Siemens 3RT2926-5AM21 SIRIUS Magnetic Contactor Coil 208V AC, 50/60Hz, Size S0, Spare Part Original Brand New

Overview

The Siemens 3RT2926-5AM21 is a genuine SIRIUS line magnetic coil designed as a direct spare part for a range of Siemens 3RT2 series power contactors, primarily size S0. This specific coil is engineered for operation on a control supply voltage of 208 V AC at both $\text{50 Hz}$ and $\text{60 Hz}$ frequencies.

It is an essential component for the reliable and safe electrical switching function of its compatible contactors in industrial control systems, ensuring the contactor opens and closes reliably to control motor loads or other equipment.

Technical Specification

• Product Number: 3RT2926-5AM21
• Brand: Siemens SIRIUS
• Product Type: Magnetic Coil (Solenoid Coil)
• Control Supply Voltage: $208\text{ V AC}$
• Frequency: $\text{50/60 Hz}$
• Contactor Compatibility: Designed for use with Siemens SIRIUS 3RT2 contactors including:
  • 3RT2325-.$A$
  • 3RT2.26-.$A$
  • 3RT2.27-.$A$
  • 3RT2028-.$A$
  • Typically compatible with Size S0 contactors.
• Function: Actuates the main contacts of the contactor.

Key Benefit

• Guaranteed Compatibility: A genuine Siemens spare part ensuring perfect fit and function with specified SIRIUS 3RT2 contactors.
• Restores Reliability: Replaces a failed or damaged coil to restore the proper switching function of your critical motor control circuit.
• Standard Industrial Voltage: Specifically rated for $208\text{ V AC}$ control systems, a common voltage in North American industrial applications.
• Dual Frequency: Suitable for both $\text{50 Hz}$ (global) and $\text{60 Hz}$ (North American) electrical systems.
• Minimizes Downtime: Quick and easy replacement of the coil reduces maintenance time and keeps your operations running smoothly.

Function

In a contactor, the 3RT2926-5AM21 magnetic coil converts electrical energy into mechanical motion. When $\text{208 V AC}$ control voltage is applied, the coil generates a powerful magnetic field, pulling the armature (moving part) to close the main power contacts. When the voltage is removed, the field collapses, and a spring forces the contacts open. This coil is the core actuator of the contactor’s switching mechanism.

Application

• Industrial Motor Control Centers (MCCs)
• HVAC Systems
• Pumping and Conveyor Systems
• Machinery and Equipment Control
• Replacement/Maintenance for $\text{208V}$ AC controlled Siemens 3RT2 contactors.

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