Cat. No. N146-E1-02
Three-phase Phase-sequence Phase-loss Relay
K8AB-PM
1
Three-phase Phase-sequence Phase-loss Relay
K8AB-PM
Ideal for monitoring 3-phase power supplies
for industrial facilities and equipment.
• Monitor overvoltages, undervoltages, phase sequence, and
phase loss for three-phase 3-wire or 4-wire power supplies with
just one Unit.
Switch setting for 3-phase 3-wire or 3-phase 4-wire power
supply.
• Two SPDT output relays, 6 A at 250 VAC (resistive load).
Output overvoltages and undervoltages using separate relays.
• World-wide power specifications supported by one Unit
(switchable).
• Output status can be monitored using LED indicator.
Model Number Structure
■
Model Number Legend
1. Basic Model
K8AB: Measuring and Monitoring Relays
2. Functions
PM:
Three-phase Phase-sequence Phase-loss Relay (Simultaneous upper and lower monitoring)
3. Rated Input Voltage
1:
115, 127, 133, 138, 200, 220, 230, 240 VAC
2:
220, 230, 240, 277, 380, 400, 415, 480 VAC
Single K8AB Monitors 3-phase Power Supply with 3 or 4 Wires
Monitoring Relays can be used to monitor 3-phase power supplies with 3 or 4 wires simply by changing DIP switch settings.
A Single K8AB Can Monitor a 3-phase Power Supply Anywhere in the World
Reduces Maintenance Parts Inventory
SW3
ON
ON
OFF
OFF
SW4
ON
OFF
ON
OFF
K8AB-P
@
1
SW2
ON
P-N
138 V
133 V
127 V
115 V
OFF
P-P
240 V
230 V
220 V
200 V
K8AB-P
@
2
SW2
ON
P-N
277 V
240 V
230 V
220 V
OFF
P-P
480 V
415 V
400 V
380 V
1
2 3
K8AB-
@@
Phase to phase voltage (3 wires)
Phase to neutral voltage (4 wires)
L1
L2
L3
L1
L2
L3
N
400VAC
400VAC
400VAC
230VAC
230VAC
230VAC
