Description
Siemens 3RT2037-1AC20 IEC Motor Contactor
The Siemens 3RT2037-1AC20 is a heavy-duty IEC-rated motor contactor engineered for reliable switching of three-phase loads in commercial and industrial HVAC and motor control applications. Rated at 65 amps with a 24V AC control coil, this contactor delivers dependable performance in demanding environments where precise motor management is essential.
Key Features
- 65A main contact current rating for robust load switching capability
- 24V AC control coil voltage for safe, low-voltage control circuit integration
- Screw terminal connections for secure, vibration-resistant wiring
- Integrated 1NO/1NC auxiliary contact block for control circuit feedback and interlocking
- IEC-rated design for compact footprint and international compatibility
- Part of the Siemens 3RT2 contactor series — a proven platform for motor control centers and panel boards
- Suitable for three-phase motor loads, HVAC compressors, fans, and pump applications
Specifications
- SKU: 3RT2037-1AC20
- Brand: Siemens
- Main Contact Rating: 65A
- Control Coil Voltage: 24V AC
- Terminal Type: Screw
- Auxiliary Contacts: 1 Normally Open (1NO) / 1 Normally Closed (1NC)
- Series: 3RT2
- Contact Configuration: 3-pole main contacts with integrated auxiliary
Applications
- Commercial HVAC compressor and motor control
- Motor control centers (MCC) and panel boards
- Fan and pump motor switching
- Industrial automation and building automation systems
- Refrigeration and chiller plant control panels







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