Overview
The Siemens 3RT7027-1AL25 is a high-performance contactor designed for the reliable switching of three-phase motors and other electrical loads. Part of the renowned Siemens SIRIUS 3RT series, this contactor is built for durability, efficiency, and seamless integration into industrial control systems. Its compact S0 size allows for space-saving installation in control cabinets, while the robust screw terminals ensure a secure and long-lasting connection.
Key Features & Benefit
- High-Rated Performance: Rated for AC-3 duty up to 32A and 15kW at 400V, making it suitable for a wide range of standard motor control applications.
- Integrated Auxiliary Contacts: Features one normally open (1NO) and one normally closed (1NC) auxiliary contact, providing essential feedback and control signals for interlocking and monitoring circuits.
- Versatile Coil Voltage: Operates on a standard AC 230V 50/60Hz control voltage, compatible with most industrial power systems.
- Compact Design (Size S0): The S0 frame size minimizes the footprint in your control panel, allowing for higher component density and more efficient use of space.
- Reliable Screw Terminals: Provides a strong, vibration-resistant connection, simplifying wiring and maintenance while ensuring stable electrical contact.
- Safety and Standards: Manufactured by Siemens, a global leader in industrial automation, ensuring compliance with international safety and quality standards.
- Ease of Installation: Designed for quick and easy mounting on a DIN rail, reducing installation time and effort.
- Robust and Durable: Built to withstand demanding industrial environments, offering a long service life and high operational reliability.
Function
The Siemens 3RT7027-1AL25 contactor serves as a crucial component in industrial control panels, primarily used for:
- Motor Control: Switching and controlling the power supply to three-phase induction motors.
- Lighting Control: Managing large lighting circuits in industrial and commercial settings.
- Heating Loads: Switching resistive heating elements.
- General Purpose Switching: Activating and deactivating various electrical loads in automated systems.
- Load Interlocking: The built-in auxiliary contacts are essential for creating safety interlocks and control circuits.
Technical Specification
- Product Number: 3RT7027-1AL25
- Rated Current (AC-3): 32 A
- Rated Power (AC-3, 400V): 15 kW
- Auxiliary Contacts: 1NO + 1NC
- Control Coil Voltage: 230 V AC, 50/60 Hz
- Size: S0
- Termination Type: Screw Terminal
- Series: Siemens SIRIUS 3RT
- Mounting: DIN rail
- Short-Circuit Protection: Requires an external fuse or circuit breaker for protection.
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