Siemens 3RT2038-3NB34-3MA0 SIRIUS 3RT2 Power Contactor, 80A, 37kW, AC/DC 20-33V, Screw/Spring-Loaded Terminals, Size S2 Original Brand New

Overview: Siemens 3RT2038-3NB34-3MA0 Power Contactor

The Siemens 3RT2038-3NB34-3MA0 is a high-performance, 3-pole SIRIUS 3RT2 Power Contactor designed for reliable switching of motors and electrical loads up to 80 A and 37 kW at 400 V (AC-3e/AC-3). Part of the SIRIUS modular system, this size S2 contactor is engineered for industrial automation, offering exceptional durability and operational efficiency. It features a wide-range 20-33 V AC/DC control voltage for flexible integration into various control circuits.

Key Features & Function

• High Performance: Rated for 80 A and 37 kW / 400 V, making it suitable for demanding motor control applications.
• Flexible Control Voltage: Operates on a broad 20-33 V AC/DC control voltage at 50/60 Hz, simplifying inventory and system design.
• Integrated Varistor: Includes an integrated varistor for effective coil suppression, ensuring superior surge protection and increasing the contactor’s lifespan by protecting the control circuit.
• Dual-Terminal Technology: The main circuit utilizes robust screw terminals for secure power connections, while the control and auxiliary circuits feature fast, vibration-resistant spring-loaded terminals for quick and reliable wiring (saves time and maintenance).
• Auxiliary Contacts: Pre-equipped with a captive auxiliary switch block: 2 Normally Open (NO) + 2 Normally Closed (NC) contacts, providing essential feedback and interlock capabilities.
• Compact Size: Size S2 footprint for efficient use of panel space in control cabinets.

Benefit

• Maximized Uptime: High reliability and contact integrity for long service life, reducing maintenance costs and unexpected downtime.
• Simplified Wiring: The combination of screw and spring-loaded terminals offers the best of both worlds: high-power reliability and fast, maintenance-free control wiring.
• Control System Protection: The integrated varistor minimizes electrical noise and transient voltages, protecting sensitive PLC outputs and other control components.
• Compliance & Safety: Designed according to IEC and UL/CSA standards, ensuring global applicability and safety compliance (e.g., IE3/IE4 ready).
• Seamless Integration: Part of the comprehensive Siemens SIRIUS system, allowing for easy, factory-tested integration with other switching, protection, and monitoring devices

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