Siemens 3RT2526-1BM40 Power Contactor AC-3, 25A, 11kW, 4-Pole, 220V DC, S0 Size Original Brand New

Overview

This Siemens SIRIUS 3RT25 power contactor (3RT2526-1BM40) is a high-performance, robust switching solution designed for reliable control of motors and non-motor loads. As a 4-pole contactor in the space-saving Size S0, it is perfectly engineered for demanding AC-3 applications up to 25 Amps (11 kW at 400V). It features a versatile 220 V DC operating coil, making it ideal for systems requiring a DC control voltage. The integrated contact configuration of 2 NO (Normally Open) and 2 NC (Normally Closed) main contacts offers superior flexibility in circuit design and load management.

Benefit

• High switching reliability for AC-3 motor applications

• Compact S0 size saves panel space

• Extended functionality with built-in auxiliary contacts

• Durable Siemens engineering ensures long service life

• Effortless installation with screw terminal design

• Suitable for a wide range of industrial applications including automation, manufacturing, and control systems

Technical Features

• Operating Category: AC-3

• Rated Current: 25 A

• Motor Power Rating: 11 kW at 400 V

• Poles: 4-pole configuration

• Coil Voltage: 220 V DC

• Main Contacts: 2 NO + 2 NC

• Auxiliary Contacts: 1 NO + 1 NC

• Terminals: Screw terminals for secure wiring

• Size: S0 (compact design for small control panels)

Function / Application

The Siemens 3RT2526-1BM40 contactor is primarily used for:

• Switching and Controlling Motors: Especially three-phase motors where a reversing function (forward/reverse) is required, utilizing the 2 NO and 2 NC main contacts.

• Load Switching: Controlling resistive, inductive, and capacitive loads in heating, lighting, and power factor correction systems.

• Pole-Changing Starters: Used in conjunction with other components to switch between different motor speeds (e.g., Dahlander windings).

• Industrial Automation Systems: Used as a reliable interface between the control system (e.g., PLC output) and the power circuit.

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