Thermistors are a type of resistor that acts as a temperature-sensing element, generally made of ceramic or polymer. Thermistors exhibit a large change in resistance proportional to a small change in temperature. Thermistors come in two common types: NTC (Negative Temperature Coefficient) thermistors – In these thermistors resistance decreases as temperature rises. An NTC is commonly used as a temperature sensor, or in series with a circuit as an inrush current limiter. PTC (Positive Temperature Coefficient) thermistors – In these thermistors resistance increases as temperature rises. PTC thermistors are commonly installed in series with a circuit, and used to protect against overcurrent conditions, as resettable fuses.
Description:
Designed to meet the latest standard for emergency
stop equipment, EN418 and is suitable for Zone 1 & 2 environmentsCan be installed along or around awkward machinery such as conveyors and provides a constant access emergency stop facilityStatus indicator makes ...
Description:
This precision switch is designed for use on
hinged guards, with the operating shaft fixed to the hinge bolt.On opening the guard, the shaft will rotate, breaking the N/C contacts with a positive mechanical linkage.The stainless steel shaft has a ...
Description:
The Eaton P1, 3 pole ON-OFF switch has
a current rating of 32 A. It has a steel enclosure with a front plate and black thumb grip control element. IP 65 degree rated protectionScrew type connectionSurface mount.
Description:
The Eaton T0, ON-OFF switch has a current
rating of 20 A. It has 2 contact units. It has a steel enclosure with a front plate and black thumb grip control element. IP 65 degree rated protectionScrew type connectionSurface mount. ...