Siemens 3RT1054-1AV36 SIRIUS Power Contactor 3P 115A 55kW 380-420V AC

The Siemens 3RT1054-1AV36 (MLFB: 3RT1054-1AV36) is a SIRIUS series 3-pole power contactor rated at 115 A and 55 kW at 400 V under AC-3/AC-3e duty. It operates with an AC/DC coil voltage of 380-420 V (50-60 Hz) and features a 2 NO + 2 NC auxiliary contact arrangement, making it suitable for direct-on-line motor switching applications.

Technical specifications:

• MLFB: 3RT1054-1AV36
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Power contactor, type designation 3RT1
• Contactor size: S6
• Number of main poles: 3
• Rated current AC-3 (400 V): 115 A
• Rated current AC-1 (400 V, 40°C): 160 A
• Rated operational power AC-3 at 400 V: 55 kW
• Rated operational power AC-3 at 690 V: 110 kW
• Control (coil) voltage: 380-420 V AC (50-60 Hz) / DC
• Auxiliary contacts: 2 NO + 2 NC
• Main circuit terminal: box terminal
• Control/auxiliary circuit terminal: screw terminal
• Drive type: conventional
• Insulation voltage, main circuit: 1,000 V
• Insulation voltage, auxiliary circuit: 500 V
• Surge voltage resistance, main circuit: 8 kV
• Mechanical service life: 10,000,000 operating cycles
• No-load switching frequency: 2,000 1/h
• Power loss at AC rated current (hot state): 21 W
• Ambient operating temperature: -25 ... +60°C
• Storage temperature: -55 ... +80°C
• Maximum installation altitude: 2,000 m
• Net weight: 3.59 kg

Features and benefits:

• Size S6 frame supports high-current motor loads up to 115 A at AC-3 across 400-690 V
• Integrated 2 NO + 2 NC auxiliary contacts eliminate the need for a separate auxiliary switch block in most applications
• Box terminals on the main circuit allow fast, tool-friendly cable connection
• 10,000,000 mechanical operating cycles provide long service life in high-cycle installations
• Wide ambient temperature range (-25 ... +60°C) suits demanding industrial environments
• AC/DC coil flexibility enables use with both AC and DC control circuits at the same voltage rating

Applications:

• Direct-on-line starting and switching of three-phase motors up to 55 kW at 400 V
• Motor control centers and switchgear panels requiring high switching frequency
• Pump, fan, and compressor control in industrial automation systems
• Capacitor bank switching (AC-6a) up to 80 kVA at 400 V
• Applications requiring simultaneous main and auxiliary circuit control signaling

Compliant with EN/IEC 60947-4-1 for contactors and motor starters. Part of the Siemens SIRIUS 3RT1 range.

Also known as: Siemens 3RT1054-1AV36, SIRIUS 3RT1 power contactor 115A, Siemens S6 contactor 55kW.