TB388S electrical box timer 1

TB388S Electrical Plastic Box Timer

TB388S analog time switches are an economical solution for applications requiring more than 20A and wide voltage (110-230 VAC). The unit is housed in a plastic enclosure. TB388S is suitable for a variety of applications, including: Billboard or Showcase Lighting, Air Conditioning or Commercial Refrigeration, Pumps/Motor/ Geyser/Fan Control, Hydroponic Systems, Wastewater Treatment Systems, Generator Exercising, Boilers / Heater Control, Pool & Spa, etc.

  • 1 channel, daily program
  • Plastic enclosure, wall mounting
  • Quartz controlled
  • Shortest switching time: 15 minutes
  • Simple summer/winter time correction
  • 300 hours power reserve (Nickel metal hydride battery replacement)
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Supply voltage 110-230Vac, 50/60Hz
Switching capacity Resistive load: 20 A / 250 V~ at cosφ=1
  Inductive load: 12 A / 250 V~ at cosφ=0.6
Number of switching segments 96
Time accuracy at 25 °C ≤± 2 Sec./day (quartz)
Power reserve 300 hours
Type of contact Not potential-free
Type of protection IP 20
Class of protection II according to IEC/EN 60730-1
Housing and insulation material High-temperature resistant,self-extinguishing thermoplastic
Test approval CE
Power consumption 3 VA
Maximum recommended load (10,000 operations)
Filament / Halogen lamp 2300 W
Motor load(cos=0.7) AC110.750W / AC220V.1500W
Fluorescent lamp load (conventional) parallel-corrected 1300VA 70uF
TB388 TB388B TB388S Wiring Diagram
TB388S dimension

Maximum Load Testing for Analog Timer Switches

LETOP performs maximum load test on timer switches

Letop Maximum Load Testing

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