The K8DT-TH1CA is an active temperature monitoring relay from Omron’s K8DT series, accepting thermocouple or RTD inputs via push-in terminals. The SPDT relay output is rated 5 A at 250 VAC, sized for alarm or control circuits in panel applications. Supply voltage is fixed at 100–240 VAC; no delay timer on board, so the relay operates directly on the temperature threshold.

Omron K8DT-TH1CA Temperature Monitoring Relay, SPDT 5A
MPNK8DT-TH1CA
Active
Omron K8DT-TH1CA, K8DT series temperature monitoring relay, SPDT output, 5A @ 250VAC, 100-240 VAC supply, DIN rail mount.
$157.66 – $181.35Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Identification
| Parameter | Value |
|---|---|
| Series | K8DT |
| Type | Temperature Monitoring |
Electrical
| Parameter | Value |
|---|---|
| Supply voltage | 100 ~ 240VAC |
I/O
| Parameter | Value |
|---|---|
| Output type | Relay |
Environmental
| Parameter | Value |
|---|---|
| Operating temperature | -20°C ~ 60°C |
Mechanical
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
Other specifications
| Parameter | Value |
|---|---|
| Circuit | SPDT (1 Form C) |
| Delay time | No Delay |
| Contact rating @ voltage | 5A @ 250VAC |
Product details
Frequently asked questions
What type of device is the K8DT-TH1CA?
It is a temperature monitoring relay, accepting thermocouple or RTD sensor inputs, with an SPDT relay output rated 5 A at 250 VAC.
Does the K8DT-TH1CA have delay timer functionality?
No, the part has no delay time. The relay switches immediately when the temperature setpoint is crossed.
MPN
K8DT-TH1CA