Siemens Power contactor, 3-pole, size S0, spring, 11kW, 25A
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Siemens

Siemens Power contactor, 3-pole, size S0, spring, 11kW, 25A Part number 3RT2026-2KB40

EAN / Barcode 4011209839663
Product Type Control Panel
Product Class Power contactor, AC switching
ETIM Class Power contactor, AC switching
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Product Description

Product Overview

The Siemens 3RT2026-2KB40 is a SIRIUS 3RT2 power contactor designed for switching and controlling three-phase motors and other electrical loads in industrial automation systems. It is a 3-pole contactor in size S0, equipped with a 24 V DC control coil and integrated auxiliary contacts. The device uses spring-loaded terminals for fast, secure, and vibration-resistant wiring, making it suitable for modern control panels and PLC-based applications.

Key Features

  • SIRIUS 3RT2 power contactor for motor and load control
  • 3-pole main contact configuration
  • Integrated auxiliary contacts: 1 NO + 1 NC
  • Rated control supply voltage: 24 V DC
  • Spring-loaded terminals for main, auxiliary, and control circuits
  • Size S0 compact design for space-efficient installations
  • Suitable for PLC control and serial mounting

Technical Specifications

  • Article Number: 3RT2026-2KB40
  • Product Family: SIRIUS 3RT2 power contactors
  • Number of Poles: 3
  • Main Contact Type: Normally open power contacts
  • Auxiliary Contacts: 1 NO + 1 NC (integrated)
  • Rated Operational Current (AC-3, 400 V): 25 A
  • Rated Motor Power (AC-3, 400 V): 11 kW
  • Rated Control Voltage: 24 V DC
  • Rated Insulation Voltage: up to 690 V
  • Main Circuit Connection: Spring-loaded terminals
  • Auxiliary / Coil Connection: Spring-loaded terminals
  • Mounting: DIN rail or screw mounting
  • Operating Temperature Range: −25 °C to +60 °C

Compliance & Standards

  • Designed in accordance with IEC 60947 standards for contactors and motor starters
  • Fully compatible with Siemens SIRIUS accessories and expansion modules
  • Suitable for industrial automation and motor control environments

Applications

The Siemens 3RT2026-2KB40 is used for switching and controlling three-phase motors, pumps, compressors, and resistive or inductive loads in industrial control systems. Typical applications include motor starters, machine automation panels, conveyor systems, and production equipment where reliable switching, compact design, and fast wiring via spring terminals are required.

Technical Specifications

Depth107 mm
Height102 mm
Modular versionYes
Number of auxiliary contacts as normally closed contact1
Number of auxiliary contacts as normally open contact1
Number of normally open contacts as main contact3
Operating voltage AC 50 Hz690 V
Operating voltage AC 60 Hz690 V
Rated control supply voltage DC24 V
Rated operation current Ie at AC-1, 400 V40 A
Rated operation current Ie at AC-3, 400 V25 A
Rated operation current Ie at AC-4, 400 V15.5 A
Rated operation power at AC-3, 400 V11 kW
Rated operation power NEMA11.032482 kW
Type of electrical connection of main circuitSpring clamp connection
Voltage type for actuatingDC
Width45 mm
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