FLSR040 - 40 Amp Fuse Description
FLSR040 - 40 Amp Fuse
The FLSR040 is a 40A Class RK5 time-delay fuse designed for industrial and commercial electrical applications where dependable overcurrent protection is essential. Rated for up to 600VAC and 300VDC, it uses a dual-element, time-delay design that can handle brief startup or inrush currents without opening unnecessarily. That’s especially useful around equipment where a short current surge is simply part of normal operation. If you’re replacing an existing FLSR040, the important details are easy to identify: 40 amps, Class RK5, time-delay, 600 VAC maximum, 300 VDC maximum, and non-indicating construction.
Key Features and Benefits
- 40-amp continuous rating for circuits and equipment designed around a 40A fuse.
- Time-delay performance allows the fuse to ride through temporary inrush currents that can occur during equipment startup.
- Dual-element design provides the operating characteristics expected from the FLSR family.
- Rated for applications up to 600VAC and 300VDC.
- Class RK5 fuse configuration for equipment requiring this specific fuse class.
- Industrial cartridge construction works with a properly rated fuse block, clip, or holder.
- Non-indicating design for applications where visual fuse indication isn’t required.
Technical Specifications
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Catalog Number: FLSR040
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Series: FLSR
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Continuous Current Rating: 40A
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Fuse Class: Class RK5
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Fuse Style: Dual Element
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Opening: Slo-Blo / Time Lag (T) / Time Delay
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Maximum AC Voltage: 600VAC
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Maximum DC Voltage: 300VDC
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AC Interrupt Amperage: 200,000A
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Additional AC Interrupt Amperage: 300,000A
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DC Interrupting Rating: 20,000A at 300VDC
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Construction: Industrial Cartridge
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Indicating: No
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Mounting: Fuse Block / Clip / Holder
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Holder Family: LFR60060 Series
Material Compliance and Certifications
The FLSR040 is a Class RK5 fuse. The product information provided for this catalog number does not specify individual RoHS, REACH, lead-free, halogen-free, or similar material-compliance declarations.
Where It Works Best
The FLSR040 makes sense in electrical systems where equipment can pull extra current for a short period during startup. Rather than reacting immediately to every temporary surge, its time-delay characteristic is designed to accommodate normal short-duration inrush while still providing overcurrent protection.
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Specifications
- Width:1.06
- Depth:1.06
- Height:5.5
- Amperes:40
- A.I.C. Rating & Volts:200 kA @ 600 V.AC
- Type:FLSR
- Additional Notes:Cartridge Style, Non-Indicating, Time-Delay, current-limiting Class R Fuse
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