Overview
The Siemens SIRIUS 3RT7027-1AL20 is a powerful and reliable contactor designed for a wide range of industrial applications. As part of the SIRIUS modular system, it offers exceptional performance, durability, and seamless integration into existing control systems. This specific model is an AC-3 contactor with a rated current of 32A and a power rating of 15kW at 400V. It features a 230V AC 50/60Hz operating coil and is housed in a compact size S0 frame. The screw terminals ensure secure and straightforward wiring.
Key Features & Benefit
- High Performance: Rated for AC-3 duty, this contactor is ideal for switching three-phase motors and other inductive loads.
- Robust & Durable: Built with high-quality materials, the SIRIUS 3RT7027-1AL20 is designed for a long service life, reducing maintenance costs and downtime.
- Compact Design (Size S0): Its small footprint allows for space-saving installation in control panels and cabinets.
- Versatile Power Rating: With a 32A current rating and 15kW power at 400V, it can handle a variety of medium-power applications.
- Efficient Operation: The 230V AC coil provides reliable switching performance for common industrial power supplies.
- Secure Wiring: Screw terminals offer a time-tested and secure connection method, ensuring stability and safety.
- Modular System Integration: As a part of the Siemens SIRIUS family, it can be easily combined with a variety of accessories, such as overload relays and auxiliary contact blocks, to build comprehensive motor starter solutions.
- Globally Recognized Quality: Siemens is a leader in industrial automation, and this product adheres to international standards for quality and safety.
Function
The Siemens 3RT7027-1AL20 contactor is primarily used for the following functions:
- Switching Motors: It is used for the direct-on-line (DOL) starting and stopping of three-phase AC motors.
- Controlling Power Circuits: It can be used to switch electrical circuits for heaters, lighting, and other resistive or inductive loads.
- Remote Operation: By energizing or de-energizing the 230V AC coil, the contactor’s main contacts can be controlled remotely from a PLC, push button, or other control devices.
- Safety Disconnect: It serves as a reliable means of disconnecting power to a load for maintenance or in emergency situations.
Technical Specification
- Product Type: Contactor, AC-3
- Product Number: 3RT7027-1AL20
- Manufacturer: Siemens
- Series: SIRIUS
- Rated Operational Current (AC-3): 32A
- Rated Operational Power (AC-3): 15kW at 400V
- Operating Coil Voltage: 230V AC, 50/60Hz
- Size: S0
- Terminal Type: Screw Terminal
- Main Contacts: 3-pole
- Auxiliary Contacts: W/O (without)
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