Siemens 3RT2035-3NB34-3MA0 Power Contactor, 41A, 18.5kW, 400V, 3-Pole, 2 NO + 2 NC Auxiliary Contacts Original Brand New

Overview

The Siemens 3RT2035-3NB34-3MA0 is a high-performance power contactor from the trusted SIRIUS 3RT2 series, engineered for reliable switching of electrical motors and circuits. This robust 3-pole device is rated for AC-3e/AC-3 operation at 41 A and 18.5 kW at 400 V, making it an ideal solution for a wide range of industrial applications.

Its compact size (S2) and versatile terminal options—screw terminals for the main circuit and spring-loaded terminals for control and auxiliary circuits—ensure flexible and secure installation. The integrated varistor provides superior surge protection, extending the lifespan of the contactor and connected equipment.

Benefit

• Enhanced Safety and Reliability: Integrated varistor protects against voltage spikes, ensuring a long and reliable service life.
• Flexible Connectivity: Combination of screw and spring-loaded terminals allows for quick and easy wiring of the control circuit while maintaining a secure connection for the main power circuit.
• Space-Saving Design: The compact S2 size is perfect for control cabinets with limited space.
• Wide Application Range: Suitable for both AC and DC control circuits with a broad voltage range of 20-33 V AC/DC.
• Comprehensive Auxiliary Control: Features a generous 2 normally open (NO) and 2 normally closed (NC) captive auxiliary switch for complex control and monitoring functions.

Function

The Siemens 3RT2035-3NB34-3MA0 power contactor is designed to perform the following key functions:

• Switching Motors: Controls the on/off state of electric motors in various industrial processes.
• Load Management: Efficiently handles heavy current loads up to 41 A.
• Circuit Protection: The integrated varistor absorbs and dissipates transient overvoltages, protecting sensitive components.
• Signal and Control Integration: The 2 NO + 2 NC auxiliary contacts provide signals for system status and enable interlocking mechanisms.
• Remote Operation: Can be controlled remotely via the 20-33 V AC/DC coil voltage.

Technical Specification

• Product Number: 3RT2035-3NB34-3MA0
• Rated Operational Current (AC-3e/AC-3): 41 A
• Rated Operational Power (AC-3): 18.5 kW at 400 V
• Number of Poles: 3-pole
• Control Voltage: 20-33 V AC/DC, 50/60 Hz
• Integrated Protection: Varistor for surge suppression
• Auxiliary Contacts: 2 NO + 2 NC (captive auxiliary switch)
• Main Circuit Terminals: Screw terminal
• Control & Auxiliary Circuit Terminals: Spring-loaded terminal
• Size: S2
• Series: SIRIUS 3RT2

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