Siemens 3RT2545-1NP30 Power Contactor AC-3, 80A, 37kW, 4-Pole with Integrated Varistor Original Brand New

Overview

The Siemens SIRIUS 3RT2545-1NP30 is a high-performance 4-pole power contactor specifically engineered for switching resistive and low-inductive loads (AC-3 category). Part of the trusted Siemens SIRIUS modular system, this size S3 contactor provides robust and reliable switching capability for your industrial applications, particularly where four main poles are required. Its wide-range 175-280V AC/DC operating coil ensures flexibility and stable operation across various control voltages, while the integrated varistor offers essential surge protection for the coil.

Key Features and Specification

• Product Number: 3RT2545-1NP30

• Contactor Size: S3

• Operating Category: AC-3

• Current Rating (AC-3): 80 A

• Power Rating (400 V): 37 kW

• Number of Poles: 4-pole (Main contacts: 2 NO + 2 NC)

• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)

• Control Voltage (Coil): 175-280 V AC/DC, 50/60 Hz

• Protection: Integrated varistor for coil surge damping

• Connection Type: Reliable Screw Terminal connections

Benefit

• Exceptional Versatility: The 4-pole configuration (2 NO + 2 NC) allows for simultaneous control of different circuits or phases, ideal for complex switching tasks.

• Wide Voltage Range: The 175-280 V AC/DC coil simplifies inventory and allows for flexible application across various international or specialized control systems.

• Increased Durability: The integrated varistor protects the control circuit from harmful voltage spikes, extending the lifespan of the contactor and associated components.

• Simplified Installation: Secure screw terminals ensure a robust and maintenance-friendly electrical connection.

• Space-Saving Design: As a size S3 contactor, it delivers high-current switching in a standardized, compact form factor, maximizing panel space.

Applications/Function

The 3RT2545-1NP30 is primarily used in industrial and commercial settings for:

• Switching AC-3 loads: Specifically for resistive loads, heating elements, or low-inductive loads. Note: For standard motor switching (AC-3), the 3RT2 contactors are also highly suitable.

• Complex Circuit Control: Ideal for applications requiring simultaneous opening and closing of multiple lines (e.g., controlling 4 separate lines in a process, or specific switching arrangements).

• Power Distribution: Serving as a main switch or isolation device in control panels.

• HVAC and Automation Systems: Reliable switching in demanding environments.

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