SIRIUS timing relays are used for time-delayed switching in control, start-up, protection and regulation circuits. 3RP20/25 time relays are ideal timer components for control cabinet, switchgear and control systems. 7PV15 timing relays are ideal for use in heating, ventilation, air conditioning and compressors.

The choice depends on your mounting requirements and application environment.

• 3RP25 multifunctional relays are available for all conventional applications in an industry-standard width of 22.5 mm or space-saving 17.5 mm, with up to 27 integrated timing functions.
• 3RP20 compact relays are recommended where there is only minimal clearance between standard mounting rails or minimal mounting depth in switchboxes, due to their reduced height and mounting depth.
• 7PV15 narrow relays in 17.5 mm enclosure are suitable for all standard applications in control cabinets and distribution boards and comply with EMC requirements for residential applications.
• 3RA28 function modules are designed for assembly of starters and contactor assemblies for direct-on-line and star-delta starting.

Yes, the SIRIUS 7PV15 timing relays in 17.5mm enclosure are suitable for all standard applications and comply with EMC requirements for residential applications.

Solid-state time-delay 3RA28 auxiliary switches are designed for contactor coil voltages within the range of 24 to 240V AC/DC. They're used for switching control and alarm signals in electronics applications, such as allowing run-on of a pump or fan, similar to an OFF-delay timing relay, or for delayed activation of a gate drive.

The SIRIUS 3RP25 timing relay simulator allows you to visualize the sequence of different timing functions and simulate a variety of fault cases. With this tool, you can verify timing behavior and troubleshoot potential issues in a virtual environment before deploying the relay in your control system.

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Alt text: 3RP25 timing relay simulator interface showing timing function visualization with relay output sequences and settings.