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Siemens 3RT1055-6NB36 Power Contactor - 150A, 75kW

Siemens 3RT1055-6NB36 3-pole power contactor.

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ManufacturerSiemens

Part number3RT1055-6NB36

AC-3e/AC-3 rating 150 A

Power 75 kW @ 400 V AC

Coil Voltage 21-27 V DC PLC input

Poles 3

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AC-3e/AC-3 rated for motor control 150A continuous current 75kW power handling Electronic coil for PLC input 24V DC coil voltage 2 NO + 2 NC auxiliary contacts

Product description

The Siemens 3RT1055-6NB36 is a 3-pole power contactor designed for AC-3e/AC-3 applications, handling up to 150A and 75kW at 400V AC. It features a 24V DC PLC input, electronic drive, and is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts. The main circuit utilizes busbar connections, while the control and auxiliary circuits use screw terminals.

This contactor is ideal for motor control, power switching, and various industrial automation applications across sectors such as manufacturing, material handling, and building systems. Its robust design ensures reliable operation in demanding environments.

As a veteran-owned surplus parts distributor, Stanlo Automation offers a reliable source for hard-to-find industrial components like the Siemens 3RT1055-6NB36. We provide quality parts with prompt shipping to minimize your downtime.

Technical specifications

AC-3e/AC-3 rating	150 A
Power	75 kW @ 400 V AC
Coil Voltage	21-27 V DC PLC input
Poles	3
Auxiliary Contacts	2 NO + 2 NC
Main Circuit Terminals	Busbar
Control Circuit Terminals	Screw
Drive Type	Electronic

Common applications

Motor starting and stopping

Load switching

Industrial control panels

Power distribution

HVAC systems

Conveyor systems

Compatible systems

PLCs with 24V DC output Control systems requiring 150A switching capacity

Also known as

Siemens SIRIUS 3RT1055 3RT1055 Power Contactor 150A

Replaces / compatible with

This part is a specific configuration of the Siemens 3RT10 series. Always verify exact specifications for direct replacement needs.

Technical note

Expert tip

Ensure proper busbar connection torque and insulation is maintained when installing this contactor to prevent overheating and ensure safety.

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Frequently asked questions

What is the coil voltage for the Siemens 3RT1055-6NB36?

The Siemens 3RT1055-6NB36 features a 24V DC PLC input with a coil voltage range of 21-27V DC. This allows for direct integration with programmable logic controllers for precise control.