Siemens 3RT1054-1PF35 Power Contactor 115A, AC-3 / 55 kW, 24V DC Original Brand New

Overview

The Siemens 3RT1054-1PF35 is a high-power, 3-pole power contactor from the SIRIUS family, designed for reliable switching and control of electric motors and other heavy loads up to 55 kW at 400V (AC-3e/AC-3). This advanced contactor features an electronic drive for low-power, wide-voltage operation and includes a PLC input (24V DC) for direct integration into modern automation systems. A key differentiating feature is the remaining lifetime signal (RLT), which enhances predictive maintenance by alerting operators to the contactor’s remaining service life, minimizing unexpected downtime.

Key Benefit

• High Reliability: Designed for long-term industrial use with a remaining lifetime signal for preventive maintenance.

• Versatile Operation: Supports AC (50–60 Hz) and DC applications with a wide voltage range (96–127 V).

• Compact and Efficient Design: 3-pole construction with electronic drive reduces wiring complexity.

• Enhanced Control: 1 NO + 1 NC auxiliary contacts for flexible integration with automation systems.

• Easy Installation: Box terminals for main circuits and screw terminals for control circuits simplify setup.

• Safety and Monitoring: Integrated remaining lifetime signal allows real-time performance monitoring.

Function

• Switching AC-3e/AC-3 loads up to 115 A

• Motor control up to 55 kW at 400 V

• PLC interface for 24 V DC control signals

• Auxiliary signaling with 1 NO + 1 NC contacts

• Electronic main circuit drive for reliable operation

• Maintenance monitoring through remaining lifetime signal

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