Eaton KTU-850 Fuse - Class L current-limiting 200kAIC @ 600V
Part Number: KTU-850
Quick Summary
The Eaton KTU-850 fuse provides fast-acting Class L protection for industrial power circuits. In harsh manufacturing environments, overcurrents and short circuits can halt production and threaten equipment. CE marked and RoHS compliant help you meet global safety and environmental requirements while simplifying procurement and compliance reporting. Designed for bolt mounting and ferrule-ended contact, it supports reliable service in control panels and power distribution blocks, reducing downtime and maintenance costs.
Product Information
Extended Description
KTU-850 Eaton: Eaton Bussmann Series Class L fuse, KTU, fast-acting, current limiting fuse, 900 A, bladable fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series KTU fuse
Catalog Number
KTU-850
UPC
051712179546
Product Length/Depth
10.75 in
Product Height
2.5 in
Product Width
2.5 in
Product Weight
4.25 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
850 A
Interrupt rating
200 kAIC at 600 Vac
Voltage rating
600 V
Material
Melamine glass tube Silver-plated end bells
Packaging type
Standard
Class
Class L
Fuse indicator
Non-indicating
Mounting method
Bolt
Special features
Ferrule design
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series KTU Class L fuse data sheet No. 1010
Feature: Class L fast-acting current-limiting design reduces let-through energy during faults. Business Impact: This minimizes damage to downstream components, extends equipment life, and lowers maintenance costs. Application: Ideal for protecting motor starters, drives, and control circuits in industrial panels. Feature: High amperage rating of 850 A with 600 V rating and 200 kAIC interrupt capacity. Business Impact: Enables safe isolation of high-current feeders, reducing arc flash risk and improving personnel safety. Application: Suitable for main feeders and power distribution blocks in rugged manufacturing lines. Feature: Durable melamine glass tube construction with silver-plated end bells. Business Impact: Maintains reliable contact and surge withstand in vibration-heavy environments. Application: Bolt-mounted protection in electrical cabinets and machine enclosures. Feature: Ferrule design and bolt mounting for robust, vibration-resistant connections. Business Impact: Simplifies installation and long-term reliability in demanding settings. Application: Industrial automation panels and distribution blocks. Feature: Compliance and standard packaging with CE/ RoHS; non-indicating status. Business Impact: Streamlines procurement and minimizes false indicators in system monitoring. Application: Global deployments in regulated environments.
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FAQs
Install the KTU-850 with bolt mounting into a fuse holder or block designed for Class L fuses. Verify the panel bus rating is 850 A at 600 V and tighten mounting bolts to the recommended torque per the Bussmann data sheet No. 1010, ensuring solid contact and proper clearance. This minimizes heat buildup and arcing during operation.
Key ratings are 850 A amperage, 600 V voltage, and 200 kAIC interrupt rating at 600 Vac. It is a fast-acting current-limiting device within the Class L family, designed to minimize let-through energy and protect downstream equipment while enabling quick disconnect under fault conditions.
Yes. The KTU-850 is well-suited for motor protection in 600 V drives and control panels where high fault currents exist. Its fast-acting current-limiting characteristic helps prevent motor overload and downstream equipment damage, but coordinate with upstream protections to avoid nuisance trips during motor inrush or startup.
The KTU-850 is CE marked and RoHS compliant, meeting global safety and environmental standards. These certifications support procurement and regulatory reporting for multinational projects, and the device remains aligned with Bussmann series catalog guidelines for compatibility.
Maintenance is typically visual and periodic checks of mounting hardware and contact cleanliness. The non-indicating fuse status reduces false alarms, while its rugged construction and high interrupt rating help minimize downtime and field replacements, delivering a favorable return on investment in automated environments.