Siemens 3RT7025-1AH25 Contactor, AC-3 18A/7.5kW, 400V, 48V AC Coil, S0 Size, Screw Terminal Original Brand New

Overview

The Siemens 3RT7025-1AH25 is a high-performance power contactor designed for reliable switching of electric motors. As part of the SIRIUS 3RT series, this contactor is engineered for robust industrial applications, offering exceptional longevity and operational stability. With an AC-3 rating of 18A at 400V (7.5kW), it is perfectly suited for a wide range of motor control and general-purpose switching tasks. Its compact size S0 design saves valuable panel space, while the standard screw terminals ensure secure and straightforward wiring.

Key Features & Specification

• Product Number: Siemens 3RT7025-1AH25
• Type: Power Contactor for Motor Control
• Performance:
  • AC-3 Rating: 18A at 400V
  • Motor Power: 7.5kW at 400V
• Coil Voltage: 48V AC, 50/60Hz
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Size: S0 (Compact and space-saving)
• Connection Type: Screw terminals for reliable and easy wiring
• Application: Ideal for switching electric motors, resistive loads, and general-purpose switching in industrial automation and control systems.

Benefit

• High Reliability: Built with Siemens’ renowned quality, ensuring long-term performance and minimizing downtime.
• Space-Saving Design: The compact S0 size allows for high-density installations in control cabinets.
• Versatile Application: Suitable for a broad range of motor control and industrial switching needs.
• Easy Installation: Standard screw terminals simplify wiring and installation, reducing labor costs.
• Enhanced Safety: Includes 1NO and 1NC auxiliary contacts for monitoring and interlocking circuits, improving operational safety.
• Global Standard: Complies with international standards, making it suitable for use in diverse industrial environments worldwide.

Function

The Siemens 3RT7025-1AH25 functions as an electromagnetically operated switching device. When the 48V AC control voltage is applied to the coil, it creates a magnetic field that closes the main power contacts, allowing current to flow to the connected motor. The integrated auxiliary contacts (1NO + 1NC) change state simultaneously, providing feedback signals to the control system or enabling interlocking functions. This mechanism ensures precise and reliable control over electrical loads.

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