Siemens 3RT2037-1AP04 Power Contactor 3P 65A 30kW 230V AC Coil

The Siemens 3RT2037-1AP04 is a SIRIUS 3RT2 series 3-pole power contactor rated at 65 A (AC-3, 400 V) and 30 kW, designed for switching three-phase AC motor loads. It operates on a 230 V AC / 50 Hz control coil and includes an integrated 2 NO + 2 NC auxiliary contact block with screw terminals. Size S2 format with a removable auxiliary switch provides configuration flexibility in industrial control panels and switchgear.

Technical specifications:

• MLFB: 3RT2037-1AP04
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Power contactor (3RT2)
• Size: S2
• Poles: 3
• Rated current AC-3 at 400 V: 65 A
• Rated current AC-1 at 400 V (40°C): 80 A
• Operating power AC-3 at 400 V: 30 kW
• Operating power AC-3 at 500 V: 37 kW
• Control supply voltage: 230 V AC, 50 Hz
• Coil operating range: 0.8 - 1.1 x rated voltage
• Auxiliary contacts: 2 NO + 2 NC
• Terminal type: Screw terminal
• Insulation voltage (main and auxiliary circuit): 690 V
• Surge voltage resistance: 6 kV
• Operating temperature: -25 ... +60°C
• Storage temperature: -55 ... +80°C
• Installation altitude: max 2,000 m
• Mechanical service life: 10,000,000 operating cycles
• Net weight: 1.058 kg

Features and benefits:

• Removable auxiliary switch block allows flexible contact configuration without replacing the contactor
• 10 million mechanical operating cycles for long service life in high-cycle applications
• AC-3e utilization category supports energy-efficient motor starting and switching
• Coil operating range of 0.8 to 1.1 x rated voltage tolerates supply voltage fluctuations
• Maximum switching frequency of 700 operations per hour at AC-3 suits demanding duty cycles

Applications:

• Three-phase motor starting and stopping up to 30 kW at 400 V
• Industrial motor control panels and switchgear assemblies
• Pump, fan, and compressor motor control
• Conveyor systems and machinery drives

Compliant with EN/IEC 60947-4-1 for low-voltage contactors and switchgear. Part of the Siemens SIRIUS 3RT2 range.

Also known as: Siemens 3RT2037-1AP04, SIRIUS 3RT2 65 A power contactor.