How to Wire a Contactor for Star Delta Motor Starting: Complete Guide
Learn how to wire a contactor for star delta motor starting with IEC 60947 circuits, timer logic, and safe sizing practices for engineers. Shop...
The Schneider Electric RE10RQM7N is a Harmony modular timing relay with the Q (star-delta) function, switching two 5 A normally-open outputs from a shared common after a 2 to 120 second delay on a 240 V AC supply. It is built for star-delta motor starting sequences where the transition timing must be fixed and repeatable.
The split common wiring of the 1 NO + 1 NO output pair lets this relay drive the star contactor on one output and the delta contactor on the other from a single timing element, with the Q function opening one output before closing the other to avoid a star/delta short circuit during transition. The 2-120 s range covers typical motor run-up times for medium induction motors; where a wider 0.1 s-30 h range is needed for non-motor timing duties, the single-contact RE10RAMUN or RE10RCMUN in the same housing are the sibling parts to specify instead.
| Range of Product | Harmony Timer Relays |
|---|---|
| Discrete output type | Relay |
| Product or Component Type | Modular timing relay |
| Time delay type | Q |
| Time delay range | 2...120 s |
| [Us] rated supply voltage | 240 V AC 50/60 Hz |
| nominal output current | 5 A |
| Contacts type and composition | 1 NO + 1 NO |
|---|---|
| Width pitch dimension | 0.7 in (17.5 mm) |
| Control type | Selector switch front panel |
| [Ie] rated operational current | 5 A 250 V AC-1 IEC 60947-5-1, 5 A 28 V DC-1 IEC 60947-5-1, 1.5 A 240 V AC-15 IEC 60947-5-1, 2 A 24 V DC-13 IEC 60947-5-1 |
| Voltage range | 0.8...1.1 Un |
| Connections - terminals | Screw connectors, 2 x 0.5...2 x 1.5 mm² 22 AWG...16 AWG) solid with or without cable end |
| Housing material | Polycarbonate |
| Repeat accuracy | +/- 0.5 % |
| Setting accuracy of time delay | +/- 10 % of full scale 25 °C |
| Reset time | 100 ms on de-energisation |
| Power consumption in VA | 8 VA 240 V |
| Electrical durability | 100000 cycles 5 A, 250 V resistive |
| Mechanical durability | 5000000 cycles |
| [Uimp] rated impulse withstand voltage | 5 kV 1.2…50 µs |
| Marking | CULus, CE, CCC, UKCA |
| Mounting support | 35 mm symmetrical mounting rail |
| Local signalling | LED indicator red, steady ST (status) |
| Net Weight | 2.6 oz (75 g) |
| Compatibility code | RE10 |
| Height | 2.3 in (58.5 mm) |
| Width | 0.7 in (18 mm) |
| Depth | 3.5 in (90 mm) |
| Function available | Q-Star-delta relay (2 NO outputs with same common)-1 NO + 1 NO |
| Number of functions | 1 |
| Dielectric strength | 2.5 kV 1 mA/1 minute 50 Hz |
|---|---|
| Standards | IEC 61812-1 |
| Product Certifications | cULus, CE, CCC, UKCA |
| Ambient Air Temperature for Storage | -4…140 °F (-20…60 °C) |
| Ambient Air Temperature for Operation | 14…131 °F (-10…55 °C) |
| IP degree of protection | IP20 terminals:, IP40 casing: |
| Vibration resistance | 0.15 mm (f= 10…150 Hz) |
| Relative Humidity | 10…95 % without condensation |
| Electromagnetic compatibility | Electrostatic discharge immunity test - test level: 6 kV level 3 (contact discharge) conforming to IEC 61000-4-2, Electrostatic discharge immunity test - test level: 8 kV level 3 (air discharge) conforming to IEC 61000-4-2, Fast transients immunity test - test level: 2 kV level 3 conforming to IEC 61000-4-4 |
| Part number | RE10RQM7N |
|---|---|
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 3606487344711 |
| Warranty (in months) | 18 |
|---|
| Country of origin | IN |
|---|---|
| Shipping weight | 0.075 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of RE10RQM7N is 5 A.
The rated operational voltage of RE10RQM7N is 240 V AC.
The tariff (HS) code on file for RE10RQM7N is 853649.
The EAN (GTIN) of RE10RQM7N is 3606487344711.
RE10RQM7N ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Learn how to wire a contactor for star delta motor starting with IEC 60947 circuits, timer logic, and safe sizing practices for engineers. Shop...