Siemens Sirius 3RT 32 Amp 3 Pole 24V DC Power Contactor 3RT2027-1KB40
The Siemens 3RT2027-1KB40 is a specialized 3-pole coupling contactor from the SIRIUS 3RT2 series. It is engineered specifically to interface medium-power electric motors directly with electronic control systems, such as Programmable Logic Controllers (PLCs), without intermediate relays.
Product Specification:
- Contactor Type: 3-Pole Power Contactor (3 Normally Open Main Contacts)
- Size: S0 (Standard compact footprint)
- Control Coil Voltage: 24V DC (Operates efficiently between 0.7 to 1.25* Uc)
- Power Rating (AC-3 / AC-3e): 15 kW at 400V [1, 2]
- Operating Current Rating:
- 32 Amps for inductive motor loads (AC-3 / AC-3e at 400V)
- 50 Amps for non-inductive/resistive loads (AC-1 at 400V)
- Integrated Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
- Terminal Type: Conventional screw terminals
- Surge Suppression: Built-in, factory-installed varistor to protect upstream electronics from voltage spikes.
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