Siemens 3RT2028-2NB30 SIRIUS Power Contactor, 3-Pole, 38A, 18.5kW, 21-28V AC/DC Coil, Spring-Loaded Terminal Original Brand New

Overview

The Siemens 3RT2028-2NB30 is a high-performance SIRIUS 3RT2 power contactor designed for reliable switching of motors and other industrial loads. It is engineered to meet the demands of modern automation systems, offering a compact and robust solution for various applications. This contactor is part of the SIRIUS modular system, allowing for seamless integration with other Siemens control products.

Key Features & Function

• High Power Rating: Rated for AC-3e/AC-3 operation, handling up to 38 A and 18.5 kW at 400 V, making it suitable for a wide range of motor control applications.
• Versatile Coil Voltage: Features a control supply voltage of 21-28 V AC/DC (50/60 Hz), providing flexibility in different control circuits.
• Integrated Varistor: The built-in varistor protects the coil from voltage spikes, extending the lifespan of the contactor and improving system reliability.
• Compact Design: Size S0, which is space-saving and ideal for installation in control cabinets with limited space.
• 3-Pole Configuration: Provides switching for three-phase systems.
• Auxiliary Contacts: Includes 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, allowing for easy integration into control and signaling circuits.
• Spring-Loaded Terminals: This innovative terminal type ensures a fast, reliable, and vibration-proof connection, reducing installation time and maintenance efforts.

Benefit

• Increased Reliability: The integrated varistor and robust design ensure a long operational life and reduce the risk of downtime.
• Time & Cost Savings: Spring-loaded terminals simplify wiring, leading to faster installation and lower labor costs.
• Space Efficiency: The compact S0 size is perfect for high-density control panels.
• Enhanced Safety: Provides reliable switching of electrical loads, ensuring safe operation of machinery.
• System Integration: As part of the Siemens SIRIUS family, it offers excellent compatibility and modularity with other control components.

Application

• Motor control for pumps, fans, compressors, and conveyors.
• Switching of heating and lighting systems.
• General industrial load control.
• Automation and control panels.

Technical Specification

• Product Type: Power Contactor
• Manufacturer: Siemens
• Product Series: SIRIUS 3RT2
• Product Number: 3RT2028-2NB30
• Current Rating: 38 A (AC-3e/AC-3)
• Power Rating: 18.5 kW @ 400 V
• Poles: 3
• Coil Voltage: 21-28 V AC/DC
• Auxiliary Contacts: 1 NO + 1 NC
• Termination: Spring-loaded terminal
• Size: S0

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