KWS-306 Voltmeter Ammeter Power Meter AC 85-290V 80A 3-phase 4-wire DIN-Rail Meter Power Failure Protection Function

KWS-306 Three-Phase DIN-Rail Energy and Protection Meter

KWS-306 is a DIN-rail meter for AC three-phase, four-wire systems. It combines voltage, current, power, energy, frequency, power-factor and temperature monitoring with configurable protection functions in one color-display unit.

Measurement Range

• AC voltage: 85-290V.
• Current: 0-80A.
• Power: 0-23kW.
• Frequency: 50-60Hz.
• Power factor: 0.00-1.00 PF.
• Energy counter: 0-99,999,999kWh.
• Temperature range: -20 to 150°C.
• Panel timer: up to 999 hours.

Protection and Control Functions

• Over-voltage, under-voltage, over-current and over-power protection.
• Voltage imbalance, current imbalance and over-temperature protection.
• Power-off memory, timed shutdown, screen saver settings, energy reset and timer reset.
• Large color VA display and a magnetic-latching relay design are listed for the product.

Choose the Correct Model

• KWS-306 Normal: standard meter version.
• KWS-306L With RS485: version with RS-485 communication.
• KWS-306WF With Wifi: WiFi-enabled version.

Confirm the required communication method before checkout. The Normal, RS-485 and WiFi versions are different hardware options.

Installation Notes

• Designed for 35mm DIN-rail mounting; product dimensions are approximately 86.5 × 74 × 65mm and the display area is approximately 55 × 34mm.
• Package scope: meter, user manual and NTC sensing wire, as listed by the source.
• This product is installed in AC distribution equipment. Isolate power and use a qualified electrician where required by local regulations.
• Confirm system voltage, current, wiring arrangement and protective-device coordination before installation.