Siemens 3RT1456-6AT36 Power Contactor 3-Pole, AC-1, 275 A, 690 V Original Brand New

Overview

The Siemens 3RT1456-6AT36 is a high-capacity 3-pole power contactor engineered for demanding industrial switching applications. With an impressive AC-1 operational current of 275 A, rated voltage of 690 V, and optimal performance at 40 °C, this device ensures reliable and efficient control of electrical loads. Designed for versatility, it supports Uc: 575–600 V AC (50–60 Hz) operation and includes conventional DC drive capability.

Built with 2 NO + 2 NC auxiliary contacts, busbar main circuit connections, and screw terminal control wiring, the Siemens 3RT1456-6AT36 provides outstanding performance, ease of installation, and long-term durability essential for modern industrial systems.

Benefit

• High Current Capacity – Supports heavy-duty loads up to 275 A, ideal for industrial environments.

• Enhanced Reliability – Siemens’ proven design ensures stable performance under continuous operation.

• Flexible Voltage Compatibility – Wide control voltage range 575–600 V AC for diverse systems.

• Easy Installation & Maintenance – Features screw terminals and a user-friendly layout.

• Versatile Auxiliary Contacts – Includes 2 Normally Open + 2 Normally Closed contacts for expanded control configurations.

• Robust Build Quality – Engineered to deliver long service life even in harsh operating conditions.

Functions & Features

Electrical and Mechanical Features

• Type: Power Contactor

• Poles: 3-pole

• Operational Current (AC-1): 275 A

• Rated Voltage: 690 V

• Rated Temperature: 40 °C

• Control Voltage (Uc): 575–600 V AC (50–60 Hz)

• Drive Type: Conventional AC/DC drive

Connections

• Main Circuit: Busbar connection

• Control & Auxiliary Circuit: Screw terminal

Auxiliary Contacts

• 2 NO (Normally Open)

• 2 NC (Normally Closed)

Application

The 3RT1456-6AT36 is primarily used for switching resistive loads (AC-1) across various industrial applications, including:

• Controlling large heating elements and furnaces.

• Switching industrial lighting systems.

• General power distribution in machinery and large panels.

• Creating highly reliable three-phase load circuits.

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