Littelfuse Class RK5 Fuses
IDSR Series
Littelfuse’s IDSR combines a 600Vdc capability with indication to provide an ideal solution fro many DC applications.
Amperage range (A): 1/10 – 600A
Voltage ratings (Vac): 600V
Voltage ratings (Vdc): 600V
Features:
- POWR-PRO performance
- Superior time delay
- Reduces downtime
- Pinpoint open fuses immediately
Applications:
- DC circuits
- Solar inverters
- Motors
- Transformers
- Solenoids
- Fluorescent lighting
FLSR_ID Series
The FLSR_ID series features a dual element design which provides advanced short circuit and overload protection. This series provide excellent protection for all types of circuits, especially those containing motors and are available in indicating and non-indicating versions.
Amperage range (A): 1/10 – 600A
Voltage ratings (Vac): 250V, 600V
Voltage ratings (Vdc): 125V, 300V
Features:
- Indication
- Dual-element design
- Available without indication
- Current limiting
Applications:
- Service entrance switches
- Transformers
- Switchboard mains and feeders
- Motor control central mains and motor branch circuits
- All general purpose circuits
FLNR_ID Series
The FLNR_ID is also available in indicating and non-indicating versions, the FLNR/FLSR series of fuses feature an element design providing advanced short circuit and overload protection.
Amperage range (A): 1/10 – 600A
Voltage ratings (Vac): 250V, 600V
Voltage ratings (Vdc): 125V, 300V
Features:
- Indication
- Dual-element design
- Available without indication
- Current limiting
Applications:
- Service entrance switches
- Transformers
- Switchboard mains and feeders
- Motor control central mains and motor branch circuits
- All general purpose circuits
FLSR Series
The FLSR series is available in both indicating and non-indicating versions and provide excellent protection for all types of circuits, especially motor ones.
Amperage range (A): 1/10 – 600A
Voltage ratings (Vac): 250V, 600V
Voltage ratings (Vdc): 125V, 300V
Features:
- Indication
- Dual-element design
- Available without indication
- Current limiting
Applications:
- Service entrance switches
- Transformers
- Switchboard mains and feeders
- Motor control central mains and motor branch circuits
- All general purpose circuits
FLNR Series
Amperage range (A): 1/10 - 600A
Voltage ratings (Vac): 250V, 600V
Voltage ratings (Vdc): 125V, 300V
Features:
- Indication
- Dual-element design
- Available without indication
- Current limiting
Applications:
- Service entrance switches
- Transformers
- Switchboard mains and feeders
- Motor control central mains and motor branch circuits
- All general purpose circuits
For further information on Littelfuse’s class RK5 fuses please call: 01444 243 452 or email: .(JavaScript must be enabled to view this email address).

Littelfuse
Littelfuse is a global manufacturer of leading technologies in circuit protection, power control, and sensing. Littelfuse products are found in automotive and commercial vehicles, industrial applications, data and telecommunications, medical devices, consumer electronics, and appliances. They partner with customers to design, manufacture, and deliver innovative, high-quality solutions, for a safer, greener, and increasingly connected world—everywhere, every day.
Further information:
You can find further information on Littelfuse using the following links:
Tel: 01444 243 452
Fax: 01444 870 722
Email: enquiries@gdrectifiers.co.uk
