Siemens 3RT2028-2AN20 Power Contactor SIRIUS Size S0, 38A, 18.5kW, 220V AC Coil, Spring-Loaded Original Brand New

Overview

The Siemens 3RT2028-2AN20 is a highly efficient power contactor from the SIRIUS family, designed for switching three-phase motors and other general loads. Classified as Size S0, it provides a high power density for its compact footprint. This 3-pole contactor is rated for $38\text{ A}$ (AC-3e/AC-3) and $18.5\text{ kW}$ at $400\text{ V}$.

It features a standard $220\text{ V AC}$ coil for control circuit integration and includes built-in $1\text{ NO }+1\text{ NC}$ auxiliary contacts. A key feature is the use of spring-loaded terminals for all connections, which ensures fast, simple, and vibration-proof wiring, minimizing maintenance time.

Key Benefit

• High Performance in a Compact Size: Size S0 offers $38\text{ A}$ switching capability, saving valuable panel space.
• Reliable Motor Control: Rated for $18.5\text{ kW}$ at $400\text{ V}$, ideal for mid-range industrial motor applications.
• Fast, Secure Wiring: Spring-loaded terminals drastically cut down wiring time and provide a gas-tight, reliable connection that is resistant to vibration.
• Integrated Control Contacts: Comes standard with $1\text{ NO }+1\text{ NC}$ auxiliary contacts, simplifying circuit design and reducing the need for add-on blocks.

Application

The Siemens 3RT2028-2AN20 contactor is the perfect choice for:

• Switching and controlling mid-size pumps, fans, and conveyor systems.
• Integration into motor starters (direct-on-line or reversing).
• Applications requiring vibration-proof and fast-wired connections, such as in machine tools or mobile equipment.

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