蠕变恒温器热保护器

速动恒温器/热保护器，在我们的所有控制器中具有最高的触点额定值. 适合使用于 120/240 交流负载. 可提供多种双金属元件以增强性能特征. 选择蠕变热保护器需要分析杆掷规格, 设定点温度, 滞后现象, 最大额定电流, 最大交流电压额定值, 最大直流电压额定值, 和开关寿命.

蠕变恒温器热保护器

低压蠕变双金属温控器

Creep Action Thermal Protector, Motor Protector

Pole-and-throw specifications
Single pole, 单掷 (单刀单掷) switches make or break the connection of a single conductor in a single branch circuit. They have two terminals and are commonly referred to as “single pole” switches.
Single pole, double throw (SPDT) switches make or break the connection of a single conductor with either of two other single conductors. Often called “three-way switches,” SPDT devices have three terminals and are used in pairs.
Double pole, 单掷 (DPST) switches make or break the connection of two circuit conductors in a single branch circuit and usually have four terminals.
Double pole, double throw (DPDT) switches make or break the connection of two conductors in two separate circuits. Most DPDT switches have six terminals and are available in either momentary or maintained contact versions.

Creep-Action Thermal Protectors with more than two poles are designed to split loads into separate circuits.

Creep-Action Thermal Protectors Set-point Temperature
Creep-Action Thermal Protectors Specification Guide Thermal switches and thermal protectors have a set point temperature that is either fixed or field adjustable. The set point is the rated temperature at which the device undergoes a change in state associated with movement of the electrical contacts. Fixed-point devices are rated at a given temperature while field-adjustable devices have a temperature range over which the set point can be adjusted.

Creep-Action Thermal Protectors Hysteresis
Hysteresis, also referred to as the temperature differential, is a finite temperature range over which switching takes place. It is designed to prevent circuitry from constantly changing between states. A hysteresis of 0.5 C will typically actuate 0.5 degrees past the set-point temperature and not change state again until the temperature drops to 0.5C below the set-point temperature.

环境温度: The normal or typical temperature of the environment surrounding the device.

Automatic Reset: A thermostat that automatically resets to its pre-trip contact configuration at a factory preset temperature.

双金属: Two metals with different rates of expansion molecularly bonded together to form a blade or disc for a thermostat.

Creep Action Thermostat: A thermostat with a bimetal blade that slowly makes the contacts or slowly breaks the contacts.

Current Derating: Term used to describe a predictable condition where increased current applied to a thermostat causes the device to open at a temperature below its set point. This condition is present only in Normally Closed bimetal thermostats that are both current and temperature sensitive.

Functioning Temperature: (TF of Tf) In reference to a thermal cutoff, as defined by IEC Standards, the temperature at which a Thermal Cutoff opens a circuit under a no load condition. The IEC tolerance is +0 C, -10 C.

Holding Temperature: (TH or Th) In reference to a thermal cutoff, the maximum temperature that a Thermal Cutoff can maintain Rated Current for a period of 168 hours with functioning.

Maximum Temperature: (TM or Tm) In reference to a thermal cutoff, the maximum temperature to which the device can be subjected for a period of ten minutes without resuming conductivity once it has opened.

Minimum Differential: (also known as deadband) The minimum number of degrees between the actual open and actual close temperatures.

Motor Protector: A thermal protector that is sensitive to both increases in current and increases in temperature.

常闭 (N.C.): Contacts open on temperature rise.

常开 (N.O.): Contacts close on temperature rise.

One Shot: A device that, once activated at its preset temperature, cannot be reset. Available only in Normally Closed contact configuration.
额定电流: The maximum allowable current that a device can carry.

额定电压: The maximum voltage that should be applied to a device.

Self-Hold Protector: A device that, upon opening, will not reset until power is removed from its circuit regardless of ambient temperature. Available only in Normally Closed contact configuration.

Snap Action Thermostat: A thermostat with a Bimetal element that snaps to close the contacts when the activation condition is experienced. This construction permits the clean break of loads.

热熔断器: A thermal cutoff is an electrical safety device that interrupts electric current when heated to a specific temperature.

Thermal Cutoff Fuse: A device that melts its internal element to open a circuit in an over-temperature condition. Also known as a thermal fuse, thermal protector fuse or thermal switch.

Thermal Protector: A Thermal Protector is a protective device built into a motor that provides over-current or over-temperature protection that disconnects power to the ballast if internal temperatures rise above the trip point. This protects motors from overheating. Types of switches include automatic rest, manual reset and resistance temperature detectors.

宽容: The allowable range above and below a nominal temperature.