2-POLE TEMPERATURE LIMITER, PROTECTIVE GUARD
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2-POLE FAILSAFE TEMPERATURE LIMITER, SAFETY SENSOR

1-POLE FAILSAFE TEMPERATURE LIMITER, SAFETY SENSOR

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, and the device has cooled down to room-temperature, in voltage-free state, the limiter / protective guard can be re-started manually.

Working temperature range: 0 – 350 °C

Areas of application:
– water heaters
– hot water storage tanks.

Trouble-free operation is conditioned by proper heat transfer between the protective limiter’s sensor and the controlled medium. In case of capillary-damage or liquid-leakage, the device will cut the circuit one last time as positive safety-feature.

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Description

TECHNICAL DATA

Lifetime: 1000 switching cycles Working range: 0-350 °C
Switching power: 30(4)A-4(1)A/250 V~ Conductive connection: A6,3X0,8 tab contact
A6,3X0,8 tab contact – M3 screw terminal
20(4)A-4(1)A/250 V~
16(4)A-4(1)A/400 ~V
Way of operation: 1AGKLM M3 screw terminal
Max.temp. for the main unit: 85 °C / 150 °C Capillary tube: Ø 1,6 (INOX)
Protection class: Class 0. / IP 00 Capillary tube length: 2400 mm
Operation environment: Normal of bulb: Coiled inox tube: INOX: Ø 6;
Heat and fire resistance: D Max. bulb temperature: Max. working temperature +15%
Leakage current resistance: ≥175 Manual reset temp.: 25 ± 5°C

TYPE EXAMPLES

Type Code Type mark Dial scale
°C		 Sensor
ØD x L1/mm/
Material		 Capillary tube
Ød x L2 /mm/		 Protection tube
L3 /mm/		 Anti-break
protection
Rt
5276-0-151-0 BTB-12-01 160 +0 -12 6,1 x 48 Inox 2 x 1650 1480 M
5276-0-151-1 BTB-12-01 320 +0 -14 6,1 x 48 Inox 2 x 1540 1150 M
5276-0-151-2 BTB-12-01 255 +0 -14 6,1 x 48 Inox 2 x 905  750 M
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