The ELEKTRA ETN4 temperature controller, due to its multifunctionality and greatly facilitated User’s interface is especially suitable for the purposes of electric underfloor heating systems’ control, anti-frost protection of pipes, protection of buildings’ foundations and even control in cooling applications.

The controller is manufactured in compliance with the EN 60730-1 and EN 60730-2-9 technical standards. It features the possibility of operation with two separate, simultaneously connected sensors, where one will function as the limiting – so called protective – sensor, or ensuring the desired temperature level.




Technical data:

Power supply: 230V ~ 50/60Hz
Max. load: 16A, 230V ~ 50/60Hz
Installation: DIN-rail
Built-in switch: 1-pole, 16A
Control principle: ON/OFF or PWM/PI
Temperature range: -19.5°C ÷ +70°C
Limit sensor control temperature range:
Min.: -19.5/+70°C
Max.: -19.5/+70°C
Temperature setback or increase
with connected sensor: -19.5/+30°C
no connected sensor: 0-100%
Frost protection:
with connected sensor: 0-10°C
no connected sensor: 0-100%
Control hysteresis: 0.3-10K
Protection: IP 20
Frost protection and temperature increase or setback: with the voltage impulse 230V/~ 50/60 Hz
Working temperature: -20 ÷ + 55°C
Dimensions (H x W x D): 86 x 52.5 x 58mm
Modules: 3
Certificates: GOST-R, VDE
Product mark: CE


Temperature sensors:

Installation: in-floor or on-pipe
Protection: IP 67
Working temperature: -20°C ÷ +70°C




Installation: on-pipe
Protection: IP 44
Working temperature: -40°C ÷ +120°C





Installation: indoor, surface mounting
Protection: IP 20
Dimensions (H. x W. x D.): 80 x 80 x 16 mm
Working temperature: -20°C ÷ +70°C



Installation: surface mounting
Protection: IP 54
Dimensions (H. x W. x D.): 64 x 50 x 34 mm
Working temperature: -50°C ÷ +70°C

Icon of ETN4 - user manual ETN4 - user manual (868.1 KB)