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■ Ratings
Power supply
Non-isolated 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
Weight
Mounting
Dimensions
Note: Models with a 24-VDC power supply have a non-isolated power supply; the inputs and power supply are connected internally. If both the
input and power supply are grounded, an unwanted current path will be created and the Unit will not operate normally.
If an unwanted current path exists, use a K8AB model with an AC power supply or use an isolated DC power supply.
Cat. No. N142-E1-02
24 VDC (See note.)
24 VAC, 100 to 115 VAC, 200 to 230 VAC
24 VDC:
1 W max.
24 VAC:
4 VA max.
100 to 115 VAC: 4 VA max.
200 to 230 VAC: 5 VA max.
10% to 100% of maximum measuring current
K8AB-AS1: 2 to 20 mA AC/DC
10 to 100 mA AC/DC
50 to 500 mA AC/DC
K8AB-AS2: 0.1 to 1 A AC/DC
0.5 to 5 A AC/DC
0.8 to 8 A AC/DC
K8AB-AS3: When used together with a K8AC-CT200L Current Transformer
10 to 100 A AC
20 to 200 A AC
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 the "Input Range" on the previous page.
One SPDT relay (NO/NC switched using DIP switch.)
Rated load
Resistive load
6 A at 250 VAC (cos φ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cos φ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage:
250 VAC
Maximum contact current:
6 A AC
Maximum switching capacity: 1,500 VA
Minimum load:
10 mA at 5 VDC
Mechanical life:
10,000,000 operations
Electrical life:
Make: 50,000 times, Break: 30,000 times
− 20 to 60°C (with no condensation or icing)
− 40 to 70°C (with no condensation or icing)
25% to 85% (with no condensation)
25% to 85% (with no condensation)
2,000 m max.
0.49 N·m
Recommended wire
2
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
Munsell 5Y8/1
ABS resin (self-extinguishing resin) UL94-V0
DC models: Approx. 110 g
AC models: Approx. 150 g
Mounted to DIN Track or via M4 screws (tightening torque: 1.2 N·m)
22.5 (W) × 90 (H) × 100 (D) mm
Single-phase Current Relay
K8AB-AS
3
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