Siemens SIRIUS 3RT1056-2NP36 Power Contactor, 185A, 90kW, 200-277V AC/DC Electronic Coil, Size S6, 3-Pole Original Brand New

Overview

The Siemens 3RT1056-2NP36 Power Contactor from the SIRIUS 3RT1 series is a robust, high-performance switching device designed for controlling motors and other electrical loads up to 185 Amps (AC-3e/AC-3). This 3-pole contactor is rated for a motor output of 90 kW at 400 V and features a modern electronic operating mechanism. Its wide-range control supply voltage (200-277 V AC/DC) and integrated PLC input (24 V DC) make it ideal for flexible and efficient integration into modern industrial automation and control systems.

Key Features and Technical Specification

• Part Number: 3RT1056-2NP36
• Contactor Series: Siemens SIRIUS 3RT1
• Rated Operational Current (AC-3e/AC-3): 185 A
• Rated Power (400 V): 90 kW
• Number of Poles: 3-Pole
• Control Supply Voltage (Uc): 200-277 V AC/DC (Universal Coil)
• Drive Type: Electronic with high-efficiency
• PLC Compatibility: Integrated 24 V DC PLC input for direct control
• Auxiliary Contacts: 2 Normally Open (NO) + 2 Normally Closed (NC) integrated
• Main Circuit Connection: Busbar connection
• Control/Auxiliary Circuit Connection: Spring-loaded terminals (for fast, vibration-proof wiring)
• Contactor Size: Size S6

Benefit

• Maximum Reliability: The electronic drive ensures a wide operating voltage range, reducing coil-related failures and simplifying international use.
• Space & Cost Efficiency: The compact Size S6 design and high power rating (90 kW) save panel space compared to older contactor models.
• Fast, Secure Wiring: Spring-loaded terminals on the control and auxiliary circuits provide quick installation and a durable, maintenance-free connection, minimizing downtime.
• Direct PLC Integration: The dedicated 24 V DC PLC input allows for direct and easy interface with programmable logic controllers, simplifying complex control schemes.
• Versatile Power Connection: Busbar connections on the main circuit offer a robust and clean solution for high-current wiring in power distribution systems.
• Enhanced Diagnostics: The electronic drive provides better control and diagnostic capabilities compared to conventional AC/DC coils.

Function and Application

The 3RT1056-2NP36 power contactor is the essential component for switching high-power loads in various industrial applications. It is primarily used for:

• Starting and stopping large three-phase AC motors (DOL – Direct On Line).
• Switching high-current loads in heating, lighting, and power factor correction systems.
• Serving as the actuator in safety-related motor shutdown circuits.

Its high performance, versatility, and advanced electronic features make it a top choice for demanding industries like manufacturing, heavy machinery, process control, and building automation.

For more industrial automation products and components, including Siemens SIRIUS motor starters, circuit breakers, and relays, visit Turll today!