Siemens 3RP2576-1NW30 is a SIRIUS electronic star-delta timing relay with 3–60 second adjustment and universal supply.
Siemens 3RP2576-1NW30 is a SIRIUS 3RP25 electronic timing relay for star-delta motor starting. It provides one instantaneous normally open contact and one delayed normally open contact, allowing the star contactor to energize first and the delta contactor to switch after the selected timing interval.
The relay offers a single adjustable range from 3 to 60 seconds, a universal 12–240 V AC/DC control supply, LED indication and screw terminals. Its narrow 22.5 mm industrial enclosure supports DIN-rail installation in motor-control panels where the contactor sequence, control voltage and timing requirement match the installed starter design.
| Manufacturer | Siemens |
|---|---|
| Complete Part Number | 3RP2576-1NW30 |
| Product Family | SIRIUS 3RP25 timing relays |
| Product Type | Electronic star-delta timing relay |
| Product Lifecycle | PM300: Active Product |
| Timing Function | Star-delta (wye-delta) starting sequence |
| Output Contacts | 1 NO instantaneous and 1 NO delayed |
| Terminal Design | Screw terminals |
| Adjustable time range | 3–60 s |
|---|---|
| Control supply voltage | 12–240 V AC/DC |
| AC supply frequency | 50–60 Hz |
| Relay outputs | 1 NO instantaneous; 1 NO delayed |
| Status indication | LED |
| Thermal current | 5 A |
| Maximum power loss | 2 W |
| Recovery time | 250 ms |
| Setting accuracy | ±5% of full-scale value |
| Repeat accuracy | ±1% |
| Mechanical service life | 10,000,000 operating cycles, typical |
| Electrical endurance | 100,000 cycles at AC-15, 230 V, typical |
| Front protection | IP20 according to IEC 60529 |
| Mounting | Screw mounting or snap-on mounting on 35 mm DIN rail |
| Mounting position | Any |
| Dimensions (W × H × D) | 22.5 × 100 × 90 mm |
| Operating temperature | −25 to +60 °C |
| Storage and transport temperature | −40 to +85 °C |
| Maximum installation altitude | 2,000 m |
| Approximate net weight | 0.154 kg |
Coordinates star and delta contactors in compatible reduced-voltage motor-starting circuits.
Provides a compact universal-voltage timer for DIN-rail motor-control assemblies using screw wiring.
Supports exact-article replacement when the starter wiring, contactor coils and timing sequence remain unchanged.
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Available units can be reviewed for nameplate, housing, terminals and stated condition against customer-supplied application information.
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| Order identity | Manufacturer, complete part number, suffix and ordered quantity |
|---|---|
| Commercial verification | Available condition, lead-time basis and warranty terms |
| Technical review | Customer-supplied function, voltage, contact, terminal and application information |
| Visual review | Nameplate, housing, terminals and visible condition when applicable |
| Logistics | Packing method, shipping documents and destination coordination |
| After-sales support | Traceable communication for procurement and warranty follow-up |
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