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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