Siemens HR21 Disconnect Switch, 30A, 240V

The Siemens HR21 Disconnect Switch is a purpose-built solution for clean, safe power isolation in demanding industrial environments. With a 30 A, 240 V rating, this disconnect switch is designed to support service, maintenance, and replacement projects where a reliable, clearly identifiable shutoff is essential.

Key details at a glance

• Manufacturer: Siemens
• Part Number: HR21
• Product Type: Disconnect Switch
• Amperage: 30 A
• Voltage: 240 V

Why this disconnect switch matters

In industrial settings, safe and rapid power isolation is crucial for maintenance, repairs, and equipment replacement. The HR21 provides a dedicated, unambiguous point to disconnect electrical circuits, helping teams work more efficiently and reduce downtime. Its straightforward operation minimizes the risk of accidental energization during a job, supporting safer workflows on the shop floor or in a facility’s electrical room.

Ideal use cases

• Electrical maintenance on machines, motors, or control circuits
• Equipment replacement projects where a reliable disconnect point is required
• Industrial service work that demands a clearly labeled, easily accessible shutoff
• Situations where verification of compatibility by part number is essential before installation

Compatibility and installation notes

Verify fit by the HR21 part number and ensure alignment with your application requirements. While the HR21 is designed for industrial service scenarios, confirming compatibility with your specific switchgear or panel is essential. If you need help matching a part number or confirming compatibility, send us a message and we’ll assist you in confirming the best fit for your project.

What sets the HR21 apart

Unlike generic disconnect options, the HR21 is a Siemens engineering solution built to integrate into professional electrical service workflows. Its clear, straightforward disconnect capability helps technicians isolate circuits quickly, which can shorten maintenance windows and enhance overall site safety. When you’re updating or replacing aging disconnects, choosing a Siemens HR21 helps ensure consistency with other Siemens components in your system.

Practical tips for getting the most out of your HR21

• Double-check the part number (HR21) against your equipment catalog to confirm compatibility before ordering.
• Plan for reliable accessibility of the disconnect location to support fast, safe energization and de-energization during service work.
• Keep the contact information handy for Siemens support if on-site questions arise during installation or testing.

Ready to move forward with your Siemens HR21 disconnect switch? Confirm compatibility using the HR21 part number and application requirements, and if you’d like expert help, message us—we’re ready to assist with precise, project-tested guidance.