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Sangamo S255 Commercial Timer, 4 Pin Time Switch 20A 0.6W with a day omission

Model No. S255/2
Availability: Usually 3-5 days


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(over £100+VAT, applies to zones A&B only , £6 +VAT otherwise)
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This is the Sangamo standard RPTS S255 24 Hour, 4-pin Time Switch with 3 ON/OFF Operations without battery reserve - 3 ON and 3 OFF operations per day, with a "day omit" (allows you to select any number of days in the week on which the switching cycle can be disabled). The 24h programming cycle performs the same sequence of switching operations on each day; it can be quickly set with the help of the small manual levers on the dial. It is ideal for operating heating, ventilation, and equipment controls at certain times of day. 

Sangamo S255 4 Pin Commercial Time Switch

  • Programming: 24 hour with 3 operations
  • Current Rating: 20A
  • Connection Pins: 4
  • Battery Reserve: None
  • Day Omit Dial: Yes (Omits the ‘ON’ operation)
  • Sangamo Time Switch, 4 Pin, 20A, 0.6W
  • Programming: 24 hour programme with 3 ON and 3 OFF operations per day
  • Display: 24 hour dial
  • Mounting: Surface mounting
  • Current Rating: SPST: 20amp resistive
  • Mains Supply: 230V, 50/60 Hz a.c.
  • Base Type: 4 Pin
  • Reserve: none
  • Day Omission: Yes (omits the “ON” operation)
  • Temp Override Facility (Manual Button): Advance to “OFF”, when program “ON” and will remain “OFF” unit next “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 0oC to 50oC continuous
  • Live Parts Protection: This timer is totally protected by its enclosure
  • Dirt Protection: Normal domestic dust deposits only
  • Moisture Protection Ordinary: it has no special protection against moisture
  • Shock Protection: Class 1 (it must be earthed)
  • Dial Calibration: 15 min divisions
  • Setting Accuracy: +/- 3 minutes
  • Period Between unlike Operations: 15 minutes minimum
  • Period Between like Operations: 1 3/4 hours minimum
  • BEAB Approval: Yes
  • Dimensions: Height (wall mounted) 136mm, width 105.7mm, projection 82mm, (Total height 146.5mm)

Note: Some images and pictures are for reference only. The item may differ from the image/picture due to manufacturer's change. Should you require the exact item in the picture, please call or email us to enquire.

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Sparks Direct delivers via courier to the UK only; the standard delivery charge is £6 + VAT for all orders under £100 + VAT. If your order is over £120, you get free delivery (unless there's a special delivery charge for the items you wish to order or you're in shipping zone C or D). Full details for shipping charges can be found via Terms and Conditions.

If the items you order are in stock and the order is placed before 1.00pm, delivery can be made within 1-2 working days. If the items are not in stock, we will inform you via email how long it will take or ask for your confirmation if there's a long lead time.


We offer 30-day returns for unwanted items - please email us to request a returns number which will need to be quoted when the items are returned. For faulty items or items damaged in transit, please advise via email, and an appropriate returns number will be provided. Full details concerning returns and refunds can be found via our Terms and Conditions.