Siemens 3RT1926-2FK31 Solid-State OFF Delay Auxiliary Switch for 3RT1 Contactors Original Brand New

Overview

The Siemens 3RT1926-2FK31 is a highly reliable solid-state, time-delayed auxiliary switch designed to extend the functionality of Siemens 3RT1 series contactors. This front-side auxiliary switch provides a crucial OFF delay function, making it an ideal component for applications requiring a time-delayed de-energization of a circuit.

With an adjustable time range of 5 to 100 seconds and a versatile control voltage of 100-127 V AC/DC, it offers precise and flexible control. It features one normally open (1 NO) and one normally closed (1 NC) contact, ensuring robust and versatile switching capabilities without the need for an external control signal.

Key Features & Function

• Solid-State Technology: Provides silent, wear-free operation and high switching accuracy compared to electromechanical timers, leading to a longer service life and increased reliability.
• Time-Delayed OFF Function: Delays the opening of the NO contact and the closing of the NC contact for a set duration after the main contactor is de-energized. This is essential for applications like motor rundown or controlled system shutdown.
• Adjustable Time Range: The time delay can be precisely set from 5 to 100 seconds, allowing for customization to meet specific application requirements.
• Versatile Voltage: Compatible with both AC and DC control voltages ranging from 100 to 127 V, simplifying integration into various control systems.
• Contact Configuration: Equipped with 1 NO (Normally Open) and 1 NC (Normally Closed) contact, providing dual-function switching and feedback capabilities.
• Front-Side Mounting: Easily and securely mounts on the front of Siemens 3RT1 contactors, saving panel space and simplifying wiring.
• No External Control Signal Required: The OFF delay function is triggered by the de-energization of the main contactor, streamlining the control circuit and reducing complexity.

Benefit

• Enhanced Reliability: Solid-state design eliminates moving parts, reducing mechanical wear and increasing operational lifespan.
• Precision Control: Ensures accurate and repeatable timing for critical industrial processes.
• Space-Saving Design: Front-side mounting on the contactor minimizes panel footprint, optimizing control cabinet layout.
• Easy Integration: Designed specifically for seamless use with Siemens 3RT1 contactors, ensuring perfect compatibility and simple installation.
• Versatility: Suitable for a wide range of industrial applications, including automation, motor control, and process engineering.
• Cost-Effective Solution: Provides advanced timing functionality without the need for a separate, bulky timing relay.

Application

The Siemens 3RT1926-2FK31 is ideal for use in:

• Motor control systems requiring a time-delayed shutdown.
• Conveyor belt systems where a controlled stop is necessary.
• Pump and fan control to allow for coasting.
• HVAC systems for delayed fan shutoff.
• Industrial machinery and automation where sequential operations require an OFF delay.

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