Sixteen amps per channel, no contactor in between

The SAE-816 adds 8 relay channels of 16 A / 230 VAC to an MSA-810 master. Water heaters, electric radiators, socket circuits and large lighting groups switch directly — no intermediate contactor. Its channels do not count in the 40-channel limit at 10 A, so it is also the way to keep growing a large system.

What it does

Switch 8 heavy loads. 16 A resistive per channel, potential-free contacts, dual terminals per channel so two loads connect without a bridge.

Keep the functions. Switch or blind pair, delays, minimum on/off, staircase, scenes, blocking, hour counters.

Extend past 40 channels. SAE-816 channels sit outside the 10 A channel limit.

What it spares you

No contactor and no auxiliary relay for 16 A circuits.
No extra KNX address and no second ETS application.
No power wiring: fed by the master.

Scenarios

Load shedding: water heater and electric radiators switched from the KNX energy manager during peak tariff.
Holiday home: all socket circuits off from one KNX scene.
Workshop: high-bay lighting groups and a 3 kW extractor on 16 A channels.
Large villa: MSA-810 + 4 × SAE-810 already at 40 channels — SAE-816 adds 8 more.

Technical proof

Outputs: 8 relay channels (A–H), 16 A / 230 VAC resistive, potential-free, 5 million mechanical operations, dual terminals per channel
Modes: switch actuator per channel, blind/shutter per channel pair
Limits: max. 32 A total per actuator assembly; not counted in the 40-channel 10 A limit
Power: from the MSA-810 master through the side connector
Terminals: screw, up to 2.5 mm², 0.5 Nm; CB-15 bridges for a common phase
Housing: 4 SU (72 mm), 35 mm DIN rail, IP20; 0 to +45 °C
ETS: configured as a switching extension in the MSA-810 application, ETS5 / ETS6

One KNX address, up to 72 channels

The SAE-816 is part of the Elausys Universal KNX Actuator System: one MSA-810 master and up to 8 extensions, clipped together on the DIN rail with the side connector. The master carries the KNX address and the ETS application; every extension channel appears as a group object of the master. Switching, blinds, heating valves, dimming, DALI, LED and analogue outputs share one device, one application and one ElauPro project.

Local, standard, independent

All functions are standard KNX group objects configured in ETS5 / ETS6 — no proprietary app, no cloud dependency at runtime, no subscription. ElauPro generates the ETS application for your extension mix.

FAQ

Does it work on its own? No. It needs an MSA-810 master.

Can it switch a motor or a capacitive LED load at 16 A? 16 A is the resistive rating. De-rate for inductive and capacitive loads as with any relay actuator, or check the inrush of large LED drivers.

SAE-816 or SAE-810? SAE-816 for loads above 10 A or to go beyond 40 channels at 10 A; SAE-810 otherwise.

Why two terminals per channel? To connect two loads to one output directly, without a bridge.

Switching Extension 8x16A