Siemens HF363 - 100A, 3-Pole, Fused Safety Switch

The Siemens HF363 is a high-performance fused safety switch crafted for industrial and commercial environments where safe electrical isolation is non‑negotiable. This 3‑pole, 100A device delivers reliable disconnection under load and seamlessly supports lockout/tagout procedures to protect maintenance personnel.

Three‑phase protection you can count on. The 3‑pole design ensures all phases are interrupted simultaneously, reducing the risk of backfeed and arcing when switching power. With a 100A amperage rating, it’s well suited for demanding motor loads, pumps, conveyors, and other heavy-duty equipment common in manufacturing floors and facility systems.

Built-in fuse protection for coordinated safety. The HF363 provides overcurrent protection right at the switch to help guard downstream equipment and wiring, streamlining protection schemes and improving fault response. Designed for long-term durability, it stands up to the rigors of busy industrial environments while maintaining dependable performance over time.

Versatile, job-ready installation for a range of applications. Ideal for motor control centers, process lines, HVAC installations, and compact power distribution panels, the HF363 is a reliable choice for panel builders, electrical contractors, and maintenance teams who require quick, safe isolation during servicing.

Key benefits

• 3-Pole fused safety switch provides true three-phase isolation for reliable shutdowns.
• 100A rating supports substantial industrial loads without compromising safety.
• Integrated fuse protection delivers fast fault clearing and protects circuits and equipment.
• Lockout/tagout compatibility enables safe maintenance and compliant procedures.
• Disconnection under load ensures equipment can be safely isolated even when active.
• Industrial-grade durability built to endure demanding environments and daily use.

Practical usage tips. Pair the HF363 with appropriately rated fuses that match your circuit requirements, and maintain a ready supply of spare fuses for quick replacements. Ensure proper panel mounting and clearance, label the switch clearly, and follow your site's lockout/tagout protocols to maximize safety during servicing.