Safety temperature limiter: technically on the safe side

The Safety-TL4896 meets the specifications of EN 14597, EN 61508 and SIL2 as a safety temperature and as a safety temperature monitor. It enables direct mounting on the switch panel or the switch cabinet door. There is no need for an additional display on the top-hat rail. Configuration of the Safety-TL4896 (STL) takes place directly via the buttons on the front display. Additional software is not necessary. With the integrated analogue output for the temperature signal, an additional measuring chain for the signal for the PLC or SCADA world can also be omitted. The pre-alarm provides an early warning of critical situations and thus prevents unnecessary downtimes.

  • Two in one
    The Safety-TL4896 safety temperature limiter is an indicator and operating unit in one, eliminating the need for additional devices, such as reset buttons or digital indicators, in the switch panel.
  • Adjustable pre-alarm
    Unnecessary downtimes can be avoided with an adjustable pre-alarm, even before the limit value is reached.
  • Configuration without additional software
    Programming takes place via the device buttons and the front display. Use of a PC and additional software is omitted.
  • Distinguished 
    with the title BEST OF 2018 the list of the best electrical products in the scope Initiative Mittelstand the German initiative for medium-sized companies.
Your technical adviser from GHM GROUP
"With the possibility of integrating the STL in the front panel or switch cabinet door, an indicator and reset unit become unnecessary. This saves time and money."

Your technical adviser from GHM GROUP

Well-advised with the GHM GROUP.


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The Safety-TL4896 safety temperature limiter in action

In many systems, safety is not only technically necessary, it is a requirement. In boiler applications for hot water production, for example, the temperatures must be monitored in addition to the limit pressure and water supply. Ultimately, DIN EN12828 prescribes that the power supply is monitored without interruption as soon as only one of the limit values is exceeded – regardless of whether the system is operated with oil, gas or electrical power.

The Safety-TL4896 fulfils these requirements in two respects. It offers an adjustable contact for a pre-alarm for timely warning before limit values are exceeded. It also activates a shut-off contact when limit values are exceeded. With the adjustable pre-alarm, no additional limiter is needed and a redundancy to the automation unit is provided.

Efficiency is a matter of technology

If you have concrete questions about integration and installation of the Safety-TL4896 safety temperature limiter, you will find the right answers here. This applies to the technical data, the wiring and the configuration.

Technology with format

Technology with format

As a compact front panel device in the dimensions 48 x 96 mm, the Safety-TL4896 matches the design of modern small systems perfectly.

Flexibility in the choice of sensors

Flexibility in the choice of sensors

The Safety-TL4896 can be connected to a double thermocouple or a Pt100 temperature sensor from our product range.



The first and only switch panel safety temperature limiter for direct installation in the control panel or the control cabinet.

GHM GROUP – where quality and variety are the key variables

GHM Messtechnik GmbH is a leading specialist and full-range supplier for innovative measurement and control technology. With a global focus and passionate employees, the company develops and produces a wide range of more than 2,000 high-quality device types for all essential areas of industrial sensors and electronics.

The customer is the company's primary focus

The GHM GROUP continues in its consistent efforts to permanently advance measuring and regulation technology with innovative developments and application-specific solutions with high customer value.

Efforts are centred on the development of customer-oriented solutions that are appropriate for the market and tailored to the high demands of industry and producing industry.


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