{"id":10776,"date":"2025-11-05T10:52:07","date_gmt":"2025-11-05T09:52:07","guid":{"rendered":"https:\/\/alre.de\/produkte\/frost-protection-thermostat-12m-ip40-hysteresis-1-5k-stw-indoor-setting\/"},"modified":"2025-11-05T10:53:15","modified_gmt":"2025-11-05T09:53:15","slug":"frost-protection-thermostat-12m-ip40-hysteresis-1-5k-stw-indoor-setting","status":"publish","type":"produkte","link":"https:\/\/alre.de\/en\/produkte\/frost-protection-thermostat-12m-ip40-hysteresis-1-5k-stw-indoor-setting\/","title":{"rendered":"Frost protection thermostat, 12m, IP40, hysteresis 1.5K, STW, indoor setting"},"content":{"rendered":"[vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” column_border_width=”none” column_border_style=”solid” bg_image_animation=”none”][vc_column_text]\n
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You are here: Plant engineering<\/a> \/ Kapillar-, Feuchtraum- und Frostschutzthermostate, Schaltschrankregler<\/a> \/ Frostschutzthermostate\/-w\u00e4chter<\/a><\/div>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row]\n[vc_row type=”in_container” top_padding=”80″ full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/3″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” column_border_width=”none” column_border_style=”solid” bg_image_animation=”none”]\n

RTKSA-204.300<\/h1>\n

Frost protection thermostat, 12m, IP40, hysteresis 1.5K, STW, indoor setting<\/h2>\n
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The RTKSA frost protection regulators have been specially developed for air or water-side frost protection of hot water heating coils and heat exchangers in ventilation, heating or air conditioning systems. The capillaries are active along their entire length. The device responds when the minimum response length of the capillary (40 cm) reaches the set scale value. In the event of a sensor break, contact 1-2 is permanently open and contact 1-4 is permanently closed. Unlocking is no longer possible. Note: Mounting clamps, thermowells and protective coils are not included in the scope of delivery and must be ordered separately. Air-side application: For frost protection of heating registers, the capillary is clamped in front of the heating register to be protected with mounting clamps. The JZ-05\/6M (metal) or JZ-05\/6 K (plastic) mounting clamps must be used for this purpose.<\/div>\n
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    Art.-Nr.: KA020405<\/h5>\n[\/vc_column][\/vc_row]\n[vc_row type=”full_width_background” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”0″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” column_border_width=”none” column_border_style=”solid” bg_image_animation=”none”][tabbed_section style=”minimal” alignment=”left” spacing=”default” tab_color=”Accent-Color” cta_button_style=”accent-color” icon_size=”24″][tab icon_family=”none” title=”Technical Data” id=”1615889093454-3″ tab_id=”1615889093455-1″][vc_row_inner column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” text_align=”left”][vc_column_inner column_padding=”padding-2-percent” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”right” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” column_border_width=”none” column_border_style=”solid” bg_image_animation=”none”][vc_column_text]\n

    Technical Data<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Bearing temperature<\/td>\n\u201330\u202f\u2026\u202f80\u00a0\u00b0C<\/td>\n<\/tr>\n
    Capillary length<\/td>\n12 m<\/td>\n<\/tr>\n
    Colour<\/td>\nanthracite<\/td>\n<\/tr>\n
    Contact interlocking<\/td>\nNo<\/td>\n<\/tr>\n
    Control range<\/td>\n-10\u202f\u2026\u202f15\u00a0\u00b0C<\/td>\n<\/tr>\n
    Cooling control function<\/td>\nYes<\/td>\n<\/tr>\n
    Device version<\/td>\nsurface-mounted unit<\/td>\n<\/tr>\n
    Dimensions (W x H x D)<\/td>\n53\u202fmm x 146,8\u202fmm x 62,9\u202fmm<\/td>\n<\/tr>\n
    Electric connection<\/td>\nPush-in clamp<\/td>\n<\/tr>\n
    Electronic control<\/td>\nNo<\/td>\n<\/tr>\n
    External setting<\/td>\nNo<\/td>\n<\/tr>\n
    Function type (systems engineering)<\/td>\nSTW<\/td>\n<\/tr>\n
    Heating control function<\/td>\nYes<\/td>\n<\/tr>\n
    Internal setting<\/td>\nYes<\/td>\n<\/tr>\n
    Max. air humidity (non-condensing)<\/td>\n95 % r.H.<\/td>\n<\/tr>\n
    Max. Sensor temperature<\/td>\n120 \u00b0C<\/td>\n<\/tr>\n
    Max. switching current<\/td>\n16 (2,5)\u00a0A, 0,25\u00a0A, 2 (0,4)\u00a0A, 0,25\u00a0A<\/td>\n<\/tr>\n
    Max. switching voltage<\/td>\n230\u202fVAC, 50\/60 Hz \/ 230\u202fVDC<\/td>\n<\/tr>\n
    Min. switching current<\/td>\nat 24 V (AC\/DC) min. 100 mA<\/td>\n<\/tr>\n
    Min. switching voltage<\/td>\n24\u202fVAC, 50 Hz \/ 24\u202fVDC<\/td>\n<\/tr>\n
    Mounting\/attachment<\/td>\nwall mounting<\/td>\n<\/tr>\n
    Number of control ranges<\/td>\n1<\/td>\n<\/tr>\n
    Number of outputs<\/td>\n2<\/td>\n<\/tr>\n
    Operation<\/td>\ninternal setpoint adjuster<\/td>\n<\/tr>\n
    Output signal<\/td>\nswitching<\/td>\n<\/tr>\n
    Potential free switching contact<\/td>\nYes<\/td>\n<\/tr>\n
    Protection class<\/td>\nI<\/td>\n<\/tr>\n
    Safety and EMC<\/td>\nin accordance with DIN EN 60730<\/td>\n<\/tr>\n
    Scale<\/td>\nDegree Celsius<\/td>\n<\/tr>\n
    Sensor element<\/td>\ncapillary tube<\/td>\n<\/tr>\n
    Sensor material<\/td>\nCu<\/td>\n<\/tr>\n
    Switching contact<\/td>\ntwo-way contact<\/td>\n<\/tr>\n
    Switching difference, can be adjusted<\/td>\nNo<\/td>\n<\/tr>\n
    Switching differential<\/td>\nHeating\/cooling: 1,5\u00a0K<\/td>\n<\/tr>\n
    Switching element<\/td>\nmicroswitch<\/td>\n<\/tr>\n
    With explosion protection<\/td>\nNo<\/td>\n<\/tr>\n<\/table>\n
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