Siemens 3RT2025-1BG40 SIRIUS Power Contactor 17A, 7.5kW, 400V, 125V DC Coil, Size S0 Original Brand New

Overview

The Siemens 3RT2025-1BG40 is a high-performance 3-pole power contactor from the industry-leading SIRIUS 3RT2 series, specifically engineered for switching and controlling three-phase motors and other loads. This compact contactor (Size S0) is designed for reliable operation in demanding industrial environments, compliant with AC-3e/AC-3 operational categories.

It features a powerful 125V DC control coil, making it ideal for integration into low-voltage DC control circuits. The base unit includes integrated 1 NO + 1 NC auxiliary contacts for simple signaling and interlocking.

Key Features & Benefits

• High Performance: Reliable switching of motor loads up to 7.5 kW (400 V) and a maximum operational current of 17 A (AC-3e/AC-3).
• Optimized Installation: Compact Size S0 design and user-friendly screw terminals simplify installation and wiring in control panels.
• Versatile Control: Equipped with a 125V DC coil for integration into various industrial control systems.
• Integrated Signaling: Base unit includes 1 NO and 1 NC auxiliary contacts for immediate feedback and safety circuit integration.
• Enhanced Durability: Part of the Siemens SIRIUS family, ensuring high mechanical and electrical endurance for a long service life.

Function / Application

The 3RT2025-1BG40 power contactor is primarily used for:

1. Motor Switching: Starting and stopping 3-phase AC motors (direct-on-line starting).
2. Load Control: Switching resistive, capacitive, and inductive loads in industrial automation systems.
3. Pump and Fan Control: Ideal for use in HVAC, fluid, and air handling applications.
4. Integration: Works seamlessly with SIRIUS thermal overload relays and accessories to create complete motor starter solutions.

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