Siemens SIRIUS 3RT2024-2NB30 Power Contactor, 12A, 5.5kW, Size S0, 21-28V AC/DC Spring-Loaded Terminal Original Brand New

Overview: Siemens SIRIUS 3RT2024-2NB30 Power Contactor

The Siemens 3RT2024-2NB30 is a high-performance, 3-pole power contactor from the globally recognized SIRIUS 3RT2 series. Designed for switching motors and general electrical loads, this reliable and compact device operates on a wide control voltage range of 21-28 V AC/DC. It is a Size S0 contactor, rated for an operational current (Ie​) of 12 A (AC-3e/AC-3) and a power rating of 5.5 kW at 400 V.

A key feature is the modern spring-loaded terminal system, which ensures fast, vibration-proof, and maintenance-free wiring. It also comes equipped with integrated surge suppression (varistor) for enhanced coil protection and two essential auxiliary contacts (1 NO + 1 NC) built into the base unit.

Benefit

• Reliable & Long-Lasting: Part of the SIRIUS family, engineered for high mechanical and electrical endurance (up to 10 million operating cycles).
• Fast, Secure Wiring: Spring-loaded terminals allow tool-free, secure connection, reducing installation time and minimizing wiring errors.
• Coil Protection Included: The integrated varistor protects the control circuit from voltage peaks, increasing the coil’s lifespan and reducing external component costs.
• Global Application: Suitable for worldwide use, being climate-proof and finger-safe (IP20 protection against accidental contact).
• Wide Voltage Flexibility: The 21-28 V AC/DC control voltage allows for universal use in low-voltage control systems, whether AC or DC powered.

Function

The Siemens 3RT2024-2NB30 power contactor is primarily used for switching and controlling electric motors and general electrical loads. It operates by drawing a low current through its control coil to open or close the main power circuit, facilitating remote or automated operation of machinery. Its use is essential in motor control, machine tool control, and various industrial automation applications.

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