Page 192 - Motor_protection_and_control_Manual_motor_starters_ contactors

Electronic timers

Technical data

Contact utilization characteristics according to IEC
Types TEF3-ON TEF3-OFF
Standards IEC 60947-5-1 and EN 60947-5-1
Rated insulation voltage Ui acc. to IEC 60947-5-1 400 V
Rated impulse withstand voltage Uimp 4 kV
Rated operational voltage Ue max. 240 V
Rated frequency (without derating) 50 / 60 Hz
Conventional thermal current Ith - θ ≤ 40 °C 5 A
Ie / Rated operational current AC-15
acc. to IEC 60947-5-1 24-127 V 50/60 Hz 3 A
220-240 V 50/60 Hz 1.5 A
Making capacity acc. to IEC 60947-5-1 10 x Ie AC-15
4 Breaking capacity acc. to IEC 60947-5-1 10 x Ie AC-15
Ie / Rated operational current DC-13
acc. to IEC 60947-5-1 24 V DC 1 A / 24 W
Short-circuit protection device gG type fuse 6 A
Rated short-time withstand current Icw for 1.0 s 8 A
θ = 40 °C for 0.1 s 8 A
Minimum switching capacity 12 V / 3 mA
with failure rate acc. to IEC 60947-5-4 24 V DC 10 -7
Power dissipation per pole at 3 A 0.1 W
Function diagram ON-delay OFF-delay
150 ms 1 s
min. min.
Uc (A1 - A2) Uc (A1 - A2)
100 ms 100 ms
min. min.
N.O. (67 - 68) N.O. (67 - 68)
N.C. (55 - 56) N.C. (55 - 56)
t t
Bistable relay inside.
Before use, once apply Uc then switch it off in order to initialize position of the contacts.
Control circuit voltage
AC control voltage Rated control circuit voltage Uc 24...240 V AC
50/60 Hz Average consumption 1.5 mA RMS 1 mA RMS
DC control voltage Rated control circuit voltage Uc 24...240 V DC
Average consumption 1.5 mA 1 mA
Rated frequency limits 50 / 60 Hz
Supply voltage range 0.85...1.1 x Uc (at θ ≤ 70 °C)
Overvoltage protection Varistor included
Time delay range (t) selected by switch 0.1...1 s
1...10 s
10...100 s
On-load reiteration accuracy under constant conditions ≤ 1 %
Minimum ON period 0.1 s 1 s
Recovery time 0.15 s 0.1 s
Ambient air temperature Operation -25 °C ... +70 °C
Storage -40 °C ... +80 °C
Climatic withstand Category B according to IEC 60947-1 Annex Q
Maximum operating altitude 2000 m
Mounting positions Mounting positions 1, 1 +/- 30°, 2, 3, 4, 5
Shock withstand 1/2 sinusoidal shock for 11 ms: no change in contact position
acc. to IEC 60068-2-27 and EN 60068-2-27 Same as contactor or contactor relay
(Mounting position 1)
Vibration withstand 5...300 Hz
acc. to IEC 60068-2-6 3 g closed position / 2 g open position
Mechanical durability
Number of operating cycles 5 millions operating cycles
Max. switching frequency 3600 cycles/h 1800 cycles/h
Max. electrical switching frequency
AC-15 1200 cycles/h
DC-13 900 cycles/h
1SBC101505S0201 - Rev. B

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