User Manual

ManualsBrandsSiemens ManualsThermostats (temperature controller with sensor)Limit Thermostats RAK-TB.1..M

206

Limit Thermostats

RAK-TB.1..M

Electromechanical TB

• Limit thermostat with single-pole changeover microswitch

• Switching capacity contact connection 11-12 16 (2.5) A, AC 250 V

Terminal for alarm contact connection 11-13 0.5 A, AC 250 V

• Time constant conforming to DIN EN 14597

• 3

mounting choices: pipe, pocket or wall mounting

• Switch-off temperature can be checked through the viewing window in the

housing

• Internal reset facility covered by removable threaded nipple

• Push-in terminals for fast installation

Use

Typical applications:

• Heat generation plant

• For general use in heating, ventilation and air conditioning plant

• Underfloor heating systems (RAK-TB.1400-M)

Function

When the switch-off temperature is reached, contact connection 11-12 changes over to

contact connection 11-13 (alarm) and the thermostat remains tripped in this position.

When the temperature of the medium falls below the value of the switching differential,

the limit thermostat (TB) must be manually reset after removal of the threaded nipple.

If the probe has cooled down to a temperature below approx. -20°C, the control

current circuit opens, however, automatically closes again, when the temperature rises.

CE1N1206en

2014-07-30

Building Technologies

Summary of content (4 pages)

PAGE 1
206 Limit Thermostats RAK-TB.1..M Electromechanical TB • Limit thermostat with single-pole changeover microswitch • Switching capacity contact connection 11-12 16 (2.5) A, AC 250 V Terminal for alarm contact connection 11-13 0.
PAGE 2
Type summary Product No. Stock number Degree of Switch-off protection temperature Capillary tube length Scope of delivery Pocket (for RAK….B) / Clamping band for max. RAK-TB.1410B-M S55700-P109 IP43 50...70 °C 700 mm pipe dia. 100 mm /Cable gland M16x1.5 mm / RAK-TB.1420S-M S55700-P110 IP43 65...80 °C Mounting instructions 1) Pocket ALT-SB100, brass nickel-plated, PN10 RAK-TB.1400S-M S55700-P108 IP43 45...60 °C Pocket length1) --100 mm ---- Accessories Refer to Data Sheets N1193 and N1194.
PAGE 3
Disposal The devices are considered electronics devices for disposal in terms of European Directive 2012/19/EU and may not be disposed of as domestic waste. • Dispose of the device via the channels provided for this purpose. • Comply with all local and currently applicable laws and regulations.
PAGE 4
General data Housing colors base RAL 7001 (dark-grey) cover RAL 7035 (light-grey) Dimensions of sensing element Capillary length (all types) Min. bending radius of capillary Construction Carrier of switching mechanism Capillary tube and sensing element Diaphragm Contacts Weight of standard set: RAK...B RAK...S 6.5 mm dia. x 73 mm resp. 87mm 700 mm R min. = 5 mm plastic copper stainless steel Ag.1000/1000 (silver) 0.33 kg 0.27 kg 1) The documents can be downloaded from http://siemens.com/bt/download.