Siemens 3RT2927-2PR11 Pneumatically Time-Delayed Auxiliary Switch, 10-180s Off Delay, 1 NO + 1 NC for 3RT2 Contactor Original Brand Brand News

Overview

The Siemens 3RT2927-2PR11 is a high-quality pneumatically time-delayed auxiliary switch designed to enhance the functionality of Siemens 3RT202 contactors. This reliable, off-delayed switch provides a precise and adjustable time delay, making it an essential component for various industrial automation and control applications. With its simple clip-on design, it offers a fast and secure method for expanding the capabilities of your existing contactor setup without the need for complex wiring.

Key Benefit

• Enhanced Control: Provides an adjustable off-delay function (10-180 seconds), allowing for precise timing in your control circuits.
• Seamless Integration: Specifically designed for easy mounting onto Siemens 3RT202 contactors, ensuring a perfect fit and reliable connection.
• Space-Efficient: The compact design minimizes the overall footprint of your control panel, a crucial benefit in tight industrial spaces.
• Reliable Performance: Built with Siemens’ renowned quality, the pneumatic timing mechanism offers consistent and dependable operation.
• Versatile Functionality: Features both a normally open (NO) and a normally closed (NC) contact, providing flexible options for different control logic requirements.
• Cost-Effective Solution: A simple and economical way to add a time-delay function to a standard contactor, eliminating the need for a separate, dedicated timer relay in many cases.

Function & Application

The Siemens 3RT2927-2PR11 auxiliary switch adds a crucial time-delay function to your control circuit. It is “off-delayed,” meaning that after the main contactor de-energizes, the auxiliary switch contacts will change state after a pre-set time.

Typical application

• Motor Control: Used to keep a fan or pump running for a set period after the main motor has been shut off for cooling or drainage purposes.
• Lighting Systems: Maintaining illumination for a few minutes in a storage area after the main switch is turned off.
• HVAC Systems: Timing the shutdown of fans or dampers in a ventilation system.
• Conveyor Systems: Ensuring a clear path for a product before the conveyor belt fully stops.

Technical Specification

• Product Number: Siemens 3RT2927-2PR11
• Product Type: Pneumatically Time-Delayed Auxiliary Switch
• Time Delay Type: Off-Delayed (Pneumatic)
• Time Delay Range: 10 – 180 seconds
• Contact Configuration: 1 NO + 1 NC (1 Normally Open, 1 Normally Closed)
• Mounting Type: Front mounting, clip-on
• Compatibility: Designed for Siemens 3RT202 Contactors
• Product Family: SIRIUS

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