Frequently asked questions
Short answers to the questions we are asked most often.
What is the difference between a thermostat and a thermal cut-off?
A thermostat keeps the set water temperature. A thermal cut-off takes no part in normal operation — it cuts out only in a fault. In our KTTO both functions are combined: control from 20 to 72 °C and protective cut-out at 80 °C.
What does a two-pole thermal cut-off mean?
That live and neutral are broken simultaneously, leaving the appliance fully isolated from the mains. TOBS-D and TOS-D are two-pole.
The thermal cut-off has tripped — will it reset itself?
It depends on the type. TOBS-D is non-resetting. TOS-D restores itself once it cools below 40 °C. Frequent tripping usually means a faulty thermostat.
Can the trip temperature differ from the standard?
Yes. The trip temperature is made to customer specification. Our standard settings are 75 °C for TOBS-D and 60 °C for TOS-D.
What are the three KTTO variants?
They differ in the position of the current-carrying terminals: TYPE 1 for direct connection, TYPE 2 for indirect connection allowing contactor control, TYPE 3 with an output for an indicator lamp.
Do you make parts from a sample, without a drawing?
Yes — that is the usual way we work with resins and silicone. You bring the original part and we make a silicone mould and cast polyurethane copies.
At what quantity is an injection tool worth it instead of casting?
A silicone mould takes days and costs a fraction of an injection tool, so casting wins for prototypes and small series.
Describe the job — we will answer with a quote
A production component, a part to cast or to print — send us the requirements, the quantity and the deadline.