Siemens 3RT2026-1KB40 Power Contactor, 25A, 11kW, 24V DC, PLC Compatible Original Brand New

Overview

The Siemens 3RT2026-1KB40 is a high-performance 3-pole power contactor from the robust SIRIUS 3RT2 series, designed for switching motors and general industrial loads up to 11 kW (at 400 V AC-3e/AC-3). It is engineered specifically for modern automation systems, featuring a low-consumption 24 V DC control voltage coil that is highly suitable for direct connection to PLC outputs.

This Size S0 power contactor includes integrated surge protection via a plugged-in varistor to safeguard the coil against voltage peaks, ensuring reliable operation and extended service life. The main circuit is rated for 25 A at $400\text{ V}$ (AC-3e/AC-3).

Function

• Motor Switching: Safely and reliably switches 3-phase AC motors up to $11\text{ kW}$.
• Load Control: Suitable for general electrical load switching in automation and control panels.
• PLC Integration: The $24\text{ V DC}$ coil and integrated varistor make it perfectly suited for direct control by sensitive Programmable Logic Controller (PLC) outputs.

Application

The 3RT2026-1KB40 power contactor is an essential component in:

• Industrial Motor Starters (Direct-on-Line)
• Heating, Ventilation, and Air Conditioning (HVAC) systems
• Pump and Fan Control
• Conveyor Systems
• General Industrial Machinery

Technical Specification

• Product: Power Contactor
• Manufacturer: Siemens
• Part Number: 3RT2026-1KB40
• Product Series: SIRIUS 3RT2
• Rated Operational Current (AC-3e/AC-3): $25\text{ A}$
• Rated Operational Power (AC-3e/AC-3): $11\text{ kW}$ at $400\text{ V}$
• Number of Poles: 3
• Control Supply Voltage (Uc): $24\text{ V DC}$
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Coil Protection: Plugged-in Varistor
• Terminal Type: Screw Terminal
• Frame Size: S0

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