Omron Monitoring Relay, 1 Phase, SPDT, DIN Rail, 2mA to 500mA, 24 V dc, 240V ac

RS Stock No.:: 111-3087
Mfr. Part No.:: K8DT-AS1CA
Brand:: Omron

Omron Monitoring Relay, 1 Phase, SPDT, DIN Rail, 2mA to 500mA, 24 V dc, 240V ac

Subtotal (1 unit)*

£117.26

(exc. VAT)

£140.71

(inc. VAT)

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In Stock

Plus 6 unit(s) shipping from 27 July 2026

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Units	Per unit
1 +	£117.26

*price indicative

RS Stock No.:: 111-3087
Mfr. Part No.:: K8DT-AS1CA
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	SPDT
	Mount Type	DIN Rail
	Minimum Current Sensed	2mA
	Maximum Current Sensed	500mA
	Power Consumption	2.5VA
	Current Sensitivity	Overcurrent, Undercurrent
	Terminal Type	Push-in
	Time Delay	250 ms
	IP Rating	IP20
	Supply AC Voltage	240V ac
	Relay Contact Current	5A
	Supply DC Voltage	24 V dc
	Minimum Operating Temperature	-20°C
	Maximum Operating Temperature	60°C
	Height	90mm
	Length	90mm
	Standards/Approvals	RoHS, UL 60947-5-1, EN 60947-5-1
	Width	17.5mm
	Series	K8DT-AS

	Select all
	Brand Omron
	Product Type Monitoring Relay
	Electrical Phase 1
	Contact Configuration SPDT
	Mount Type DIN Rail
	Minimum Current Sensed 2mA
	Maximum Current Sensed 500mA
	Power Consumption 2.5VA
	Current Sensitivity Overcurrent, Undercurrent
	Terminal Type Push-in
	Time Delay 250 ms
	IP Rating IP20
	Supply AC Voltage 240V ac
	Relay Contact Current 5A
	Supply DC Voltage 24 V dc
	Minimum Operating Temperature -20°C
	Maximum Operating Temperature 60°C
	Height 90mm
	Length 90mm
	Standards/Approvals RoHS, UL 60947-5-1, EN 60947-5-1
	Width 17.5mm
	Series K8DT-AS

English Datasheet

COO (Country of Origin):: CN

Omron K8DT-AS Series Monitoring Relay, 100 to 240V AC Supply Voltage, 5A Relay Contact Current - K8DT-AS1CA

This monitoring relay provides continuous current surveillance for single-phase systems, detecting both overcurrent and undercurrent conditions to support motor and equipment protection. It accepts universal AC supply voltages or a dedicated DC supply and is designed for DIN-rail mounting in control panels and switchgear.

Features and Benefits:

• Adjustable sensing range 2mA-500mA for precise detection
• Single-pole changeover contact rated 5A for load switching
• 250ms timing delay to prevent nuisance trips from transients
• Works from 100-240V AC or 24V DC supply for installation flexibility
• Push-in terminals for Faster wiring and secure connections
• Low power consumption 2.5VA to minimise auxiliary loading

Applications

• Suitable for protecting motors against phase-loss and stall conditions
• Ideal for integration into automated control panels on DIN rail
• Used for monitoring current in industrial pump assemblies
• Can be used for fault detection in conveyor drive systems
• Used with single-phase distribution circuits in machinery

What environmental temperatures can it operate within?

It is specified to function between -20°C and 60°C, enabling use in typical factory and plant environments.

How is the device mounted and connected in assemblies?

It clips onto a DIN rail and uses push-in terminals for direct conductor insertion without additional connectors.

What mechanical protection does the enclosure provide?

The unit has IP20 ingress protection, suitable for enclosed panels but not for direct exposure to liquids.

What standards approvals does it meet for electrical safety?

It complies with EN 60947-5-1 and UL 60947-5-1 and meets RoHS requirements.

How many electrical phases does it monitor and what contact configuration is provided?

It monitors a single electrical phase and provides an SPDT contact arrangement for signalling or control.

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