Siemens 3RA2814-1FW10 Solid-State Time-Delayed Auxiliary Switch, Off-Delayed 24-240V AC/DC Original Brand New

Overview

The Siemens SIRIUS 3RA2814-1FW10 is a high-performance, solid-state time-delayed auxiliary switch designed for seamless integration with SIRIUS 3RT2 Contactors and 3RH2 Contactor Relays. This module provides a precise OFF-Delay (drop-out delay) function with an auxiliary control signal, crucial for time-dependent switching operations in control, starting, and regulation circuits, such as cascaded motor startup or fan running-on control. Its wide operating voltage range and integrated protective features make it a versatile and reliable addition to any industrial automation setup.

Key Benefit

• Precise Timing Control: Adjustable off-delay from 0.05 to 100 seconds for flexible automation processes.

• Enhanced Protection: Integrated varistor safeguards contactor coils from voltage spikes.

• Versatile Compatibility: Easily mounts onto Siemens 3RT20 contactors and 3RH2 contactor relays.

• Durable & Reliable: Solid-state construction ensures long-term durability and minimal maintenance.

• Wide Voltage Range: Operates efficiently on 24-240V AC/DC, 50/60 Hz systems.

Functions & Features

• Off-delayed solid-state auxiliary switch

• Control signal operation

• Relay configuration: 1 NC + 1 NO

• Time range: 0.05–100 seconds

• Integrated varistor for coil protection

• Screw terminal connection for easy wiring

• Snap-on installation on Siemens 3RT20 contactors and 3RH2 relays

Application

• Motor Control: Implementing cascaded motor start-up sequences.
• Ventilation Systems: Fan run-on control for delayed cooling/purging.
• Conveyors/Machinery: Time-delayed process steps or safety delays.
• General Industrial Automation: Incorporating time-dependent switching in control circuits without additional wiring.

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