NewTrend · memory and latching relay
Product overview
NewTrend RM8-01 provides pushbutton-controlled memory and latching operation for lighting and control circuits. Parallel momentary pushbuttons allow control from several locations using the A1-S control input. It provides one SPDT output. Choose the AC/DC 12-240V W240 version or AC 230V A230 version. The 18mm DIN-rail relay has 16A AC-1 contacts and LED status indication.
Technical selection summary
| Model | RM8-01 |
|---|---|
| Function | Memory and latching / impulse relay |
| Control-supply versions | W240: AC/DC 12-240V; A230: AC 230V |
| Supply frequency | 50/60Hz AC or DC for W240 |
| Supply terminals | A1-A2 |
| W240 AC power input | 0.7-3VA |
| W240 DC power input | 0.5-1.2W |
| A230 power input | Maximum 12VA / 1.3W |
| Supply tolerance | -15% to +10% |
| Control terminals | A1-S |
| Minimum impulse length | 25ms |
| Output-sequence link | Not applicable |
| Glow-lamp pushbuttons | AC 230V version only; A1-S |
| Maximum glow lamps | 75 at 230V; measured at 0.68mA per lamp |
| Temperature coefficient | 0.05%/°C at 20°C |
| Output contacts | 1 SPDT |
| Output terminals | 11-12-14 |
| Contact rating | 16A, AC-1 |
| Switching voltage | 250VAC / 24VDC |
| Minimum DC breaking power | 500mW |
| Supply indication | Green LED |
| 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°C |
| Storage temperature | -35 to +75°C |
| Mounting | DIN rail to EN/IEC 60715; 18mm module |
| Protection | IP40 front panel / IP20 terminals |
| Operating position | Any |
| Overvoltage category / pollution degree | III / 2 |
| Maximum conductor size | Solid: 1 x 2.5mm² or 2 x 1.5mm²; with sleeve: 1 x 2.5mm² |
| Terminal tightening torque | 0.4Nm |
| Body dimensions | 90 x 18 x 64mm |
| Overall height in drawing | 95mm including rail-clip projection |
| Weight by supply version | W240: 58g; A230: 57g |
| Referenced standard | EN 61810-1 |
Operation
- Use momentary pushbuttons connected as shown between the supply/control points A1 and S. Multiple pushbuttons may be wired in parallel.
- Apply a control pulse of at least 25ms. The original function diagram shows the latched output response and supply-interruption behavior.
- The green LED indicates supply and the red LED indicates output state. The AC 230V version supports glow-lamp pushbuttons within the stated total allowance.
Typical applications
- Lighting control from several pushbutton locations
- Staircase, corridor and room lighting control circuits
- Control panels requiring impulse-operated latching contacts
View or download RM8-01/02 memory and latching relay catalogue (PDF)
Product reference images and drawings
Original model coding, supply-version data and technical parameters
Original pulse timing, lighting example, contact wiring and dimensions
Choose the control-supply version before connecting power. The product photograph illustrates the AC/DC 12-240V version; A230 and W240 have different power-input data. The 75 glow-lamp allowance applies only to the AC 230V version at the stated 0.68mA per lamp. Follow the exact-model contact and pulse-sequence diagrams. Installation and wiring must be performed by qualified electricians.
