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K8AK-AS
Ratings and Specifications
Input Range
Model
Range
0 to 20 mA AC/DC
K8AK-AS1
0 to 100 mA AC/DC I2-COM
0 to 500 mA AC/DC I3-COM
0 to 1 A AC/DC
K8AK-AS2
0 to 5 A AC/DC
0 to 8 A AC/DC
0 to 100 A AC
K8AK-AS3
0 to 200 A AC
*1 The range is selected using connected terminals.
*2 The K8AK-AS3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.)
Ratings
Power supply voltage
Isolated power supply
Power consumption
Operating value setting range (SV)
Operating value
Reset value setting range (HYS.)
Reset method
Operating time setting range (T)
Startup lock time setting range (LOCK)
Note: Enabled only for overcurrent operation.
Indicators
Input impedance
Output relays
Output relay ratings
Ambient operating temperature
Storage temperature
Ambient operating humidity
Storage humidity
Altitude
Terminal screw tightening torque
Terminal wiring method
Case color
Case material
2
Connection
*1
Setting range
terminal
I1-COM
2 to 20 mA AC/DC,
10 to 100 mA AC/DC,
50 to 500 mA AC/DC
I1-COM
0.1 to 1 A AC/DC,
0.5 to 5 A AC/DC,
I2-COM
0.8 to 8 A AC/DC
I3-COM
I2-COM
10 to 100 A AC
20 to 200 A AC
I3-COM
24 VAC/DC
100 to 240 VAC
24 VAC/DC: 2.0 VA/1.1 W max.
100 to 240 VAC: 4.6 VA max.
10% to 100% of the maximum value of the setting range
K8AK-AS1:
K8AK-AS2:
K8AK-AS3:
100% operation at set value
5% to 50% of operating value
Manual reset/automatic reset (switchable)
Note: Manual reset: Turn OFF power supply for 1 s or longer.
0.1 to 30 s
0 to 30 s
(The startup lock timer starts when the input has reached approximately 30% or more of the set value.)
Note: Enabled only for overcurrent operation.
Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (ALM): Red
Refer to Input Range on this page.
One SPDT relay (NO/NC switched using DIP switch.)
Rated load
Resistive load
5 A at 250 VAC
5 A at 30 VDC
Maximum switching capacity: 1,250 VA, 150 W
Minimum load: 5 VDC, 10 mA (reference values)
Mechanical life: 10 million operations min.
Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations
−20 to 60°C (with no condensation or icing)
−25 to 65°C (with no condensation or icing)
25% to 85% (with no condensation)
25% to 85% (with no condensation)
2,000 m max.
0.49 to 0.59 N·m
Recommended wire
Solid wire: 2.5 mm
Twisted wires: AWG16, AWG18
Note: 1. Ferrules with insulating sleeves must be used with twisted wires.
2. Two wires can be twisted together.
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
N1.5
PC and ABS, UL 94 V-0
Input
Input type
impedance
Approx. 5 Ω
Direct input
Approx. 1 Ω
Direct input
Approx. 0.2 Ω
Direct input
Approx. 0.12 Ω Direct input or
commercially
Approx. 0.02 Ω
available CT
Approx. 0.02 Ω Direct input
---
OMRON CT
*2
,
*2
---
OMRON CT
2 to 20 mA AC/DC
10 to 100 mA AC/DC
50 to 500 mA AC/DC
0.1 to 1 A AC/DC (Compatible with commercially available CTs.)
0.5 to 5 A AC/DC (Compatible with commercially available CTs.)
0.8 to 8 A AC/DC
When used with the OMRON CT (K8AC-CT200L).
10 to 100 A AC
20 to 200 A AC
3 A at 250 VAC/30 VDC:100,000 operations
2
Overload capacity
Continuous input at
120% of maximum input
1 s at 150%
Continuous input at 120% with
an OMRON CT (K8AC-CT200L).
30 s at 200%
1 s at 600%
* CT capacity on primary side.
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