Bussmann LPS‑RK‑400SP — 400A Class RK1 Low‑Peak Dual‑Element Time‑Delay Fuse

Product Description

The Bussmann LPS‑RK‑400SP is a 400‑amp, Class RK1, Low‑Peak, dual‑element, time‑delay fuse engineered for superior short‑circuit and overload protection in industrial electrical systems. As part of Bussmann’s Low‑Peak LPS‑RK‑SP series, this fuse delivers exceptional current‑limiting performance, reducing fault energy and helping protect downstream equipment such as switchgear, motor control centers, and heavy‑duty machinery.

Its dual‑element design allows for reliable time‑delay operation—ideal for handling high inrush currents from motors, transformers, and inductive loads—while still reacting quickly to sustained overloads. Built for demanding commercial and industrial environments, this fuse is UL Listed, CSA Certified, and fully compatible with Class R fuse blocks.

⭐ Key Features & Benefits

• 400A Class RK1 fuse for high‑capacity industrial circuits

• Low‑Peak current‑limiting design reduces let‑through energy

• Dual‑element time‑delay supports motor and inductive load startup

• Superior short‑circuit protection compared to standard RK5 fuses

• Compatible with Class R fuse blocks

• UL Listed / CSA Certified

• High‑reliability Bussmann construction for harsh environments

🔧 Uses / Applications

• Industrial motor circuits

• Large HVAC and chiller systems

• Manufacturing equipment

• Pump stations

• Switchboards and MCCs

• Transformers and distribution panels

• General heavy‑duty branch‑circuit protection