Siemens 3RT2027-1AP04 Power Contactor 3P 32A 15kW 230VAC 2NO+2NC

The Siemens 3RT2027-1AP04 is a 3-pole SIRIUS power contactor rated at 32 A and 15 kW at 400 V under AC-3/AC-3e duty. It operates from a 230 V AC, 50 Hz control coil and includes a removable 2 NO + 2 NC auxiliary switch block with screw terminals, in size S0.

Technical specifications:

• MLFB: 3RT2027-1AP04
• Manufacturer: Siemens
• Product line: SIRIUS
• Type designation: 3RT2
• Size: S0
• Number of poles: 3
• Main contacts: 3 NO
• Auxiliary contacts: 2 NO + 2 NC (removable)
• Rated current AC-3 at 400 V: 32 A
• Rated current AC-1 at 400 V (40°C): 50 A
• Operating power AC-3 at 400 V: 15 kW
• Operating power AC-3 at 690 V: 18.5 kW
• Control voltage: 230 V AC, 50 Hz
• Control voltage operating range: 0.8 - 1.1 x rated value
• Apparent pick-up power (50 Hz): 77 VA
• Apparent holding power (50 Hz): 9.8 VA
• Insulation voltage (main and auxiliary circuit): 690 V
• Surge voltage resistance: 6 kV
• Terminal type: Screw terminal
• Operating temperature: -25 ... +60°C
• Storage temperature: -55 ... +80°C
• Installation altitude: max 2,000 m
• Mechanical service life: 10,000,000 operating cycles
• No-load switching frequency: 5,000 1/h
• Operating frequency AC-3: max 750 1/h

Features and benefits:

• Removable 2 NO + 2 NC auxiliary switch block allows flexible signalling without additional wiring components
• Wide operating temperature range of -25 ... +60°C suits demanding panel environments
• Mechanical service life of 10,000,000 operating cycles reduces planned maintenance intervals
• Insulation voltage of 690 V and surge voltage resistance of 6 kV provide protection across a wide voltage range
• Control voltage operating range of 0.8 - 1.1 x rated ensures reliable pick-up under supply fluctuations
• Size S0 footprint with screw terminals simplifies integration into standard DIN rail enclosures

Applications:

• Motor starting and stopping in industrial machinery under AC-3/AC-3e duty
• Pump and fan motor control in HVAC and water treatment installations
• Switching resistive loads at AC-1 rated currents up to 50 A at 400 V
• Capacitor bank switching under AC-6a conditions up to 690 V
• Motor starter combinations within industrial control panels

Compliant with EN 60947-1. Part of the Siemens SIRIUS 3RT2 range.

Also known as: Siemens 3RT2027-1AP04, SIRIUS 3RT2 power contactor S0.