The Thermal Protector L05 from Thermik Corporation is a normally closed temperature controller that automatically resets. It features a compact design suitable for installation in various applications, including windings. The device utilizes a bimetallic disc mechanism that opens the contact when the rated switching temperature is reached and closes it again upon cooling to a defined reset temperature.
Key specifications include a nominal switching temperature range from 50 °C to 200 °C with a standard tolerance of ±5 K. The protector is designed for high reliability, with a total bounce time of less than 1 ms and a contact resistance of = 50 mO. It can handle operational voltages up to 500 V AC and 14 V DC, with a maximum switching current of 40 A for DC applications. The housing is fully insulated and constructed to withstand mechanical loads, ensuring long-term performance.
The L05 is suitable for protection classes I and II and has various approvals, including IEC, ENEC, VDE, UL, and CSA. Its small dimensions and quick response sensitivity make it an effective choice for applications requiring precise temperature control.
Switchgear consisting of a movable silver contact (1), a contact bearer (2), a spring snap-in disc (3) and a bimetallic disc (4) which is riveted into one another, undetachable and fixed in a positive lock and self-aligning between a conductive, heat-transferring housing (5) and a contact cap made of steel (6) that is insulated from it, plus a stationary countercontact (7). At the same time, the switchgear is carried by the spring snap-in disc (3) acting as a transfer element for electric current which is held between a supporting collar and a circumferential ring. As such, the bimetallic disc (4) underlying it, that is also stuck out from the movable contact (1), can continuously work (exposed) by mechanical loads without the contact pressure defined by the spring snap-in disc (3) diminishing. As soon as the bimetallic disc (4) reaches its rated switching temperature, it effectively springs against the throw force of the spring snap-in disc (3) into its inverted position. The contact is abruptly opened. The temperature will now fall, the bimetallic disc (4) will only snap back upon reaching a defined reset temperature and the contact is closed again.
| Thermik Corporation | |
|---|---|
| Product Category | Thermal Switches and Thermal Protectors |
| Product Number | L05 |
| Product Name | Thermal Protector (Temperature Controller) |
| Switch Type | Normally Closed, NC |
| Features | Automatic Reset |
| High Temperature Set Point | 122 to 392 F (50 to 200 C) |
| Maximum Current | 40 amps |
| Maximum AC Voltage | 500 volts |
