The Q557 is a 24 hour time switch that comes with a day omit OFF function. This omit feature on the Q557 allows you to keep your application on all day if selected rather than being restricted to normal times. There is also a manual override button for your convenience. FEATURES Programming: 24 hour with either 2 or 3 operationsCurrent Rating: 20AConnection Pins: 4Battery Reserve: 100 hoursDay Omit Dial: Yes (Omits the ‘OFF’ operation) SPECFICATIONS Programming 24 hour programme with 2 (Q557.2) or 3 (Q557.3) ON/OFF operations per dayDisplay 24 hour dialMounting Surface mountingCurrent Rating SPST: 20amp resistiveSupply 230V, 50/60 Hz a.c.Base Type 4 PinReserve 100 hrs (providing battery has been charged for 300 hrs)Day Omission Yes (omits the “OFF” operation)Temp Override Facility Advance to “OFF”, when program “ON” and will remain “OFF” unit next(Manual Button) “ON” operation and vice versaCable Size 6.0mm2Timing Accuracy 5 mins/yearPower Consumption 0.6W at 230VAmbient Temperature Range Designed to operate over a temperature range of 0°C to 50°C continuousLive Parts Protection This timer is totally protected by its enclosureDirt Protection Normal domestic dust deposits onlyMoisture Protection Ordinary: has no special protection against moistureShock Protection Class 1 (Product must be earthed)Dial Calibration 15 min divisionsSetting Accuracy +/- 3 minutesConforms to BS EN60730Dimensions Height (wall mounted) 136mm, width 105.7mm, projection 82mm, (Total height 146.5mm) WIRING 1 – Live In (Clock & Load) – External link 1 to 3 if using a single 230Vac supply2 – Live Out (Load)3 – Live In (Clock)4 – NeutralsEarth Posn – Earth 4 pin switches have independent clock and switch connections which enable a different AC switching circuit voltage to be controlled from that of the 230V required to run the clock. eg switch a 110Vac machine. You can also isolate the switching circuit independent of the supply to the clock. DOWNLOADS Q557 Datasheet [PDF] RPTS Standard Instructions [PDF]
