Home › Manufacturers › Siemens › 3RP2574-2NM20

Siemens

Siemens 3RP2574-2NM20 Electronic Star-Delta Time Relay Push-In

Siemens 3RP2574-2NM20 Electronic Star-Delta Time Relay, 1-20s delay, Push-In.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RP2574-2NM20

Function Star-Delta (Wye-Delta)

Delay Time 1-20 s

Contacts 1 NO Delayed, 1 NO Instantaneous

Voltage 200-240 V AC and 380-440 V AC

Get a price for 3RP2574-2NM20

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Star-Delta Motor Starting Function Single Adjustable Time Range (1-20s) Delayed and Instantaneous Contacts Push-In Spring Terminals Dual Voltage Operation LED Status Indicator

Product description

The Siemens 3RP2574-2NM20 is an electronic time relay featuring a star-delta (wye-delta) starting function for three-phase motors. It offers a single time range for the transition delay, set between 1 and 20 seconds. This relay provides 1 delayed normally open (NO) contact and 1 instantaneous normally open (NO) contact. It is designed to operate on 200-240V AC or 380-440V AC power and utilizes spring-type (push-in) terminals for quick installation. An LED indicator displays the relay status.

This star-delta timing relay is specifically engineered for applications involving large three-phase motors where precise and rapid transition timing is required. It's commonly used in HVAC systems, industrial machinery, pump controls, and fan applications to reduce starting current and mechanical stress.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3RP2574-2NM20. Trust Stanlo for reliable and efficiently sourced components to keep your operations running.

Technical specifications

Function	Star-Delta (Wye-Delta)
Delay Time	1-20 s
Contacts	1 NO Delayed, 1 NO Instantaneous
Voltage	200-240 V AC and 380-440 V AC
Terminal Type	Spring-type (Push-in)
LED Indicator	Yes

Common applications

HVAC Systems

Industrial Machinery

Pump Controls

Fan Applications

Motor Control Panels

Automation Equipment

Compatible systems

Suitable for use with three-phase motors and compatible with control systems that provide the specified AC voltage ranges and utilize push-in terminal connections.

Also known as

Siemens Time Relay 3RP2574-2NM20 3RP25742NM20 Siemens Star Delta Siemens 7LF4101-1PA00 (similar functionality)

Replaces / compatible with

This relay is designed to replace older Siemens star-delta timing relays that feature push-in terminals and specific voltage ranges. It offers a quick-connect solution for motor control applications.

Technical note

Expert tip

The push-in terminals simplify installation and maintenance, especially in control panels where space and accessibility can be challenging.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What voltage ranges does the Siemens 3RP2574-2NM20 star-delta time relay support?

The Siemens 3RP2574-2NM20 star-delta time relay supports two distinct voltage ranges: 200-240V AC and 380-440V AC. This dual voltage capability makes it adaptable to various industrial power supply configurations.