Siemens 3RA2813-1FW10 Solid-State ON-Delay Time-Delayed Auxiliary Switch for 3RT20 & 3RH2 Contactors Original Brand New

Overview

The Siemens 3RA2813-1FW10 is a high-performance, solid-state time-delayed auxiliary switch designed to enhance the functionality of Siemens 3RT20 contactors and 3RH2 contactor relays. This ON-delay timer module provides a reliable solution for time-critical industrial applications. With a wide time range of 0.05 to 100 seconds and a versatile control supply voltage of 24-240 V AC/DC, this unit offers exceptional flexibility.

Its integrated varistor protects the contactor coils by providing attenuation, ensuring a longer lifespan for your equipment. Featuring a simple screw terminal connection and a convenient front snap-on design, the 3RA2813-1FW10 is easy to install and integrate into new or existing control systems.

Key Features & Benefit

• Solid-State Reliability: Provides accurate and consistent timing, eliminating the wear and tear associated with mechanical components.
• ON-Delay Function: Delays the operation of the connected relay, ideal for applications requiring a specific time-based sequence.
• Versatile Time Range: Adjustable timing from 0.05 to 100 seconds to suit a wide variety of industrial processes.
• Broad Voltage Compatibility: Operates on a wide range of control supply voltages (24-240 V AC/DC, 50/60 Hz), simplifying integration into diverse electrical systems.
• Integrated Varistor: Protects the contactor coils from voltage spikes and surges, extending their service life and ensuring system stability.
• Easy Installation: Designed for tool-free, front-mounting installation on Siemens 3RT20 contactors and 3RH2 contactor relays.
• Flexible Contact Configuration: Equipped with a 1 Normally Closed (NC) and 1 Normally Open (NO) relay contact, allowing for versatile control circuit design.
• Secure Connection: Utilizes robust screw terminals for a reliable and secure electrical connection.

Function

The Siemens 3RA2813-1FW10 functions as an ON-delay timer. When the contactor or contactor relay coil is energized, the module's internal timer begins counting. After the preset time has elapsed, the auxiliary contacts (1 NC + 1 NO) switch their state. The Normally Open (NO) contact closes and the Normally Closed (NC) contact opens. This functionality is crucial for controlling sequences, ensuring equipment start-up delays, or managing staggered operations in automated systems.

Technical Specification

• Product Number: Siemens 3RA2813-1FW10
• Product Type: Solid-State Time-Delayed Auxiliary Switch
• Function: ON-Delay
• Time Range: 0.05 - 100 seconds
• Relay Contacts: 1 NC + 1 NO
• Control Supply Voltage: 24-240 V AC/DC, 50/60 Hz
• Attenuator: Integrated varistor for coil attenuation
• Terminal Type: Screw terminals
• Mounting: Front snap-on mounting on Siemens 3RT20 contactors and 3RH2 contactor relays

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