vac (or less)
Amps: 601-6000A
IR: 200kA RMS Sym.
Agency Information: CE, Std. 248-10, Class L, UL Listed, Guide JDDZ, File E4273 CSA Certified, Class 1422-02, File 53787.
General Information:
• Fast-acting, short-circuit protection. Particularly suited for protection of circuit breakers with lower interrupting ratings and non-inductive loads such as lighting and heating circuits.
• 99.9% pure silver-links provide low watt loss and low operating temperature on normal current levels; minmizes total clearing I2t fault energy let-through.
• High grade silica-sand filler accelerates response of fuse to short-circuits by having a quenching effect upon the fuse arc.
• O-ring seals maximize pressure build-up during currentlimiting actions and ensure filler retention.
• Silver-plated micro-peened terminals provide high electrical conductivity, minimize heat generation, and keep fuses and switches cool.
• UL interrupting rating of 200,000 amperes.
• Selective coordination (blackout prevention).
• Glass melamine tube.
• Silver-plated end bells.
• No fuse reducers available.
Features and Benefits
• 200kA interrupting rating provides high ratings at all circuit locations.
• Economical solutions for high-fault circuits.
• Quality construction using high-grade materials provides lower watts loss and operating temperatures with superior arc quenching during current-limiting action.
Typical Applications
• Large Distribution Switchboards
• Power Panelboards
For superior electrical protection, Cooper Bussmann recommends upgrading KTU fuse applications to Low-Peak KRP-C fuses
Dimensional Data*All other tolerances (±0.02)
Ampere Ratings (600 VAC)
| Catalog Number | Ctn. Qty. | Weight* | |
| Lbs. | Kg. | ||
| KTU-601 | 1 | 3.75 | 1.7 |
| KTU-650 | |||
| KTU-700 | |||
| KTU-750 | |||
| KTU-800 | |||
| KTU-850 | 4.25 | 1.927 | |
| KTU-900 | |||
| KTU-1000 | |||
| KTU-1200 | |||
| KTU-1350 | 6 | 2.721 | |
| KTU-1400 | |||
| KTU-1500 | |||
| KTU-1600 | |||
| KTU-1800 | 8.5 | 3.855 | |
| KTU-2000 | |||
| KTU-2001 | 17 | 7.711 | |
| KTU-2500 | |||
| KTU-3000 | 17.25 | 7.824 | |
| KTU-3500 | 24 | 10.886 | |
| KTU-4000 | |||
| KTU-4500 | 31 | 14.061 | |
| KTU-5000 | |||
| KTU-6000 | 34 | 15.422 | |
601-3000A is rated 340 VDC and 50 KAIC.
*Weight per carton.
Current-Limitation Curves
Time-Current Characteristic Curves–Average Melt
Fuseblocks (601 - 1200A):
Catalog Number Poles
51215 1
51235 3