Skip to main content

Room thermostat, heating/cooling, surface-mounted super flat, 24V AC, silent (Triac)

KTRTB-251.108

Room thermostat, heating/cooling, surface-mounted super flat, 24V AC, silent (Triac)

This controller was specially developed for heating/cooling control in 2-pipe pipe systems for hotels, residential and commercial premises and can control up to 5 valve actuators (normally closed). The KTRTB detects the room temperature with an internal sensor and activates the heating or cooling according to the deviation from the setpoint. The use of a triac as a switching element instead of a relay/bimetal means that there is no switching noise during operation. With an internal switch, the existing contact input can be configured as an ECO contact or standby contact. ECO function: If this function is selected, the temperature is reduced by 3K in heating mode and increased by 3K in cooling mode. Standby function: If this function is selected, the controller is switched off (frost protection is still active). Surface/wall mounting (4-hole mounting on the flush-mounted box).
  • Art.-Nr.: MA700400

    Technical data

    Actual temperature display No
    Additional heating switch No
    Ambient temperature, lower value 0 °C
    Ambient temperature, upper value 40 °C
    Assembly Complete device
    Bearing temperature, lower value -20 °C
    Colour Pure white
    Control behaviour Switching PWM
    Control range, lower value 5 °C
    Control range, upper value 30 °C
    Cooling control function Yes
    Degree of contamination 2
    Depth 13,9 mm
    Design Berlin 1000
    Display No
    ECO function (reduction) Yes
    ECO input (reduction) 24 V AC, 50 Hz
    Electric connection Screw terminals
    Electronic control Yes
    External setting Yes
    Heating / cooling switch No
    Heating control function Yes
    Height 78,5 mm
    Housing material Plastic ABS
    Maximum air humidity (non-condensing) 95 % r.H
    Maximum power consumption < 0.8 W
    Maximum switching current 625 mA
    Maximum switching voltage 24 V AC, 50 Hz
    Mechanical range reduction Yes
    Medium Air, not aggressive
    Minimum switching voltage 24 V AC / 50 Hz
    Mounting / attachment Surface mounting
    Number of control ranges 1
    Number of outputs 1
    Number of outputs, cooling 1
    Number of outputs, heating 1
    On / Off switch No
    Operating voltage 24 V AC / 50 Hz
    Operation Rotary knob
    Output signal Switching PWM, 24 V AC, 50 Hz
    Potential free switching contact No
    Proportional range Approx. 1 K
    Protection class III
    RAL colour number (similar) 9010
    Safety and EMC In accordance with DIN EN 60730
    Scale Degree Celsius
    Sealable No
    Sensor element NTC internal
    Sensor external No
    Surface properties Gloss
    Switch/lamp night-time reduction No
    Switching contact NC contact
    Switching difference 0 K, as controlled almost constantly
    Switching difference, can be adjusted No
    Switching element Triac
    Switching power 15 W
    Temperature controller version Climate controller
    Thermal feedback No
    Type of protection IP30
    Width 78 mm
    With explosion protection No
    Circuit diagram  Circuit diagram

    Downloads

    Instructions

    Datasheet

    Photo Type Articlenumber Features Kind
    ET-01 MA990000 Adjustment knob for devices in B1000 series, degrees Celsius scale, pure white, gloss Spare part
    ZBOOA-040.100 H9100000 Heating valve actuator, 24V DC or 24VAC, closed when de-energised Accessories
    JZ-21 MN990006 Adapter frame for device in Berlin 1000 series Accessories
    ET-02 MA990001 Adjustment knob for devices in B1000 series, numerical scale 1...6, pure white, gloss Accessories
     

    Contact request

      This form is currently undergoing maintenance. Please try again later.

    Do you have questions or are you interested in our products?

    Please contact the electrician you trust or write us a message.

    Close Menu