3RA2815-1FW10

Description

Overview

The Siemens 3RA2815-1FW10 is a high-performance solid-state time-delayed auxiliary switch designed for precision control in industrial applications. This specific model features an off-delayed function without an external control signal, providing reliable timing for processes that require a brief delay after the main contactor is de-energized. It integrates a robust relay configuration of 1 Normally Closed (NC) and 1 Normally Open (NO) contact, allowing for flexible control circuit design. Its compact design allows for easy, direct front-snapping installation onto Siemens 3RT20 contactors and 3RH2 contactor relays.

Key Benefit

• Reliable Off-Delay Switching: Ensures accurate time-delayed control without requiring a control signal.

• Versatile Compatibility: Snap-on installation for Siemens 3RT20 contactors and 3RH2 contactor relays.

• Wide Time Range: Adjustable from 0.05 to 100 seconds, offering flexibility for various applications.

• Durable Construction: Solid-state design with screw terminals for secure connections.

• Enhanced Coil Protection: Integrated varistor reduces voltage spikes and protects contactor coils.

• Universal Voltage Support: Works with 24–240 V AC/DC at 50/60 Hz for diverse electrical systems.

Function

• Time-delayed off auxiliary switching.

• 1 NC (normally closed) + 1 NO (normally open) relay output configuration.

• Snap-on mounting for seamless integration with Siemens contactors.

• Varistor integration for coil surge attenuation.

• Screw terminal connections for robust installation.

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