Siemens 3RT1055-2AP36 Power Contactor 150A, 75kW / 400V AC, 3-Pole with Auxiliary Contacts Original Brand New

Overview

The Siemens 3RT1055-2AP36 power contactor is engineered for reliable switching of motors and heavy electrical loads in industrial environments. Designed to handle AC-3/AC-3e duty cycles, this 150 A contactor can manage up to 75 kW at 400 V AC, ensuring high efficiency and long-term durability. With a 3-pole main circuit and versatile auxiliary contacts, it offers precise control and enhanced safety for electrical systems.

Key Features & Function

• Rated current: 150 A (AC-3 / AC-3e)

• Rated operational power: 75 kW at 400V AC

• Poles: 3-pole main circuit

• Auxiliary contacts: 2 NO + 2 NC

• Drive type: Conventional

• Main circuit connection: Busbar

• Auxiliary circuit connection: Spring-loaded terminal

• Voltage control range: DC/AC Uc 220-240V

• Frequency: 50–60 Hz

Benefit

• Reliable Performance: Designed for heavy-duty AC and DC applications.

• Enhanced Control: Auxiliary contacts allow precise monitoring and switching.

• Durable Construction: High-quality Siemens engineering ensures long-term reliability.

• Easy Installation: Busbar main circuit and spring-loaded auxiliary connections simplify wiring.

• Versatile Applications: Suitable for motor starters, industrial machinery, and automation systems.

Application

The Siemens 3RT1055-2AP36 power contactor is designed to safely and reliably switch the main current circuit in motor control applications. It acts as the switching element in a motor starter combination, typically paired with a motor starter protector and an overload relay.

Ideal for:

• Starting and stopping standard 3-phase asynchronous motors.
• Use in motor control centers (MCCs) for medium to high-power industrial machinery.
• Controlling pumps, fans, conveyors, and various machine tools in a diverse range of industries.

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