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Omron K8AC-H21CC-FLK — Process / Temperature Controllers

Omron K8AC-H21CC-FLK Heater Element Detector, 0.20~2.20A

MPNK8AC-H21CC-FLK

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Omron K8AC-H series Heater Element Detector, order code K8AC-H21CC-FLK, input range 0.20~2.20A, 85~264VAC supply, relay output, RS-485 CompoWay/F communications, DIN rail mount.

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Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

K8AC-H21CC-FLK — Identification
Parameter	Value
Series	K8AC-H
Type	Heater Element Detector

K8AC-H21CC-FLK — Electrical
Parameter	Value
Supply voltage	85 ~ 264VAC

K8AC-H21CC-FLK — Performance
Parameter	Value
Control method	On/Off
Features	Heater Fault Detection

K8AC-H21CC-FLK — I/O
Parameter	Value
Input range	0.20 ~ 2.20A
Output type	Relay

K8AC-H21CC-FLK — Communication
Parameter	Value
Communication interfaces	RS-485 (CompoWay/F)

K8AC-H21CC-FLK — Display
Parameter	Value
Display type	LED - Red Characters
Characters per row	4

K8AC-H21CC-FLK — Environmental
Parameter	Value
Operating temperature	-10°C~55°C

K8AC-H21CC-FLK — Mechanical
Parameter	Value
Mounting type	DIN Rail
Termination style	Spring Terminal

K8AC-H21CC-FLK — Other specifications
Parameter	Value
Weight	0.441 lb (200.03 g)

Product details

Heater fault detection with RS-485

The Omron K8AC-H21CC-FLK is a Heater Element Detector from the K8AC-H series, designed to monitor heater current and signal a fault when the load drops below the set threshold. It accepts an input range of 0.20 ~ 2.20A and operates on a universal supply of 85 ~ 264VAC. A relay output provides the alarm contact, while RS-485 communications (CompoWay/F protocol) allow the unit to report status to a PLC or SCADA system over a serial bus.

The 4-digit red LED display shows the measured current or a fault code, readable from across the panel.

Frequently asked questions

Where can I buy the Omron K8AC-H21CC-FLK?

The K8AC-H21CC-FLK is available to order through independent distribution.

What is the input range of K8AC-H21CC-FLK?

The input current range is 0.20 ~ 2.20A AC, suitable for monitoring single heater elements or small three-phase heater banks via a current transformer.