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STB

Sicherheits-Temperaturbegrenzer mit Kapillarleitung

Variants

ideal for heating and process industries
for protection against exceeding the maximum temperature
no external power supply
manual reset

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.

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.

	Contact	Switching point	capillary length	Part no.
Safety temperature cut outs STB LS1/971 F1	Single	100 °C	1000 mm	67273X
Safety temperature cut outs STB LS1/971 FU	Changeover contact	100 °C	1000 mm	67276X
Safety temperature cut outs STB LS1/971 FU	Changeover contact	100 °C	1500 mm	67277X
Safety temperature cut outs STB LS1/971 F1	Single	110 °C	1500 mm	67288X
Safety temperature cut outs STB LS1/971 FU	Changeover contact	75 °C	1500 mm	67585X

in-stock items
manufactured goods

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: 1 - 1

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:: 1000 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: Single

Contact rating

NC:: AC 250 V, 16 (2.5) A

NO:: AC 250 V, 0.5 A

STB

Sicherheits-Temperaturbegrenzer mit Kapillarleitung

Benefits

Application

Description

Variants

Technical data

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