Siemens HF365 400A 3P 600V Safety Switch, NEMA 1, Fusible | AmpState

Designed for everyday electrical work, the Siemens HF365 safety switch provides reliable equipment disconnect and isolation at the point of use. This fusible, NEMA 1 enclosure 400 A, 3-pole switch is built to withstand the rigors of industrial environments while simplifying maintenance and future replacements.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: HF365
• Product type: Safety Switch (fusible)
• Amperage: 400 A
• Poles: 3
• Voltage: 600 V
• Enclosure: NEMA 1

What makes the HF365 stand out

• OEM-aligned replacement option: Ideal for replacement projects where you need to keep the bill of materials consistent with the original part number, reducing downtime and wiring rework.
• Fusible protection with point-of-use isolation: The fusible design provides both disconnect capability and overcurrent protection in a single unit, streamlining installation and maintenance.
• Robust 3-pole, 400 A capacity: Ready to handle demanding industrial loads while offering straightforward wiring and integration with existing 600 V systems.
• Indoor, durable NEMA 1 enclosure: Built for controlled environments where dust and moisture protection are less critical, keeping installation simple and cost-effective.
• Easy sourcing through AmpState: Available from AmpState, with assistance available to confirm fit and compatibility for your exact panel or distribution configuration.

Ideal use cases

• Equipment disconnects and isolation points in manufacturing lines, conveyors, or automation cabinets.
• Replacement or spare parts stock to maintain BOM fidelity and minimize downtime during maintenance shutdowns.
• New or retrofit installations in indoor facilities where a rugged, fusible safety switch is required for 600 V systems.

How it helps you operate more efficiently

The HF365 combines Siemens reliability with practical, site-ready installation. Its fusible design means you don’t have to juggle separate disconnect and protection devices, which can shorten installation time and reduce the number of parts to stock. When you source this switch from AmpState, you also gain access to compatibility guidance—a quick message can confirm that HF365 fits your specific equipment and BOM needs.

Practical tips for installation and maintenance

• Verify your system is a 600 V, 3-pole configuration to match the HF365’s ratings and ensure correct wiring of the three poles.
• Keep a spare HF365 on hand for preventive maintenance to preserve original BOM alignment and minimize project downtime.
• Follow local electrical codes and Siemens installation guidelines when wiring the fusible switch to your distribution system.
• Leverage AmpState support to confirm compatibility if you’re replacing an older Siemens part or integrating with a legacy control panel.

Ready for dependable, code-compliant isolation and protection at the point of use? The Siemens HF365 400 A 3P 600 V Safety Switch, NEMA 1, Fusible is available from AmpState—plus expert compatibility guidance to help you confirm fit quickly and confidently.