Siemens 3RT2018-1BP42 SIRIUS Power Contactor, 16A, 7.5kW, 230V DC Coil, Size S00, 3-Pole, 1 NC Aux, Screw Terminal Original Brand New

Overview

The Siemens 3RT2018-1BP42 is a high-performance, compact power contactor from the globally recognized SIRIUS 3RT20 series, specifically engineered for reliable switching of motors and electrical loads up to 16 Amperes (AC-3e/AC-3). This 3-pole contactor is rated for 7.5 kW at 400 V and features a 230V DC control coil for direct current control applications. Its ultra-compact Size S00 design saves valuable panel space, and it comes standard with one normally closed (1 NC) auxiliary contact integrated, along with robust screw terminals for secure and easy wiring.

Key Benefit

• Space-Saving Design: Ultra-compact Size S00 form factor minimizes cabinet footprint.
• High Performance: Reliable switching capacity for motors up to 7.5 kW (at 400V) and general loads up to 16 A.
• DC Control Versatility: Features a 230V DC coil, ideal for direct current control systems, ensuring predictable and low-noise operation.
• Integrated Auxiliary Contact: Built-in 1 NC auxiliary contact simplifies wiring for control and signaling functions like interlocking.
• Robust Connection: Secure and field-proven screw terminals for main and auxiliary circuits ensure a safe, long-lasting electrical connection.
• Part of the SIRIUS Modular System: Seamless compatibility with a wide range of Siemens SIRIUS accessories, such as overload relays and auxiliary switch blocks, for building complete motor starters.

Function

The Siemens 3RT2018-1BP42 contactor is an electromechanical switching device used to reliably make and break an electrical power circuit, typically for controlling 3-phase AC motors and other demanding resistive or inductive loads. The 230 V DC coil controls the switching operation, making it suitable for integration into DC-based control systems and low-voltage panels.

Application

• Direct-on-line (DOL) motor starters.
• Switching of heating systems, lighting, and general industrial loads.
• Integration into HVAC and conveyor systems.
• Control panels in industrial automation and machinery.
• Reversing contactor assemblies (with an interlocking partner).

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