Sangamo S255.2 Standard RPTS S255 24 Hour 4-Pin Time Switch With 2 On/Off Operations Without Battery

Round Pattern (RPTS) Standard time switches are robust, 20amp switches that are ideal for the switching of heating and lighting applications- up to three times a day. The S255 has a 4-pin base which means it has independent motor connections which enable a different switching circuit voltage from the voltage powering the time switch. The day omit feature means you can skip any day of the week if necessary. There is also a manual override button for your convenience. The S255 is a fit-and-forget time clock.

Programming 24 hour programme with 2 (S255.2) or 3 (S255.3) ON/OFF operations per day
Display 24 hour dial
Mounting Surface mounting
Current Rating SPST: 20amp resistive
Supply 230V, 50/60 Hz a.c.
Base Type 4 Pin
Reserve none
Day Omission Yes (omits the “ON” operation)
Temp Override Facility Advance to “OFF”, when program “ON” and will remain “OFF” unit next
(Manual Button) “ON” operation and vice versa
Cable Size 6.0mm2
Timing Accuracy 5 mins/year
Power Consumption 0.6W at 230V
Ambient Temperature Range Designed to operate over a temperature range of 0°C to 50°C continuous
Live Parts Protection This timer is totally protected by its enclosure
Dirt Protection Normal domestic dust deposits only
Moisture Protection Ordinary: has no special protection against moisture
Shock Protection Class 1 (Product must be earthed)
Dial Calibration 15 min divisions
Setting Accuracy +/- 3 minutes
Conforms to BS EN60730
Dimensions Height (wall mounted) 136mm, width 105.7mm, projection 82mm, (Total height 146.5mm)

1 – Live In (Load) – External link 1 to 3 if using a single 230Vac supply
2 – Live Out (Load)
3 – Live In (Clock)
4 – Neutrals
Earth 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.