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Ratings
K8DT-AS@@D: 24 VAC 50/60 Hz, 24 VDC
Power supply voltage
K8DT-AS@@A: 100 to 240 VAC 50/60 Hz
24 VAC/DC: 1.8 VA/1 W max.
Power consumption
100 to 240 VAC: 2.5 VA max.
Rated insulation
600 VAC
voltage
10% to 100% of the maximum value of the setting range
K8DT-AS1: 2 to 20 mA AC/DC
K8DT-AS2: 0.1 to 1 A AC/DC (Compatible with
Operating value
setting range (SV)
K8DT-AS3: When used with the OMRON CT
Operating value
100% operation at set value
Reset value setting
5% to 50% of operating value
range (HYS)
Manual reset/automatic reset (switchable)
Reset method
Note: Manual reset: Turn OFF power supply for
1 s or longer.
Operating time
0.1 to 30 s
setting range (T)
0 to 30 s
Startup lock time
(The startup lock timer starts when the input has
setting range (LOCK)
reached approximately 30% or more of the set value.)
Note: Enabled only for overcurrent operation.
Power (PWR): Green, Output (OUT): Yellow,
LED Indicators
Alarm outputs (ALM): Red
Input impedance
Refer to Input Range on page 2.
Relay: SPDT contact output
Transistor: NPN output
Output form
Switchable between normally open and normally
closed with a DIP switch setting.
Rated load: 250 VAC 5 A or 30 VDC 5 A
Minimum load: 5 VDC, 10 mA (reference values)
Output relay ratings
Mechanical life: 10 million operations min.
Electrical life: 5 A at 250 VAC or 30 VDC: 50,000
Contact form: SPST-NO (NPN transistor)
Transistor output
Rated voltage: 24 VDC (maximum voltage: 26.4 VDC)
ratings
Maximum current: 50 mA DC
Ambient operating
−20 to 60°C (with no condensation or icing)
temperature
Storage temperature
−25 to 65°C (with no condensation or icing)
Ambient operating
25% to 85% RH (with no condensation)
humidity
Storage humidity
25% to 85% RH (with no condensation)
Altitude
2,000 m max.
Applicable wires
Stranded wires, solid wires, or ferrules
Applicable wire size
0.25 to 1.5 mm
Wire insertion force
8 N max. for AWG20 wire
Screwdriver
15 N max.
insertion force
Wire stripping length
8 mm
Ferrule length
8 mm
XW4Z-00B (Omron)
Recommended flat-
SZF 0.4 × 2.5 (Phoenix Contact)
blade screwdriver
210-719 (Wago)
SDI 0.4 × 2.5 × 75 (Weidmuller)
Current capacity
10 A (per pole)
Number of insertions
50 times
Case color
N1.5
Case material
PC, UL 94 V-0
Weight
Approx. 100 g
Mounting
Mounts to DIN Track, or screw mounting
Dimensions
17.5 × 90 × 90 mm (W×H×D)
10 to 100 mA AC/DC
50 to 500 mA AC/DC
commercially available CTs.)
0.5 to 5 A AC/DC (Compatible with
commercially available CTs.)
(K8AC-CT200L).
10 to 100 A AC
20 to 200 A AC
(resistive load),
250 VAC 1 A (inductive load),
48 VDC 0.2 A (inductive load)
operations
3 A at 250 VAC or 30 VDC:100,000
operations
2
(AWG24 to AWG16)
Specifications
Allowable operating
85% to 110% of power supply voltage
voltage range
Allowable operating
50/60 Hz ±5 Hz
frequency range
K8DT-AS1 and K8DT-AS2:DC input or AC input
Input frequency range
K8DT-AS3: AC input (45 to 65 Hz)
K8DT-AS1 and K8DT-AS2:
Overload capacity
K8DT-AS3:Continuous input at 120%, 30 s at
Note: Overload capacity of primary side of CT.
±0.5% full scale (at 25°C and 65% humidity, rated
Operating
value
power supply voltage)
Repeat error
Operating
±50 ms (at 25°C and 65% humidity, rated power
supply voltage)
time
EN 60947-5-1
Conforming
Installation environment (pollution level 2,
standards
Overvoltage category III)
Applicable
standards
EMC
EN 60947-5-1
Safety
UL 60947-5-1 (Listing), Korean Radio Waves Act
standards
(Act 10564), CCC (GB14048.5)
20 MΩ min.
Between external terminals and case
Between power supply terminals and input
Insulation resistance
terminals
Between power supply terminals and output
terminals
Between input terminals and output terminals
2,000 VAC for one minute
Between external terminals and case
Between power supply terminals and input
Dielectric strength
terminals
Between power supply terminals and output
terminals
Between input terminals and output terminals
Impulse withstand
6 kV (between live terminals and exposed,
voltage
non-charged metal parts)
Square-wave noise of 1-μs/100-ns pulse width
with 1-ns rise time
100 to 240 VAC: 1,500 V power supply terminal
Noise immunity
24 VAC: 1,500 V power supply terminal common/
24 VDC: 480 V power supply terminal common
Frequency 10 to 55 Hz, 0.35-mm single
Vibration resistance
amplitude, acceleration 50 m/s
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance
100 m/s
2
Degree of protection
Terminals: IP20
K8DT-AS
(45 to 65 Hz)
Continuous input at 120% of
maximum input, 1 s at 150%
200%, and 1 s at 600% with an
OMRON CT (K8AC-CT200L)
common/normal mode
normal mode
2
, 3 times each in 6 directions along 3 axes
3
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