Bussmann Eaton KTU-900 LIMITRON Class L Fast-Acting Fuse Overview
The Bussmann (Eaton) KTU-900 is a 900-ampere, 600VAC Class L fast-acting LIMITRON fuse with a bolted-blade end construction. Rated for 200kA RMS symmetrical interrupting capacity, the KTU series is engineered for main and feeder circuit protection in large distribution switchboards and power panelboards where extreme fault current levels demand high-performance current-limiting fuse technology. Melamine glass tube body with silver-plated end bells ensures reliable operation in high-cycle environments.
Key Features
- 900A current rating for main and feeder protection in large distribution systems
- 600VAC voltage rating for standard US distribution systems
- 200kA RMS symmetrical interrupting rating (200kA AIC)
- Class L designation — current-limiting, fast-acting for high-fault-current applications
- Bolted-blade end construction (bolted blade x bolted blade) for switchboard mounting
- Melamine glass tube body for high dielectric strength
- Silver-plated end bells for low contact resistance and reliable seating
- Dimensions: 2.5 in. Dia. x 10.75 in. L
Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Bussmann (Eaton) |
| Model | KTU-900 |
| UPC | 05171217955 |
| Current Rating | 900A |
| Voltage Rating | 600VAC |
| Interrupting Rating | 200kA RMS Sym. |
| Fuse Class | Class L |
| Type | Fast-Acting (LIMITRON) |
| Connection Type | Bolted Blade End x Bolted Blade End |
| Mounting | Bolt-On |
| Body Material | Melamine Glass Tube |
| End Bell Material | Silver-Plated |
| Dimensions | 2.5 in. Dia. x 10.75 in. L |
| Application | Large Distribution Switchboard, Power Panelboard |








