Siemens Power contactor, 3-pole, 2NO + 2NC, 55kW / 400V, 115A Part number 3RT1054-6AP36

Product Overview

The Siemens 3RT1054-6AP36 is a heavy-duty 3-pole power contactor from the SIRIUS 3RT1 family, designed for reliable switching of three-phase motors and industrial loads. With a high AC-3 current rating of 115 A and a 220–240 V AC/DC control coil, this contactor provides robust performance in demanding automation and motor-control environments. It is engineered for long operating life, strong electrical endurance, and seamless integration with Siemens protection and control components.

Key Features

• Three-pole power contactor for industrial motor switching
• Rated operational current: 115 A (AC-3)
• Rated power capability up to 55 kW at 400 V AC
• Coil voltage: 220–240 V AC/DC
• Main contacts: 3 normally open (3 NO)
• Auxiliary contacts included: 2 NO + 2 NC for control and signalling
• High mechanical endurance suitable for millions of operations
• Insulation rating up to 1 000 V with surge resistance of 8 kV
• Rugged S6 frame size suitable for heavy industrial applications
• Wide ambient temperature operating range from –25 °C to +60 °C
• Screw-type terminal connections for secure wiring

Technical Specifications

• Article Number: 3RT1054-6AP36
• Product Series: Siemens SIRIUS 3RT1
• Contactor Size: S6
• Main Contacts: 3 NO (3-pole)
• Auxiliary Contacts: 2 NO + 2 NC
• Rated Operational Current (AC-3): 115 A
• Rated Motor Power (400 V AC): 55 kW
• Coil Voltage: 220–240 V AC/DC
• Insulation Voltage: 1 000 V
• Surge Voltage Resistance: 8 kV
• Mechanical Durability: Up to 10 million switching operations
• Electrical Durability: Rated for frequent AC-3 switching
• Operating Temperature: –25 °C to +60 °C
• Connection Type: Screw terminals
• Mounting: Suitable for panel or standard contactor mounting configurations

Compliance & Certifications

• Compliant with global IEC standards for motor control and switching
• Part of the SIRIUS modular system for coordinated protection and control
• Designed for industrial environments requiring high reliability and long service life

Applications

The Siemens 3RT1054-6AP36 is ideal for switching and controlling three-phase motors, heavy industrial loads, and machinery requiring dependable AC-3 performance. It is commonly used in pump systems, compressors, conveyors, HVAC equipment, manufacturing lines, and general industrial automation. With its high current rating, robust contacts, and auxiliary switching capability, it integrates seamlessly into motor starters, control panels, and automation systems.