Datasheet

K8AK-PA
2
Ratings and Specifications
Ratings
Rated input volt-
age
K8AK-PA1
Three-phase, three-wire Mode: 200, 220, 230 and 240 VAC
Three-phase, four-wire Mode: 115, 127, 133 and 138 VAC
K8AK-PA2
Three-phase, three-wire Mode: 380, 400, 415 and 480 VAC
Three-phase, four-wire Mode: 220, 230, 240 and 277 VAC
Input load
K8AK-PA1: Approx. 4.4 VA
K8AK-PA2: Approx. 4.4 VA
Operating value setting range (ASY.) Asymmetry set value: 2% to 22%
Operating value
Asymmetry operating value = Rated input voltage × Asymmetry set value (%)
The asymmetry operation will function when the potential difference between the highest and lowest voltage
phases equals or exceeds the asymmetry operating value.
Reset value setting range (HYS.) 5% of operating value (fixed)
Reset method Automatic reset
Operating time
setting range (T)
Asymmetry 0.1 to 30 s
Phase sequence 0.1 s±0.05 s
Phase loss 0.1 s max.
Power ON lock time (LOCK) 1 s/5 s (Changed with the DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (ALM): Red
Output relays One SPDT relay (NC operation)
Output relay ratings
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
3 A at 250 VAC/30 VDC: 100,000 operations
Ambient operating temperature −20 to 60°C (with no condensation or icing)
Storage temperature −25 to 65°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 to 0.59 N·m
Terminal wiring method
Recommended wire
Solid wire: 2.5 mm
2
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
Case color N1.5
Case material PC and ABS, UL 94 V-0
Weight Approx. 130 g
Mounting Mounts to DIN Track.
Dimensions 22.5 × 90 × 100 mm (W×H×D)