Omron K8AK-AS3 100-240VAC Current Monitoring Relay – Single-Phase Over/Under Current 10–200A AC (External CT), 22.5 mm, 1×SPDT

The Omron K8AK-AS3 100-240VAC is a compact single-phase current monitoring relay for detecting over-current or under-current on AC loads. Powered by a wide 100–240 VAC control supply and just 22.5 mm wide for DIN-rail panels, it uses an external current transformer (CT) to monitor 10–200 A AC. A robust 1×SPDT relay output, front rotary settings, and status LED make it quick to deploy in OEM panels and retrofit protection schemes.

Technical Specifications

Model: K8AK-AS3 100–240VAC Omron
Series: K8AK Current Monitoring Relays
Function: Single-phase overcurrent or undercurrent detection (AC)
Setting Range: 10–200 A AC (via external CT)
Output Type: Relay (SPDT)
Supply Voltage: 100–240 VAC
Installation Type: DIN rail mount
Terminal Type: Screw terminals
Body Colour: Black
Ideal For: Motor, pump, heater, and feeder protection in industrial control panels

Electrical Specifications

• Control Supply: 100–240 VAC
• Monitored Current: 10–200 A AC (requires external CT)
• Output Contacts: 1×SPDT relay
• Power Consumption: Low-power control electronics (see datasheet)
• Response: Fast detection for reliable trip signaling
• External CT: Supported (select ratio to suit application)

I/O & Control Interface

• Front Controls: Rotary dials for range/setpoint adjustment
• Status Indication: LED for power/relay state
• Connections: Screw terminals for supply, CT input, and relay output
• Integration: Works with standard panel wiring practices

Mechanical Specifications

• Width: 22.5 mm
• Mounting: 35 mm DIN rail
• Housing: Industrial enclosure for control panels
• Colour: Black

Environmental Specifications

• Operating Temperature: See datasheet
• Storage Temperature: See datasheet
• Humidity/Vibration: Rated for industrial environments
• Ingress Protection: Panel-mounted device (see datasheet)
• Application Category: Industrial monitoring and automation control

Compliance & Certifications

• CE Marked: Yes
• UL / cUL: Yes (model/region dependent)
• RoHS: Compliant
• Standards: Refer to K8AK-AS series datasheet

Key Features & Benefits

✅ Wide Measurement via CT. Monitors 10–200 A AC using an external CT.

✅ Dual Protection Modes. Detects both overcurrent and undercurrent faults.

✅ Universal Supply. Operates from 100–240 VAC control power.

✅ Panel-Friendly. Slim 22.5 mm body saves DIN-rail space.

✅ Simple Setup. Front rotary dials with clear LED status.

✅ Flexible Integration. Screw terminals and CT compatibility for scalable designs.

📦 Order the Omron K8AK-AS3 100-240VAC from Drive Outlet Megastore

At Drive Outlet Megastore, we offer unbeatable Omron K8AK-AS3 100-240VAC prices — a dependable, compact relay for precise single-phase current monitoring with CT-based sensing across a wide amperage range.

Check stock now or request a quote.

Monitor confidently. Protect reliably. Omron engineered — only at Drive Outlet Megastore.