Siemens 3RT2025-2BB40 SIRIUS Power Contactor, 17A, 7.5kW, 24V DC Coil, 3-Pole, Size S0, Spring-Loaded Terminal Original Brand New

Overview

The Siemens 3RT2025-2BB40 SIRIUS Power Contactor is a high-performance, 3-pole switching device designed for motor and load control in industrial automation applications. As a core component of the SIRIUS modular system, this size S0 contactor is engineered for efficiency, reliability, and compact design. It features a robust 24V DC coil for reliable operation and spring-loaded terminals for fast, vibration-proof, and maintenance-free wiring, making it ideal for high-vibration environments and modern control panel construction.

Benefit

• Fast, Secure Wiring: Spring-loaded terminals dramatically reduce wiring time and ensure a permanently stable connection, even in high-vibration applications.
• Space-Saving Design: Part of the compact SIRIUS modular system, the S0 size optimizes control cabinet space.
• High Reliability: Designed for AC-3e/AC-3 switching of motors, compatible with high-efficiency IE2/IE3/IE4 motors, offering excellent contact reliability and a long mechanical service life (typically 10 million operating cycles).
• DC Coil Efficiency: The 24V DC control provides quiet operation and a wide operating voltage range, often preferred in modern automation systems.
• Integrated Auxiliary Contacts: The built-in $1\text{ NO}+1\text{ NC}$ auxiliary contacts simplify wiring and are essential for signaling and interlocking circuits.

Function / Application

The Siemens 3RT2025-2BB40 Power Contactor is used to remotely switch and control electric loads, primarily:

1. Motor Switching: Starting, stopping, and controlling three-phase AC motors up to 7.5 kW / 17 A.
2. Load Control: Switching of resistive loads, heating, and lighting circuits in industrial environments.
3. Integration: Ideal for use in motor starter combinations (direct or reversing starters) alongside SIRIUS 3RV2 motor protection circuit breakers and 3RU2 thermal overload relays.
4. Automation Systems: Suitable for low-voltage control and distribution panels in various industries, from machinery and plant construction to HVAC and material handling.

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