Eaton Bussmann FRS-R-20 Fusetron 20A 600V Class RK5 Time-Delay Fuse

Description

Product Overview
The Eaton Bussmann FRS-R-20 Fusetron is an industrial electrical fuse designed to provide overcurrent protection in compatible power distribution and motor-control circuits. Its 20A rating and Class RK5 construction make it suitable for applications requiring time-delay operation and current-limiting protection.
The dual-element design helps the fuse tolerate certain temporary inrush currents without unnecessarily opening the circuit, while providing protection against sustained overloads and short circuits.

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Technical Specifications
Specification Details
Brand Eaton Bussmann
Product series Fusetron
Model / catalog number FRS-R-20
Current rating 20A
AC voltage rating 600V AC
DC voltage rating 300V DC
Fuse class Class RK5
Fuse construction Dual-element
Operating characteristic Time-delay
Protection type Current-limiting
Interrupting rating 200 kA at 600V AC; 20 kA at 300V DC
Response characteristic 10 seconds at 500% rated current
Fuse indication Non-indicating
Terminal connection Ferrule end × ferrule end
Approximate dimensions 127 × 20.6 mm (5 × 0.81 in)
Specifications are based on Eaton’s published information. Confirm the fuse-holder compatibility and the electrical requirements of the equipment before installation.

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Key Features
– 20A current rating for appropriately designed electrical circuits.
– 600V AC and 300V DC ratings for compatible applications.
– Class RK5 protection for industrial branch circuits.
– Dual-element, time-delay construction to help accommodate temporary inrush currents.
– Current-limiting operation to help limit fault-current effects.
– Non-indicating design without a dedicated open-fuse indicator.
– Ferrule-end connections for compatible fuse holders.
Applications
Depending on the equipment design and manufacturer requirements, the FRS-R-20 may be used in:
– Motor control centres and combination starters
– Industrial machinery disconnects
– Electrical power distribution panels
– Transformer protection circuits
– Compatible industrial control panels
– Branch circuits requiring Class RK5 time-delay protection
Replacement and Compatibility Guidance
Before replacing a fuse, check the exact model, current and voltage ratings, fuse class, dimensions and holder compatibility. Do not replace the FRS-R-20 with another 20A fuse solely because the current rating matches; the voltage rating, interrupting capacity and time-current characteristics must also meet the application requirements.
UAE Availability and Quotation
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