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Siemens 3RT1054-1AB36 115A Power Contactor

Siemens 3RT1054-1AB36 115A 3-pole power contactor with 23-26V DC coil.

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ManufacturerSiemens

Part number3RT1054-1AB36

Type Power Contactor

Poles 3-pole

AC-3e/AC-3 Rating 115 A

Power Rating 55 kW / 400 V

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115A current rating 55kW power handling 23-26V DC coil 3-pole configuration 2 NO + 2 NC auxiliary contacts Box main terminals

Product description

The Siemens 3RT1054-1AB36 is a high-capacity 3-pole power contactor rated for AC-3e/AC-3 duties at 115 Amps and 55 kW (400 V). It features a low-voltage DC coil operating at 23-26 VDC (Uc). This model includes 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, with main circuit connections using box terminals and control/auxiliary circuits using screw terminals.

This contactor is ideal for heavy-duty motor control and switching applications in industries such as chemical processing, water treatment, and manufacturing where precise DC control is required. Its robust construction ensures reliable operation in demanding environments.

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Technical specifications

Type	Power Contactor
Poles	3-pole
AC-3e/AC-3 Rating	115 A
Power Rating	55 kW / 400 V
Coil Voltage	23-26 V DC
Auxiliary Contacts	2 NO + 2 NC
Main Circuit Terminals	Box terminal
Control Circuit Terminals	Screw terminal
Series	SIRIUS 3RT1

Common applications

Motor control

Power distribution

Industrial machinery

Pump control

Compressor control

Fan control

Compatible systems

Compatible with Siemens SIRIUS 3RT overload relays and other accessories designed for this series.

Also known as

SIRIUS 3RT1054-1AB36 Siemens 115A DC Contactor

Replaces / compatible with

Designed as a replacement for or equivalent to other Siemens SIRIUS contactors with similar ratings and DC coil voltages.

Technical note

Expert tip

The integrated auxiliary contacts (2 NO + 2 NC) provide essential signaling and interlocking capabilities directly on the contactor.

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Frequently asked questions

What type of coil does the Siemens 3RT1054-1AB36 use?

The Siemens 3RT1054-1AB36 power contactor utilizes a DC coil with a voltage range of 23-26 VDC. This specification is important for ensuring proper activation and control of the contactor.