Littelfuse
FLNR012 - 12 Amp Fuse
FLNR012 - 12 Amp Fuse
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FLNR012 - 12 Amp Fuse
The FLNR012 is a reliable 12-amp, 250V Class RK5 time-delay fuse, ideal for your industrial and commercial electrical systems. Its dual-element design handles time delays and high interrupting capacity, perfect for circuits with startup inrush currents. Rated for 12A at 250 VAC and 125 VDC, it can interrupt up to 300 kA AC and 20 kA DC. The Slo-Blo feature allows for temporary current surges while still protecting against sustained overcurrent conditions.
Key Features and Benefits
- A 12A continuous current rating provides overcurrent protection for circuits specified for a 12A fuse.
- 250 VAC maximum voltage rating supports a broad range of industrial and commercial electrical applications.
- 125 VDC maximum voltage rating provides additional application flexibility where the specified DC ratings are appropriate.
- Class RK5 fuse design makes the FLNR012 suitable for equipment and systems requiring this specific fuse class.
- Dual-element construction combines time-delay characteristics with overcurrent protection.
- Slo-Blo/time-delay opening helps accommodate normal short-duration inrush or startup currents.
- Industrial cartridge construction is designed for installation in compatible fuse blocks, clips, and holders.
- LFR25030 Series holder compatibility makes it easier to verify the correct supporting hardware.
Technical Specifications
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Catalog Number: FLNR012
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Series: FLNR
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Continuous Current Rating: 12 A
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Fuse Class: Class RK5
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Fuse Style: Dual Element Fuse
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Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
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Maximum AC Voltage: 250 VAC
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Maximum DC Voltage: 125 VDC
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Interrupting Rating: 300 kA AC; 20 kA DC
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Additional Listed AC Interrupt Amperage: 200,000 A and 300,000 A at 250 V AC
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Listed DC Interrupt Amperage: 20,000 A at 125 V DC
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Size / Construction: Industrial Cartridge
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Indicating: No
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Mounting Method: Fuse Block / Clip / Holder
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Compatible Holder: LFR25030 Series
Material Compliance and Certifications
The FLNR012 is identified as a Class RK5 fuse. The supplied product specifications do not provide sufficient information to responsibly state any additional agency certifications, environmental compliance standards, or material compliance designations.
Where It Works Best
The FLNR012 works best in industrial and commercial electrical circuits that specifically call for a 12A Class RK5 time-delay fuse. Its dual-element, time-delay operation is especially useful where equipment can experience a temporary increase in current during normal startup or operation. Rather than opening only in response to a brief surge, the fuse provides time-delay behavior while retaining protection against sustained overcurrent conditions.
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