Safety temperature cut outs STB With capillary tube

AFRISO Sicherheits-Temperaturbegrenzer STB LS1/971 F1 100C 1000mm VOR 76840 76850 76860 76870 76880 object_image_98528imagemain_en

AFRISO Sicherheits-Temperaturbegrenzer STB LS1/971 F1 100C 1000mm SAL 76840 76850 76860 76870 76880

AFRISO Sicherheits-Temperaturbegrenzer STB LS1/971 F1 100C 1000mm SAR 76840 76850 76860 76870 76880

AFRISO Sicherheits-Temperaturbegrenzer STB LS1/971 F1 100C 1000mm BEF 76840 76850 76860 76870 76880

Data sheet Safety temperature cut outs STB With capillary tube

Benefits

Ideal for heating and process industries
For protection against exceeding the maximum temperature
No external power supply
Manual reset

Application

There are many application areas for safety temperature cut outs in the heating and process industries. In conventional oil-fired or gas-fired boilers, these devices are used to monitor the boiler water. The safety temperature cut outs feature a manual reset button which must be actuated for unlocking.

Versions

	Contact	Switching point	Capillary length	Part no.
Safety temperature cut outs STB LS1/971 F1	–	100 °C	1,000 mm	67273X
Safety temperature cut outs STB LS1/971 FU	Changeover contact	100 °C	1,000 mm	67276X
Safety temperature cut outs STB LS1/971 FU	Changeover contact	100 °C	1,500 mm	67277X
Safety temperature cut outs STB LS1/971 F1	–	110 °C	1,500 mm	67288X
Safety temperature cut outs STB LS1/971 FU	Changeover contact	75 °C	1,500 mm	67585X

Blue part no. = in-stock items

Downloads

	Description	Format	Language	Download / Link
Data sheet Safety temperature cut outs STB With capillary tube	Data sheet	PDF

Description

If the temperature at the probe increases, the measuring liquid in the measuring system expands. If the temperature exceeds a critical value, the device triggers, the voltage-free contact switches and the system is set to a defined safe state. When the temperature has decreased by approx. 15 K, the device can be unlocked and the system resumes operation.

Technical data

Type

LS1

Switching point

See ordering table

Tolerance

+0 K/-6 K at 20 °C

Influence of ambient temperature

0.25 °C/°C

Switching differential

∆T 15 ± 8 K

Fail safe

Yes

Probe

Copper
∅ 6.5 x 95 mm

Probe element

Liquid-filled

Operating temperature range

Probe:

Max. 125 °C

Housing:

Max. 85 °C

Capillary tube

Cu capillary tube with PVC coating, black

Length:

1,000, 1,500 mm

Degree of protection

IP 00 (EN 60529)

Time constant

DIN-tested DIN EN 14597:2012-09

Registration number:

TR/STB 1211

Electrical switching contact

Changeover contact

Contact rating

NC:

AC 250 V, 16 (2.5) A

NO:

AC 250 V, 0.5 A

Options

Other operating ranges
Other capillary tube lengths
Customised versions

Technical drawings

STB - housing dimensions

STB - housing and probe dimensions

Switching scheme