TB388B

■ Analogue time switch
■ 1 channel
■ Switching status display
■ Daily program
■ With power reserve (Nickel metal hydride battery replacement )
■ Can easily replace rechargeable batteries
■ 96 switching segments
■ Quartz controlled
■ Shortest switching time: 15 minutes
■ Clock hands for time display 
■ Simple summer/winter time correction
■ Screw terminals

TB388B   
■ With external protective metal shell, can prevent electromagnetic interference

TB388S
■ With the plastic shell of the double layer protection

TB438
■ With the plastic shell of the double layer protection, can prevent rain

Technical Data

Operating voltage   110-230VAC
Frequency   50-60 Hz
Number of channels 1
Width  107mm
Installation type   DIN-rail
Type of connection Screw terminals
Drive Quartz-controlled stepper motor
Program   Daily program 
Power reserve  300 hours
Max. switching capacity at 250 V AC, cos φ = 1  20 A
Max. switching capacity at 250 V AC, cos φ = 0.6  12 A
Incandescent/halogen lamp load  2300W
Motor load(cos∅=0.7) AC110.750W   AC220V.1500W
Fluorescent lamp load (conventional) parallel-corrected  1300VA 70uF
Shortest switching time  15 min 
Programmable every  15 min 
Time accuracy at 25 °C  ≤ ± 2 s/day(Quartz)
Type of contact SPST
Type of contact  Not potential-free 
Number of switching segments 96
Power consumption  3 VA
Test approvals  CE
Housing and insulation material High-temperature resistant, self-extinguishing thermoplastic
Type of protection  IP 40
Protection class  II in accordance with EN 60730-1
Ambient temperature  –10 °C … +50 °C

Structure

Connection