Omron Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail

RS Stock No.:: 819-3258
Mfr. Part No.:: K8AKPM1200240VAC
Brand:: Omron

Omron Phase Monitoring Relay, 3 Phase, SPDT, DIN Rail

Bulk discount available

Subtotal (1 unit)**

$356.80

(exc. GST)

$410.32

(inc. GST)

On back order for despatch 21/08/2025, delivery within 7 working days from despatch date.*

* Delivery dates may change based on your chosen quantity and delivery address.

FREE delivery for orders over $60 ex GST

Units	Per unit
1 - 2	$356.80
3 - 4	$342.51
5 +	$328.26

**price indicative

RS Stock No.:: 819-3258
Mfr. Part No.:: K8AKPM1200240VAC
Brand:: Omron

English Datasheet

Omron K8AK-PW/PM/PH/PA Monitoring Relays

The Omron K8AK series monitoring relays are expertly designed for accurate and reliable monitoring for industrial facilities and equipment.
The K8AK-PW/PM monitoring relays are designed to bear greater resistance to inverter noise, suitable for monitoring 3-phase power supplies.
The K8AK-PH relays are ideal for preventing issues with motor operation and assisting phase loss detection.
The K8AK-PA relays are suitable for 3-phase voltage asymmetry monitoring.

K8AH-PM1 Monitoring Relay.

• Resistant to inverter noise.

• Monitors over voltage, under voltage, phase sequence and loss for 3 and 4 wire power supplies.

• Switch setting.

• 2 x SPDT output relays.

• 5 A (resistive load) at 250 V ac

• Global power specification supported by one switchable unit.

• Output status monitored by using LED indicator.

K8AK-PM1 Model.

Monitoring Relay.

3-phase 3 wire mode, 200, 220, 230, 240 V ac.

3-phase 4 wire mode, 115, 127, 133, 138 V ac.

3-phase 3 or 4 wire input rages is switched using a DIP switch.

Power supply voltage is the same as the rated input value.

Features and Benefits.

• Input load 4.4 VA

• Automatic reset method.

• Power on LOCK time 1 s/5s (changed with the DIP Switch).

• Two SPDT relays NC (normally closed)

• Power (PWR) indicator – Green.

• Relay (RY) output – Yellow.

• Over / under - Red

• Case is PC and ABS, UL 94-V-0, N1.5.

• Weight 150 g.

• DIN Rail mounted.

• Protection IP 20

What is a Monitoring / Measuring Relay?

A monitoring / measuring relay is a protective control device, various types are available suiting what you wish to monitor. The relays receive input signals then monitor them and then output an alarm signal when a set value is reached (alarm relays). The relays protect your equipment against over voltage and over current faults. Monitoring relays monitor AC power supplies, voltage and current, analogue signals detecting unusual activity in equipment against set alarm thresholds.

Types of Monitoring Relays Available?

• Motor protection relays
• Temperature monitoring relays
• Water level control relays
• Voltage
• Current

For these non-cancellable (NC), and non-returnable (NR) products, Terms and Conditions apply.

Standards

EN 60947-5-1, UL 508, IP 20

Attribute	Value
Monitoring Application	Phase
Electrical Phase	3
Contact Configuration	SPDT
Mounting Type	DIN Rail
Phase Sensitivity	Overvoltage, Phase Loss, Phase Sequence, Undervoltage
Time Delay	0.1 → 30s
Series	K8AK-PM
Maximum Operating Temperature	+60°C
Minimum Operating Temperature	-20°C
Operating Temperature Range	+60°C
Dimensions	100 x 22.5 x 90mm
Height	90mm
Length	100mm
Width	22.5mm
Terminal Type	Screw