NewTrend · Power-off delay timer relay
Product overview
The NewTrend RT8-D maintains its output for an adjustable interval after the control supply is removed. It provides a 0.1-second to 10-minute power-off delay, one changeover contact and a universal AC/DC 12-240V supply in an 18mm DIN-rail housing. Apply power for at least 3 seconds before a power-off timing cycle.
Technical selection summary
| Model | RT8-D |
|---|---|
| Function | Power-off delay without an external supply during the delay interval |
| Control supply | AC/DC 12-240V; 50/60Hz for AC; terminals A1-A2 |
| Control-supply code | W240 |
| Supply tolerance | -15% to +10% |
| Timing range | 0.1s-10min |
| Range settings | 1s, 10s, 100s and 10min; fine adjustment 10%-100% |
| Minimum energization | 3s before supply removal |
| Output contacts | 1 SPDT (1 changeover): common 15, NC 16, NO 18 |
| Contact current | 16A, AC-1 |
| Switching voltage | 250VAC / 24VDC |
| Minimum DC switching power | 500mW |
| Power consumption | AC 0.09-3VA; DC 0.05-1.5W |
| Supply / output indication | Green / red LED |
| Time setting | Rotary range selector and fine-adjustment potentiometer |
| Time-setting deviation | 10% (mechanical setting) |
| Repeat accuracy | 0.2% set-value stability |
| Temperature coefficient | 0.05% per degree C at 20 degrees C |
| Mechanical / electrical life | 1 x 10^6 / 5 x 10^4 operations (electrical life at AC-1) |
| Reset time | Maximum 200ms |
| Operating temperature | -20 to +55 degrees C |
| Storage temperature | -35 to +75 degrees C |
| Mounting | 35mm DIN rail; EN/IEC 60715; any operating position |
| Ingress protection | IP40 front panel; IP20 terminals |
| Overvoltage category / pollution degree | III / 2 |
| Conductors | Solid: maximum 1 x 2.5mm2 or 2 x 1.5mm2; ferruled: maximum 1 x 2.5mm2 (AWG12) |
| Terminal torque | 0.8Nm |
| Dimensions | 90 x 18 x 64mm body; 95mm overall mounting height; 4.2mm fixing holes |
| Mass | 69g |
| Reference standards | EN 61812-1; IEC 60947-5-1 |
The 16A contact rating applies to AC-1 loads; select contactors or suitable switching devices for other load duties. The 0.1s-10min interval is adjustable on the relay, rather than a set of different ordering versions. Only the listed AC/DC 12-240V supply version is offered on this page.
Typical applications
- Delayed release of control circuits following removal of the control supply.
- Timed shutdown of lighting, fans and auxiliary control equipment within the stated contact ratings.
Specify your enquiry
For a focused quotation, include:
- RT8-D model, AC/DC 12-240V supply and required quantity.
- Required power-off delay, load voltage/current and load category.
- DIN-rail arrangement and any associated contactor or switching interface.
Download NewTrend RT8-D datasheet (PDF)
Product reference images and drawings
Wiring diagram
Power-off timing diagram
Dimensions in millimetres
Set the range selector only to 1s, 10s, 100s or 10min. Adjust the second knob from 10% to 100%. An invalid intermediate range position causes the red LED to flash; disconnect power for 30 seconds before resetting. Installation and wiring must be performed by qualified electricians.
