Page 555 - Motor_protection_and_control_Manual_motor_starters_ contactors

Electronic timers

Description
TEF4 frontal electronic timers are used for realizing timing function and are available in ON-delay and OFF-
1sbc100004V0014 Compact solution in cabinet compared to separate timers
delay versions.
TEF4 electronic timers are front-mounted and locked on AF contactors or NF contactor relays.
A mechanical indicator allows to show the state of the contactor.
TEF4-ON Safe and cost-reduced wiring
TEF4 electronic timers are supplied by a direct plug-in parallel connection to the coil terminals A1 - A2 of
the contactor or contactor relay. A varistor is integrated on the timer to offer a built-in protection against
surges in the contactor coil.
Available for a wide control voltage range 24...240 V AC/DC
TEF4-ON or TEF4-OFF allow time-delayed functions up to 100 s in 3 distinct time ranges, independently
of the control system. The time delay ranges are selected by a switch and the time delay can be adjusted
by means of a rotary switch. The timing function is activated by closing or opening the device on which the
timer is mounted. The OFF-delay version operates without additional control supply.
5
Ordering details
For contactors, Time delay Delay Rated control Auxiliary Type Order code Weight
1SBC100012V0014 selected by Uc Pkg
contacts
circuit voltage
type
contactor relays
range
(1 pce)
switch
V 50/60 Hz or DC kg
TEF4-OFF AF09 ... AF96 0.1...1 s ON-delay 24...240 1 1 TEF4-ON 1SBN020112R1000 0.065
NF 1...10 s
10...100 s OFF-delay 24...240 1 1 TEF4-OFF 1SBN020114R1000 0.065

1SBC101669S0201 - Rev. A

ABB | 5/355