SP1, KP1, CP1 - Thermal-Protectors without insulation cap
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Information 380 e Non-self-resetting ThermalProtector Series 01-Type P1-Version SP1, KP1, CP1 Application: Non-self-resetting Thermal-Protector (TP) with normally closed contacts are utilised for overheating protection of all kinds of electric equipment or devices, for example motors and transformers. They are applied, where protection against overheating is required and where an automatic reset of the device after overheating and subsequent cooling is not permitted or desired. The Thermal-Protector Type P1 are based on the well proven mechanism of Thermik’s product Series 01. The PTC heating resistor RH, parallel to the contact, effects an electrically operated self locking mechanism. Versions : SP1 - with insulation cap KP1 - with shorter insulation cap than SP1 CP1 - without insulation cap dimensions (average) Operation: If, in case of overheating, the rated switching temperature of the bimetallic disc is reached, this suddenly snaps over and opens the contact. When the contact is open, the heating resistor RH is activated and prevents the temperature to fall below the reset temperature of the bimetallic disc. Only after switching off the operating voltage and after a relative short cooling phase the bimetallic disc resets to close the contact. Features: Very compact and flat design Quick response sensitivity : featured by the metal housing and small protector mass Excellent long term performance : due to fine silver contacts. Reproducible switching temperature values due to tempered, electrically and mechanically unstressed bimetallic disc and by use of temperature resistant materials Instantaneous switching : with constant contact pressure over the whole temperature range Very short bounce times : < 1 ms Self regulating PTC- heating : enables rated switching temperatures up to 180 ° due to a C, resistor very small overshooting of the temperature effected by RH

Standard connection leads *) The "European Accreditation CB Scheme" Certificate, named CB- Certificate, covers virtually all national approbations. The data of this table refers to the standard version. For others - please inquire. Marking example of the insulation cap: Nominal switching temperature [ °C ] Ordering example: SP1 - 125 . 05 . 0100 / 0100 Type and version Switching temperature [ ° ] C Tolerance [ K ] Lead-lengths [ mm ] The indicated values in this data sheet can differ for special designs. We reserve the right to modify technical specifications without notice. Rev- 04-2008