Omron Monitoring Relay, 1 Phase, SPST, DIN Rail, 10A to 200A, 0 V ac, 0 V ac

RS Stock No.:: 111-3098
Mfr. Part No.:: K8DT-AS3TD
Brand:: Omron

Omron Monitoring Relay, 1 Phase, SPST, DIN Rail, 10A to 200A, 0 V ac, 0 V ac

Subtotal (1 unit)*

£109.38

(exc. VAT)

£131.26

(inc. VAT)

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Shipping from 14 May 2026

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Units	Per unit
1 +	£109.38

*price indicative

RS Stock No.:: 111-3098
Mfr. Part No.:: K8DT-AS3TD
Brand:: Omron

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Omron
	Product Type	Monitoring Relay
	Electrical Phase	1
	Contact Configuration	SPST
	Mount Type	DIN Rail
	Minimum Current Sensed	10A
	Maximum Current Sensed	200A
	Power Consumption	1.8VA
	Current Sensitivity	Undercurrent, Overcurrent
	Terminal Type	Push-in
	IP Rating	IP20
	Time Delay	250 ms
	Relay Contact Current	10 to 200 A
	Supply DC Voltage	0 V ac
	Minimum Operating Temperature	-20°C
	Supply AC Voltage	0 V ac
	Maximum Operating Temperature	60°C
	Series	K8DT-AS
	Length	90mm
	Height	90mm
	Width	17.5 mm
	Standards/Approvals	EN 60947-5-1, UL 60947-5-1, RoHS

	Select all
	Brand Omron
	Product Type Monitoring Relay
	Electrical Phase 1
	Contact Configuration SPST
	Mount Type DIN Rail
	Minimum Current Sensed 10A
	Maximum Current Sensed 200A
	Power Consumption 1.8VA
	Current Sensitivity Undercurrent, Overcurrent
	Terminal Type Push-in
	IP Rating IP20
	Time Delay 250 ms
	Relay Contact Current 10 to 200 A
	Supply DC Voltage 0 V ac
	Minimum Operating Temperature -20°C
	Supply AC Voltage 0 V ac
	Maximum Operating Temperature 60°C
	Series K8DT-AS
	Length 90mm
	Height 90mm
	Width 17.5 mm
	Standards/Approvals EN 60947-5-1, UL 60947-5-1, RoHS

English Datasheet

K8DT-AS Monitoring Motor Protection Relay.

• Downsize control panels.

• Reduced wiring.

• Detects errors in Motors and other equipment via current changes.

• Use in either over current or under current mode.

• Function as an alarm.

• Set threshold values.

• Alarm output can be set as a relay or transistor output.

• Input signal – Voltage, current, water level electrode and temperature (thermocouple or platinum resistance thermometer) can be input.

• Lower power consumption.

• Long term contact reliability.

• Reliable in poor noise environments.

• Slim profile 17.5 mm

K8DT-AS3TD 24 VAC/DC Model.

• Current Monitoring Relay.

• Single phase.

• Transistor Output.

• Power supply 24 V ac/dc.

• Setting range 10 to 100 A ac/dc, 20 to 200 A ac/dc

• K8DT-AS3 designed to be used with Omron K8AC-CT200L Current Transformer – stock number 6118602.

Features and Benefits.

• Power supply 100 to 240 V ac, 50/60 Hz, 24 V dc

• Manual/ Automatic reset (switchable)

• Manual reset – Turn OFF the power supply for minimum of 1 sec.

• Start-up lock time 0 to 30 s.

• Green LED Power (PWR)

• Yellow LED output (OUT)

• Red LED Relay output (ALM)

• DIN Rail Mounted

• Weight 100 g

• Case material PC, UL 94 V-0.

• Colour N1.5

• Protection IP20 (terminals)

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

K8DT-AS/AW Single Phase Current Relay

Omron K8DT-AS/AW single phase current relays detect errors in motors and other equipment through current changes.

Monitor AC or DC currents with one Relay.

Use with commercially available current transformers

Width of 17.5 mm to reduce space required in panels.

Push-In Plus Terminal that reduce wiring work.

Double-insertion holes for crossover wiring (all terminals).

Omron K8DT Series Control Relays

Omron K8DT measuring and monitoring relays are part of the Value Design for Panel concept that takes control panel design and manufacturing to a new level. The K8DT series protect important equipment from damage using various measuring and monitoring relays that conform to international safety standards. Low power consumption and low heat generation design offer a long service life.

Space Saving

The K8DT series can help downsize control panels by reducing the width between wiring ducts and void panel space. The slim body allows space to mount more devices in the same size of control panel to increase control panel functionality.

Push-In Plus Terminals

Push-In Plus terminal blocks on all K8DT relays reduce the time and work involved in wiring. The Push-In Plus terminals allow solid and stranded wires with pin terminals or ferrules to be inserted without the need for tools.

Note

K8DT-AS allow use in either overcurrent or undercurrent mode.
K8DT-AW allow overcurrent and undercurrent monitoring simultaneously

Standards

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