The Schneider Electric MTN6600-0603 is a Merten KNX energy meter (REG-K/3×230 V/16 A) for measuring and monitoring consumption on up to three independent channels. Each channel supports different phases, with Class 1 active-energy measurement and data transmitted on the KNX bus for visualization, tariff logic, and load management.

Per channel there is a resettable energy counter and a total energy counter; values are retained after power failure. Up to eight threshold values drive energy-saving telegrams (switch, dimming, scene, temperature objects) and alarm functions. The device can sum external energy values received from other KNX meters or actuators with current detection — ideal alongside MTN6700 hybrid actuators on the same line.

Key Features — 3-Channel KNX Energy Metering

Measurement per Channel

• Channels: 3 (different phases possible).
• Max. current: 16 A per channel at AC 220/230 V, 50/60 Hz.
• Accuracy: Active energy Class 1; calculated power/current max. 10 %.
• Units: Adjustable Wh/kWh; total counter capacity > 2 million kWh.
• Tariffs: Four energy counters for separate tariff counting.

KNX Logic and Thresholds

• Thresholds: 8 adjustable limits with tolerance and delay — energy saving and alarms.
• Summation: Combine channel totals and external bus values from other devices.
• Time stamp: Consumption values with timestamp (external KNX timer).
• Nominal voltage: Adjustable 210–240 V via ETS.

At a Glance

Specification	Detail
Order code	MTN6600-0603
KNX bus supply	12.5 mA (typical)
Device width	4 modules (approx. 72 mm)
Mounting	35 mm DIN rail (TH35 / EN 60715)
Colour	Light grey

Full data are under Technical Specifications. Official Schneider documentation is under Downloads.

Applications and KNX Integration

• Sub-metering: Monitor lighting, HVAC, and tenant circuits on one KNX line.
• Load shedding: Trigger scenes or switch off loads via MTN6700-0116 actuators when thresholds are exceeded.
• Multi-line sites: Aggregate values from lines coupled with MTN6500-0101 or routed via MTN6500-0103.
• Bus power: Supply the line with MTN684064 or MTN6513-1202.
• HVAC monitoring: Complement MTN645094 fan-coil zones with per-circuit energy data.

Choosing Schneider KNX Metering and Actuators

Use MTN6600-0603 when you need three Class 1 metering channels with tariff counters and bus-based load management. For switching loads controlled by thresholds, pair with MTN6700-0108 or MTN6700-0304 (20 A) actuators depending on channel count and current rating.