GAS VALVE TEMPERATURE SENSOR
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COMBINED TEMPERATURE CONTROLLER AND LIMITER WITH POSITIVE SAFETY 1+2 POLES

COMBINED TEMPERATURE CONTROLLER AND LIMITER WITH POSITIVE SAFETY 2+2 POLES OR 3+3 POLES

These safety devices automatically switch off the current in the controlled circuit as the temperature is reached, and switch it on again as the temperature falls below the set threshold value. The temperature of the controlled medium is thus maintained within a narrow zone. At the control failure, these devices automatically switch off the current in the controlled circuit as the pre-set temperature limit is reached, thus preventing overheating. Once the defection of the temperature regulation was repaired, in voltage-free state, and after re-cooling to room-temperature (25 +/-5°C), the limiter/protective guard can be re-started manually.

Failsafe operation means that in case of mechanical damage or leaking of the filling-fluid, the safety cut-out will perform one last switch and break the electrical circuit.
Working tepmerature range: 0 – 150 °C
Areas of application:
– household heating boilers
– hot-water boilers and hot-water storage tnaks

Trouble-free operation is conditioned by proper heat transfer between the controlled medium and the controller’s and limiter’s sensors.

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Description

TECHNICAL DATA

Lifetime: R, W: 50.000 cycles Way of operation: R, W: 2C; B
B, SB   1000 cycles SB: 2BG/2AG/2AGM
Switching power: 30(4)A-4(1)A/250 V~; Sensor: Coiled: Cu: Ø5; Ø6; Ø8
INOX: Ø3; Ø4; Ø6
20(4)A-4(1)A/250 V~;
16(4)A-4(1)A/400 V~;
Max. temp. for the main unit: 85 °C / 150 °C Protection class: Class I. / IP 00
Work environment: Normal Heat and fire resistance: D
Leakage current resistance: ≥ 175 Working range: 0-150°C
Max. sensor temperature: Upper switching value +15% Surface protection: Galvanized
Lenght of the shaft: 14-50mm Electrical connections: A 6,3×0,8 tab contact
M3 screw

TYPE EXAMPLES

Type Code Type mark Switch -off temp.
°C		 ∆T Sensor
ØDxL1/mm/;		 Capillary
Ød x L2 /mm/		 Protection tube
L3 /mm/		 Lenght of the
shaft Lt /mm/
5272-0-302-0 RTB-0-K-M-0 10-85 100°C (0/-8) 4 ± 2 6,5 x 110 Cu 1,4 x 650 480 16
5272-0-302-1 RTB-0-K-M-0 7-77 95°C (±4) 4 ± 2 6,5 x 110 Cu 1,4 x 650 480 16
5272-0-302-2 RTB-0-K-M-1 10-85 100°C (0/-8) 4 ± 2 6,5 x 110 Cu 1,4 x 650 480 16

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OUTLINE DRAWING

CATALOGUE

ENTIRE CATALOGUE

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COMBINED TEMPERATURE CONTROLLER AND LIMITER WITH POSITIVE SAFETY 1+2 POLES

These safety devices automatically switch off the current in the controlled circuit as the temperature is reached, and switch it on again as the temperature falls below the set threshold value. The temperature of the controlled medium is thus maintained within a narrow zone. At the control failure, these devices automatically switch off the current in the controlled circuit as the pre-set temperature limit is reached, thus preventing overheating. Once the defection of the temperature regulation was repaired, in voltage-free state, and after re-cooling to room-temperature (25 +/-5°C), the limiter/protective guard can be re-started manually. Failsafe operation means that in case of mechanical damage or leaking of the filling-fluid, the safety cut-out will perform one last switch and break the electrical circuit. Working tepmerature range: 0 – 150 °C Areas of application: – household heating boilers – hot-water boilers and hot-water storage tnaks Trouble-free operation is conditioned by proper heat transfer between the controlled medium and the controller’s and limiter’s sensors.