Product Description
The Littelfuse FLSR‑30 is a 30 Amp, 600 Volt AC (300 V DC) cartridge fuse from the RK5 series, designed to deliver dependable current‑limiting, dual‑element, time‑delay protection. Its robust design ensures reliable defense against overloads and short circuits while tolerating harmless inrush currents — making it ideal for motor circuits, panelboards, switchboards, feeders, service‑entrance protection, and general‑purpose industrial installations.
This fuse series is widely regarded for its consistent performance, high interrupt rating, and long‑term reliability — making FLSR the go-to choice when safety and equipment protection matter.
Product Details
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Brand: Littelfuse
- Condition: Used
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Model / Part Number: FLSR‑30 (also listed as FLSR030)
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Amperage Rating: 30 A
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Voltage Rating: 600 V AC / 300 V DC
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Fuse Class: RK5, Dual‑Element, Time‑Delay / Current‑Limiting Cartridge Fuse
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Interrupt Rating: 200 kA RMS symmetrical @ 600 V AC (DC rating 20 kA at 300 V)
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Construction / Style: Industrial cartridge fuse — typical cartridge dimensions for RK5 style.
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Rated Uses: Panelboards, switchboards, service‑entrance disconnects, motor control centers, feeders, general‑purpose circuits, branch circuits with or without motor loads.
Key Features
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Dual‑element, time‑delay design tolerates temporary inrush currents (e.g. motor start‑up or transformer energizing) without nuisance fuse blowing.
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Current‑limiting performance reduces let‑through energy during faults — protecting wiring and downstream equipment from damage.
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High interrupt rating (200 kA @ 600 V AC) — suitable for industrial-grade short‑circuit protection and heavy-duty circuits.
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Class RK5 cartridge format — compact and fits standard holders, widely used across panelboards, switchboards, and motor control centers.
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Reliable for a broad range of applications — from general‑purpose circuits to motor controllers, feeders, and service‑entrance protection.
