What it monitors and how it connects
The K8AB-PA2 monitors three-phase mains for voltage asymmetry, phase loss, and phase sequence — a single SPDT relay output (1 Form C) rated 6A @ 250VAC switches on fault. Supply voltage is 220 ~ 480VAC.

Omron K8AB-PA series, Relay Output Monitor, Type Voltage Asymmetry, Phase Loss, Phase Sequence, 220-480VAC supply, SPDT 6A @ 250VAC, DIN Rail mount.
| Parameter | Value |
|---|---|
| Series | K8AB-PA |
| Type | Voltage Asymmetry, Phase Loss, Phase Sequence |
| Parameter | Value |
|---|---|
| Supply voltage | 220 ~ 480VAC |
| Parameter | Value |
|---|---|
| Output type | Relay |
| Parameter | Value |
|---|---|
| Operating temperature | -20°C ~ 60°C |
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
| Parameter | Value |
|---|---|
| Circuit | SPDT (1 Form C) |
| Delay time | 0.1 Sec ~ 30 Sec |
| Contact rating @ voltage | 6A @ 250VAC |
The K8AB-PA2 monitors three-phase mains for voltage asymmetry, phase loss, and phase sequence — a single SPDT relay output (1 Form C) rated 6A @ 250VAC switches on fault. Supply voltage is 220 ~ 480VAC.
Alternative models and sibling configurations in the same Omron series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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