MTN647595 Schneider Electric KNX Switch Actuator REG-K/4x230/16 4-Channel 16A Current Detection Manual

Four channels, sixteen amps, and a watchdog on every output. The Schneider Electric MTN647595 is the four-circuit member of the REG-K family equipped with per-channel current detection — officially Switch actuator REG-K/4x230/16 with manual mode and current detection, light grey. It switches four independent 230 V loads with a full 16 A per contact, and while it does so it continuously measures the current drawn by each circuit.

The value of that measurement grows with the cost of silence. In a hospital or clinic, a failed lamp in a corridor or an exam room must be noticed quickly; in retail, a sign that has burned out means a dark façade until someone walks past at night; in a plant or laboratory, a ventilation or equipment circuit that stops drawing current can hide a serious problem. With the MTN647595, each of those conditions becomes an event: the actuator compares the measured current against configurable thresholds and reports over-threshold and under-threshold conditions on the KNX bus, feeding visualisation, alarms or automatic reactions.

Four channels make this device the natural choice for the circuits that matter most in a building while leaving room for the rest of the board to use simpler actuators. Typical assignments include four critical lighting groups with lamp-failure detection, three monitored socket or equipment feeds plus one spare, or a small fan-coil and pump group where running state must be known. Limit values are set independently for every channel, so a lightly loaded sign circuit and a heavily loaded equipment circuit receive exactly the supervision they need. When a condition appears, the reaction is programmable: a status telegram to the building-management system, a scene change, or a feedback object that a visualisation panel can display immediately. The integrated counters can also support energy-awareness programmes: because the module tracks switching operations and operating time, facility managers gain insight into usage patterns without adding separate energy meters to every circuit.

None of the intelligence compromises the basics. Each contact is a true make contact rated 16 A at 230 V, with the load margins the REG-K line is known for. Manual mode is built in — all four outputs can be operated by hand on the device regardless of bus state — which keeps commissioning simple and guarantees local fallback. Screw terminals, an integrated bus coupling unit, a green ready LED and the light-grey REG housing round out a thoroughly conventional, serviceable installation.

Because the platform is standard and current, the MTN647595 ships with mature ETS applications and full documentation, and it integrates with any KNX sensor, panel or BMS gateway. Retrofitting it into an existing Schneider or Merten cabinet is a routine job for any KNX partner.

For specifiers who need four switched circuits and refuse to manage them blind, the MTN647595 is the pragmatic upgrade: the same 16 A switching you already trust, plus current eyes that turn hidden failures into visible, actionable messages.