TB388 15 minute 24 hour timer switch

TB388 15 Minute 24 Hour Timer Switch

TB388 analog time switch is an economical solution for applications that require more than 20 A and a wide range of 110-230 VAC voltage inputs. This device can be installed in indoor or outdoor enclosures, making it suitable for a variety of applications. TB388 is particularly suitable for the following tasks: 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
  • Finger-safe terminals
  • Shortest switching time: 15 minutes
  • Simple summer/winter time correction
  • Clock hands for time display 
  • 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
TB388 dimension

Maximum Load Testing for Analog Timer Switches

LETOP performs maximum load test on timer switches

Letop Maximum Load Testing

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