NewTrend · Emergency light test relay
Product overview
NewTrend RT8-LT starts a timed emergency-light test from its integrated Test key. The relay interrupts the normal mains connection so compatible emergency luminaires operate from their rechargeable cells, then reconnects the mains when the selected interval ends. A front potentiometer sets the test interval from 0.5 minutes to 3 hours. The 18mm DIN-rail unit uses AC 230V supply.
Technical selection summary
| Model | RT8-LT |
|---|---|
| Output contacts | 1 SPDT |
| A230 power input | AC maximum 1.2VA / 0.8W |
| Weight | 70g |
| Function | Timed emergency-light test |
| Supply terminals | L-N |
| Control supply options | AC 230V; 50-60Hz |
| Supply tolerance | -15% to +10% |
| Supply indication | Green LED |
| Time setting | Front potentiometer; integrated Test key |
| Adjustment range | 0.5min-3hours |
| Time setting deviation | 10% with mechanical adjustment |
| Repeat accuracy | 0.2% of set value |
| Minimum power-on time | 500ms |
| Temperature coefficient | 0.05%/degree C |
| Contact rating | 16A, AC-1 |
| Switching voltage | 250VAC / 24VDC |
| Minimum DC breaking power | 500mW |
| Output indication | Red LED |
| Mechanical life | 10,000,000 operations |
| Electrical life (AC-1) | 100,000 operations |
| Reset time | Maximum 200ms |
| Operating temperature | -20 to +55 degrees C |
| Storage temperature | -35 to +75 degrees C |
| Mounting | DIN rail to EN/IEC 60715 |
| Protection | IP40 front panel; IP20 terminals |
| Operating position | Any |
| Overvoltage category | III |
| Pollution degree | 2 |
| Maximum conductor size | 1 x 2.5mm2 or 2 x 1.5mm2 |
| Terminal tightening torque | 0.8Nm |
| Body dimensions | 90 x 18 x 64mm |
| Referenced standards | EN 61812-1; IEC 60669-2-3; IEC 60947-5-1 |
For emergency luminaires with integrated rechargeable cells. Select any required contactor from the actual load and inrush current; the test relay does not replace the luminaire or its battery system.
Operation
- Pressing the integrated Test key starts the selected interval and operates the output relay; the red indication flashes while the test runs.
- After the interval ends, the output resets and reconnects the mains. Holding Test for more than 2 seconds aborts the test.
Typical applications
- Manual initiation of a timed emergency-light battery test
- Emergency-light maintenance circuits with integrated rechargeable luminaires
Specify your enquiry
For a focused quotation, include:
- Required test interval and emergency-luminaire type
- Connected load, inrush current, contactor requirement, quantity and destination
Download NewTrend RT8-LT datasheet (PDF)
Product reference images and drawings
Terminal connections
Operating sequence
RT8-LT housing dimensions.
Emergency-luminaire connection examples
Keep the L-N supply continuously applied. Press Test to start the timed test; the mains connection to the luminaires is interrupted during the interval. Hold Test for more than 2 seconds to abort the running test. Use the native circuit diagrams to connect the lighting or a suitable contactor. Installation and wiring must be performed by qualified electricians.
