DatasheetDelta 48-S
Residual current device, 48 × 48 mm
| Type | Residual current device for monitoring fault and leakage currents |
|---|---|
| Model | Delta 48-S |
| Format | 48 × 48 mm |
| Input | Low-voltage line with TD series transformer |
| Waveform | Sinusoidal, AC type; chopped pulsating with superimposed DC component, A type according to IEC/EN 60947-2 Annex M |
| Rated frequency | 50 Hz |
| Working frequency | 47…63 Hz |
| Residual current setting | Selectable by 7-position potentiometer, 3 ranges ×1 / ×10 / ×100 |
| IΔn ranges | 30 mA…30 A |
| Non-operating residual current | 0.5 × IΔn |
| Intervention time | Selectable by 7-position potentiometer |
| Intervention time ranges | 0 / 0.15 / 0.25 / 0.5 / 1 / 2.5 / 5 s |
| Instantaneous trip | t = 0 s at IΔn 30 mA |
| Power-on signalling | Green LED “ON” |
| Alarm intervention | Red LED “TRIP” and relay switching |
| Ring current transformer-relay connection failure | Red LED “TRIP” blinking and relay switching |
| Manual test | Verifies the residual current relay perfect working |
| Automatic continuous test | Verifies the integrity of the connection between relay and ring core |
| Alarm memorization | Red LED “TRIP” and relay self-retaining, except with automatic reset |
| Reset | Manual or automatic, selectable by DIP switch |
| Automatic reset | 3 restart attempts, each 60 seconds |
| Reset inhibit | With persistent residual current > 50 % IΔn |
| Output | 1 SPDT contact + 1 SPST contact |
| Contact rating | 5 A / 250 VAC at cosφ 1; 3 A / 250 VAC at cosφ 0.4; 5 A / 30 VDC |
| Security | Negative or positive safety, selectable by DIP switch |
| AC auxiliary supply | 48 / 115 / 230 / 240 / 400 VAC |
| AC tolerance | 0.85…1.1 Uaux; 40…60 V at Uaux 48 V |
| Auxiliary supply rated frequency | 50 Hz |
| Auxiliary supply working frequency | 47…63 Hz |
| AC power consumption | ≤ 2.5 VA |
| DC auxiliary supply | 20…150 VDC |
| Reverse polarity protection | Available |
| DC power consumption | ≤ 2.5 W |
| Short interruption of auxiliary supply | Immunity up to 300 ms |
| Installation category | III |
| Pollution degree | 2 |
| Insulation reference voltage | 450 V |
| Impulse withstand voltage | 5 kV, 1.2/50 µs, 0.5 J |
| AC voltage test 1 | 2.5 kV R.M.S., 50 Hz / 1 min |
| Considered circuits 1 | Input, relay output, auxiliary supply |
| AC voltage test 2 | 4 kV R.M.S., 50 Hz / 1 min |
| Considered circuits 2 | All circuits and earth |
| Electromagnetic compatibility | Emission tests according to EN 50081-1 and EN 55011; immunity tests according to EN 50082-2 |
| High frequency disturbance test | 1 MHz damped oscillatory wave according to EN 61000-4-4 |
| EMC test voltage | 2.5 kV common mode, 1 kV series mode |
| Operating temperature | -5…50 °C |
| Limit temperature range | -10…55 °C |
| Storage temperature range | -40…70 °C |
| Relative humidity | 50 % according to IEC 60755, highest value at 40 °C |
| Climatic suitability | Suitable for tropical climates |
| Max. power dissipation | ≤ 2 W |
| Mounting | Flush mounting, panel cutout 45 × 45 mm |
| Depth | 102 mm |
| Front frame | 48 × 48 mm; 52 × 52 mm with IP54 option |
| Connections | Fast-on 6.3 × 0.8 mm |
| Housing material | Self-extinguishing Makrolon |
| Protection degree | IP40 front frame, IP20 terminals |
| Option | Kit for IP54 front frame protection |
| Weight | 200 g |
