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Siemens 3RP25 Series DIN Rail Timer Relay, 2-Contact, 250 V DC, 12-240 V AC, 1 to 20 s Delay, 1-Function, DPST 3RP2574-1NW30
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Siemens |
| Height | 100mm |
| Function | Valve |
| Length | 90mm |
| Model | 3RP2574-1NW30 |
| IP Rating | IP20 |
| Mode | Star-Delta |
| Width | 22.5mm |
| Mount Type | DIN Rail |
| Series | 3RP25 |
| Maximum Operating Temperature | 60°C |
| Contact Configuration | DPST |
| Minimum Operating Temperature | -25°C |
| Time Range | 1 to 20 s |
| Terminal type | Screw |
| Standards/Approvals | CSA, IEC, UL |
| Number of Contacts | 2 |
| Number of Timer Functions | 1 |
| Contact Current | 3A |
| Supply DC Voltage | 250 V dc |
| Supply AC Voltage | 12, 240V ac |
| Siemens Auxiliary Switch Block, 2 Contact, 2 NO, DIN, SIRIUS 3RT19262Brand | Siemens |
| Siemens Timer Relay, 200 → 240V, 2-Contact, 1 → 20s, 1-Function, SPDTBrand | Siemens |
Key Features
- DPST (Double Pole Single Throw) switch configuration for reliable current switching.
- Star-Delta mode reduces inrush current below 5A for safe motor startup.
- Wide operating temperature range from -25°C to 60°C ensures durability in varied conditions.
- Compatible with 50 and 60 Hz voltages, suitable for diverse power environments.
- Compact DIN rail mount with dimensions 22.5mm width, 90mm length, and 100mm height.
- Screw terminal type allows secure and easy wiring installation.
- Contact current rating of 3 A assures moderate load handling.
- Meets international standards including CSA, IEC, and UL approvals.
Product Description
Siemens 3RP2574-1NW30 timer relay is a DIN rail mount device designed for precise time control applications in electrical systems. It features a switch function with 2 contacts arranged in a DPST configuration, making it suitable for switching current between circuits with reliable operation over a time delay programmable from 1 to 20 seconds.
The relay supports supply voltages from 12 V to 240 V AC and up to 250 V DC, operating effectively on both 50 Hz and 60 Hz frequency sources. Its star-delta mode capability facilitates smooth starting of large electric motors by initially engaging a lower voltage circuit, minimizing inrush current to under 5 amps, which enhances the longevity and safety of connected equipment. The built-in 50 ms changeover time reduces the risk of short circuits between star and delta stages.
Constructed with a screw terminal interface and rated for a contact current of 3 A, this compact unit (22.5mm wide, 90mm long, 100mm high) is engineered to fit standard DIN rails seamlessly. It operates reliably within a temperature range of -25°C to 60°C and is rated with IP20 protection, suitable for typical industrial and commercial electrical cabinets.
DPST contact configuration enables switching of two different circuits independently. Star-delta operation ensures controlled motor starting with minimal current spikes. Robust mounting on DIN rail allows easy integration into existing control panels.
Wide supply voltage and frequency compatibility adapt to various power environments. Compliance with CSA, IEC, and UL standards guarantees international safety and quality. Compact dimensions optimize space usage in electrical enclosures.
Reliable screw terminals facilitate secure electrical connections. Operating temperature and IP20 rating ensure hardiness in industrial applications.
This Siemens Timer Relay is widely used in industrial automation, manufacturing plants, HVAC systems, and commercial electrical distribution systems where precise timing control is essential. Its star-delta function is particularly beneficial in motor control circuits to reduce electrical stress during startup phases.
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Frequently Asked Questions
The timer relay has a programmable time delay range from 1 to 20 seconds.
It features a DPST (Double Pole Single Throw) contact configuration, allowing for reliable switching of two different circuits independently.
This timer relay supports supply voltages from 12 V to 240 V AC and up to 250 V DC.
The maximum operating temperature for this model is 60°C.
The relay has a width of 22.5 mm and a height of 100 mm.
The contact current rating is 3 A, suitable for moderate load handling.
It meets international standards including CSA, IEC, and UL approvals.
The minimum operating temperature for this timer relay is -25°C.
It is designed for DIN rail mounting, allowing for easy integration into electrical control panels.
This model operates in Star-Delta mode, which helps reduce inrush current during motor startup.
It utilizes a screw terminal type, facilitating secure and easy wiring installation.
The timer relay has 2 contacts, suitable for various switching applications.
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