3-POLE TEMPERATURE LIMITER, PROTECTIVE GUARD
3-POLE TEMPERATURE LIMITER, PROTECTIVE GUARD
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EX-PROOF 3-POLE MANUAL RESET FAILSAFE TEMPERATURE LIMITER
EX-PROOF 3-POLE MANUAL RESET FAILSAFE TEMPERATURE LIMITER

3- AND 4-POLE FAILSAFE TEMPERATURE LIMITER MANUAL RESET

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:

– heat pumps
– 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.

SKU: N/A Category:
Description

TECHNICAL DATA

Lifetime: 1.000 switching cycles Electrical connections: A 6,3×0,8 tab contact – M3 screw
Switching power: 30(4)A-4(1)A/250 V~ Working range: 77 – 350 °C
20(4)A-4(1)A/250 V~
16(4)A-4(1)A/400 V~
Way of operation: 2 AGKLM Capillary tube: Ø 1,6 (Inox)
Max. temp. for the main unit: 85 °C / 150 °C Capillary tube length: 2400 mm
Protection class: Class 0. / IP 00 Sensor: Coiled: Ø1,6 Inox:; Ø6;
Work environment: Normal Manual reset temp.: 25± 5°C
Heat and fire resistance: D Max. sensor temperature: Upper switching value +15%
Leakage current resistance: ≥ 175 Surface protection: Galvanized

TYPE EXAMPLES

Type Code Type mark Switch-off
temp. °C		 Sensor
ØDx L1/mm/;
Material		 Capillary tube
Ød x L2 /mm/		 Protection tube
L3 ± 20 /mm/		 Wiring diagram
M/ A
5278-0-301-1 BSB-30-01 100 ± 5 6,1×48 Cu 1,8 x 630 590 M
5278-0-301-3 BSB-30-02 100 ± 5 6,1×48 Cu 1,8 x 630 590 M
5278-0-310-2 BSB-30-01 105 ± 5 6,1×48 Cu 1,8 x 1030 590 M
5278-0-401-0 BSB-40-01 91 ± 5 6,1×48 Cu 1,8 x 430 590 M
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