Product Description
The Bussmann Fusetron FRS‑R‑400 is a heavy‑duty, 400 A, 600 V AC time‑delay fuse engineered for industrial and commercial overcurrent protection. Featuring a dual‑element, current‑limiting design, this fuse is ideal for motor circuits, power panels, and other systems subject to inrush currents or transient loads. It delivers dependable protection against both overloads and short circuits — protecting downstream equipment and reducing risk of damage.
Product Details
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Brand: Bussmann / Fusetron
- Condition: Used
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Model / Part Number: FRS‑R‑400
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Amperage Rating: 400 A
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Voltage Rating: 600 V AC / 300 V DC
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Fuse Type: Dual‑Element, Time‑Delay, Class RK5
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Interrupting Rating (AIC): 200 kA @ 600 V AC; 20 kA @ 300 V DC
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Response Time: Minimum 10 seconds at 500% rated current
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Connection Type: Blade‑end x Blade‑end (requires matching fuse holder)
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Applications: Motor circuits, control panels, switchgear, power distribution systems, industrial equipment protection
Key Features
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Dual‑element time‑delay design tolerates inrush currents from motors/transformers without nuisance tripping.
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Class RK5 current‑limiting performance — reduces fault energy and protects downstream components during short circuits.
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High interrupting rating (200 kA AC) ensures safe operation even under severe fault conditions.
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Suitable for heavy‑duty industrial environments — reliable, long-lasting protection for motors, panels, and distribution systems.
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Cartridge-type fuse requiring a corresponding fuse holder for proper installation.
IS.02282024.18
