FLSR012-ID - 12Amp Fuse

FLSR012-ID - 12Amp Fuse

When system uptime is critical, the Littelfuse FLSR012ID 12 Amp 600‑Volt Time Delay Class RK5 Indicating Fuse delivers dependable protection while streamlining maintenance. Designed for industrial‑ and commercial‑power applications, this dual‑element, time‑delay fuse handles both short‑circuit and overload faults—reducing the risk of unexpected downtime. What sets it apart is the built‑in visual indicator: when the fuse opens, you can quickly spot the fault without tedious disassembly. That means faster diagnostics, fewer interruptions, and less hassle for your maintenance team—whether you’re running motor control centers, HVAC systems, heavy machinery, or electrical distribution panels.

Key Features and Benefits

• Dual‑element (time‑delay) design: Provides flexible protection by allowing brief surges (such as during motor starts) while still safeguarding against prolonged overloads and fault conditions.
• Integrated visual blown‑fuse indicator: The window turns dark when the element has opened, enabling quick recognition of a failed fuse and minimizing operator downtime.
• High interrupting rating and current‑limiting behavior: At 600 V AC the interrupt rating is up to 200,000 A (symmetrical) and for 300 V DC it’s up to 20,000 A, offering premium fault‐clear performance in challenging applications.
• Time‑delay (slo‑blo) capability: Helps prevent nuisance openings during transient events, while still reacting decisively to true fault conditions.
• Cost‑efficient protection for mission‑critical systems: By reducing destructive fault currents and enabling rapid identification of failed components, it helps maximize system life and minimize repair costs.

Technical Specifications

• Current Rating: 12 Amps (continuous)
• Voltage Rating: 600 V AC / 300 V DC
• Interrupting Rating: 200 kA (600 V AC); 20 kA (300 V DC)
• Fuse Class: Class RK5 dual‑element, time delay (Slo‑Blo)
• Indication Feature: Yes (visual indicator shows fuse has opened)
• Construction Style: Industrial cartridge fuse
• Family Style: FLSR_ID Series (Indicating)

Material Compliance and Certifications

• UL Listed: (File E81895) and CSA Certified (File LR29862) under applicable standards for low‑voltage fuses.
• RoHS compliant: Material selection and manufacturing processes designed to meet modern environmental and safety guidelines. (Manufacturer’s standard reference)
• Built via quality-controlled processes and designed for reliable service in industrial power environments.

Where It Works Best

• Motor control centers and branch circuits where motor inrush and transient loads exist
• HVAC, refrigeration and compressor systems that face short‑term startup surges
• Heavy machinery, manufacturing systems, and conveyor systems are vulnerable to overloads or short circuits
• Electrical distribution panels, switchboards, feeder circuits and service‑entrance protection where Class RK5 fuses are specified
• Water pumps, large fans, industrial motors, and systems requiring both high short‑circuit fault‑clear capability and visual maintenance feedback