Siemens 3RP1574-1NM20 Electronic Star-Delta Timing Relay
Siemens 3RP1574-1NM20 Electronic Star-Delta Timing Relay.
The Siemens 3RP1574-1NM20 is an electronic timing relay specifically designed with a star-delta (wye-delta) function for motor starting applications. It provides one delayed normally open (NO) contact and one instantaneous normally open (NO) contact. The relay features a single time range adjustable from 1 second to 20 seconds, which is used for the star-to-delta transition delay. It operates on 200-240V AC and 380-440V AC supply voltages and uses screw terminals for connection.
This timing relay is crucial for reducing starting current and torque shock when starting three-phase induction motors. Its star-delta function ensures a smooth transition from star to delta configuration, protecting the motor and the power supply system.
Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3RP1574-1NM20. We provide reliable and cost-effective solutions, ensuring you get the quality components you need to maintain your industrial operations.
| Type | Electronic Star-Delta Timing Relay |
| Contacts | 1 Delayed NO, 1 Instantaneous NO |
| Time Range | 1 s - 20 s |
| Supply Voltage | 200-240 V AC, 380-440 V AC |
| Function | Star-Delta (Wye-Delta) |