Siemens 3RT2025-1KB40 Power Contactor, 17A, 7.5kW, 24V DC, S0 Frame, Screw Terminal Original Brand New

Overview

The Siemens 3RT2025-1KB40 is a high-performance, 3-pole power contactor designed for reliable and efficient switching of electrical loads up to 17A. Part of the SIRIUS family, this S0 frame size contactor is engineered for industrial applications, particularly those requiring precise control from PLC outputs. Its compact design, integrated protection features, and user-friendly screw terminals make it a versatile and dependable component for motor control and switching circuits.

Key Features & Benefit

• High Performance: Rated for AC-3e/AC-3 operation with a current rating of 17A and a power rating of 7.5 kW at 400V, ensuring robust performance for a wide range of applications.
• Integrated Surge Protection: The built-in, plugged-in varistor provides effective overvoltage protection for the 24V DC control circuit, safeguarding sensitive PLC outputs and prolonging the lifespan of the contactor.
• Efficient Control: Designed specifically for 24V DC control voltage, with a wide tolerance range (0.7-1.25* Uc) to accommodate voltage fluctuations, ensuring reliable operation.
• Convenient Auxiliary Contacts: Comes standard with 1 NO (Normally Open) and 1 NC (Normally Closed) auxiliary contacts, providing immediate feedback on the contactor’s status for monitoring and interlocking purposes.
• Easy & Secure Wiring: Features a robust screw terminal connection, allowing for secure and simple installation, maintenance, and wiring.
• Compact Design: The S0 frame size allows for space-saving installation in control panels and cabinets without compromising on performance.
• Optimized for PLC Integration: Its features and specifications are ideally suited for direct control from Programmable Logic Controllers (PLCs), simplifying system design and wiring.

Function

The Siemens 3RT2025-1KB40 power contactor is primarily used for the following functions:

• Motor Control: Switching and controlling the on/off state of 3-phase asynchronous motors.
• Load Switching: Activating and deactivating various electrical loads, such as heaters, lighting systems, and other industrial equipment.
• Circuit Interruption: Acting as a switching element in control circuits for automation systems.
• Safety Interlocking: Using its auxiliary contacts to provide status feedback for safety circuits and interlock systems, preventing unintended operation.

Technical Specification

• Product Number: 3RT2025-1KB40
• Product Type: Power Contactor
• Number of Poles: 3-pole
• Current Rating (AC-3e/AC-3): 17 A
• Power Rating (AC-3e/AC-3): 7.5 kW at 400 V
• Control Voltage: 24 V DC (0.7-1.25* Uc)
• Auxiliary Contacts: 1 NO + 1 NC
• Connection Type: Screw Terminal
• Frame Size: S0
• Special Features: Plugged-in varistor, suitable for PLC outputs
• Note: No additional auxiliary switch blocks can be added.

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