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Omron K8DT-PZ1CN — Process / Temperature Controllers

Omron K8DT-PZ1CN Phase Loss & Sequence Relay, 200-240VAC

MPNK8DT-PZ1CN
Active

Omron K8DT series three-phase monitoring relay, Type Phase Loss / Phase Sequence, SPDT relay output, 200-240VAC supply, DIN rail mount, adjustable delay 0.1-30 sec.

$195.66Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

K8DT-PZ1CN — Identification
ParameterValue
SeriesK8DT
TypePhase Loss, Phase Sequence
K8DT-PZ1CN — Electrical
ParameterValue
Supply voltage200 ~ 240VAC
K8DT-PZ1CN — I/O
ParameterValue
Output typeRelay
K8DT-PZ1CN — Environmental
ParameterValue
Operating temperature-20°C~60°C
K8DT-PZ1CN — Mechanical
ParameterValue
Mounting typeDIN Rail
K8DT-PZ1CN — Other specifications
ParameterValue
CircuitSPDT (1 Form C)
Delay time0.1 Sec ~ 30 Sec
Contact rating @ voltage5A @ 250VAC

Product details

Three-phase line watchdog for motor protection

The Omron K8DT-PZ1CN is a dedicated three-phase monitoring relay that detects both phase loss and incorrect phase sequence on a 200-240VAC supply. It's the kind of part you spec into a motor starter panel when losing a phase or getting a rotation reversal would wreck the load — pumps, conveyors, compressors. The SPDT relay output switches 5A at 250VAC, so it can directly drop out a contactor coil or trigger an alarm without an interposing relay.

Adjustable delay and mounting

The delay time is adjustable from 0.1 to 30 seconds, which lets you ride through momentary supply dips without nuisance tripping — set it short for critical motor protection, longer for feeder circuits that see brief sags.

Frequently asked questions

Where can I buy the Omron K8DT-PZ1CN and get a price?

The K8DT-PZ1CN is available to order through independent distribution. Submit an RFQ for current pricing and lead time — availability is confirmed at quote time, not on a stock shelf.

What is the exact output specification of the K8DT-PZ1CN?

The relay output is SPDT (1 Form C) rated 5A at 250VAC. That's the contact rating for switching the load — motor contactor coil, alarm lamp, or PLC input.

What voltage does the K8DT-PZ1CN require to operate?

The supply voltage is 200-240VAC. That's both the power supply for the relay electronics and the three-phase line it monitors — no separate control power needed.

How does the K8DT-PZ1CN detect phase sequence?

It compares the phase rotation of the three incoming lines against an internal reference. If the sequence is reversed (A-B-C vs A-C-B), the relay de-energises and the output changes state. The same circuit also detects a lost phase by sensing the voltage imbalance.

MPN
K8DT-PZ1CN