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Technical
Section 11
Dimensions
Section 12
7
Time delay relays
iRTA iRTB iRTC
Type
Function
b b Delays energizing of a load b b Delays de-energizing of a load
upon closing of an auxiliary contact
(push button)
b b Delays de-energizing of a load
upon opening of an auxiliary contact
(push button)
Wiring diagrams
18 16
A1
N
L
15
A2
A115 Y1
18 16 A2
N
L
A115 Y1
18 16 A2
N
L
Use
b b The single time delay cycle starts
at switching on of the iRTA relay
power supply
b b The load is energized at the end of
time delay T
b b The single time delay cycle starts
at closing of an auxiliary contact
(push button)
b b The load is de-energized at the
end of time delay T
b b The single time delay cycle starts
only upon release of an auxiliary
contact (push button)
b b The load is de-energized at the end
of time delay T
Catalogue numbers A9E16065 A9E16066 A9E16067
Technical specifications
Control and power supply
voltage (Uc)
V AC 24…240, ±10 % 24…240, ±10 % 24…240, ±10 %
V DC 24, ±10 % 24, ±10 % 24, ±10 %
Operating frequency Hz 50/60 50/60 50/60
Time delay range 0.1 s to 100 h 0.1 s to 100 h 0.1 s to 100 h
Precision ±10 % of full scale ±10 % of full scale ±10 % of full scale
Minimum duration of control impulse 100 ms 100 ms 100 ms
Insensitive to brownouts y 20 ms y 20 ms y 20 ms
Max. resetting time per voltage interruption 100 ms 100 ms 100 ms
Accuracy of repetition ±0.5 % at constant parameters ±0.5 % at constant parameters ±0.5 % at constant parameters
Changeover contact
(cadmium free)
Mini Rating 10 mA/5 V DC Rating 10 mA/5 V DC Rating 10 mA/5 V DC
Maxi Rating 8 A/250 V AC/DC Rating 8 A/250 V AC/DC Rating 8 A/250 V AC/DC
Endurance Mechanical > 5 x 106 switching operations > 5 x 106 switching operations > 5 x 10 6 switching operations
Electrical > 105 switching operations
(utilization category AC1)
> 105 switching operations
(utilization category AC1)
> 105 switching operations
(utilization category AC1)
Display of contact status by green indicator
lamp
Flashing during time delay Flashing during time delay Flashing during time delay
Degree of protection Device only IP20 IP20 IP20
Connection by tunnel terminals Without
ferrule
2 x 2.5 mm2 single-strand 2 x 2.5 mm2 single-strand 2 x 2.5 mm2 single-strand
With ferrule 2 x 1.5 mm2 multi-strand 2 x 1.5 mm2 multi-strand 2 x 1.5 mm2 multi-strand
Width in 9-mm modules 2 2 2
Operating temperature °C -5 … +55 -5 … +55 -5 … +55
Storage temperature °C -40 … +70 -40 … +70 -40 … +70
DB123675 DB123676 DB123677
DB123681 DB123682 DB123683
PB111581-35 PB111582-35 PB111583-35
Time delay relays
iRTA, iRTB, iRTC, iRTH, iRTL
and iRTMF
Monitoring
Control
Remote control