Thermal Overload Protector Model ISQB is best suited for over temperature and burnout protection of electronics equipment.
We are the leading manufacturer and supplier of thermal overload protectors and thermostats in India. Due to the high demand from the electrical and electronics industry in India, we have developed a thermostat model ISQB for over temperature and burnout protection of electronics equipment especially for this industry. Using this thermostat can eliminate the use of thermistor protection circuits for over temperature and burnout.
Model ISQB thermal overload protector which can be screwed on to any aluminum heat sink channel or on to body of any electronics equipment. It has a small size and has a solid machined aluminum outer body. Unlike other thermostats, the aluminum body of model ISQB is electrically insulated, so there is no chance of electrical shock. The operating mechanism is based on a snap action bimetal strip and a copper alloy switching blade which works on the over center tripping mechanism. This mechanism ensures that the thermostat has quick restart characteristics as well as stable trip temperature, even after long usage. The other snap action disc thermostats have delayed restart and the trip temperature drifts downwards after long usage.
When the temperature rises, the bimetal strip senses the heat and trips off, thereby, saving the electronics equipment from burning out. This thermostat is available with Normally Open (NO) or Normally Closed (NC) contacts. It has solid silver contacts for long life and teflon lead wires, which can withstand high temperature. The body is double sealed, so the operating characteristics are not affected by dust, moisture, varnish, etc.
Model ISQB is suitable for over temperature and burnout protection of all electronics equipment such as invertors, UPS, amplifiers, SMPS power supply, AC & DC power supplies, etc, and eliminates the use of costly thermistor protection circuits. This thermal overload protector can be screwed on to the heat sink or the body of the equipment with two M3 screws. Since it is available in both Normally Open (NO) or Normally Closed (NC) configuration, it can be connected in series with the main line or it can be connected to a relay or control circuit. When heat builds up, it senses the temperature rise and switches off at a set pre-determined temperature, for example, 75 degrees C. The Normally Open (NO) configuration can be used to switch on a fan when the temperature rises or it can be used to activate a control circuit, which can provide an indication that the equipment is overheating. The pre-determined temperature is set factory preset and cannot be changed by the user. Please consult us for complete technical guidance.
|Voltage||Up to 250VAC or 24VDC|
|Continuous Load||Up to 8 AMPS|
|Maximum Load Switching Capacity||30 AMPS|
|Contacts Configuration||Available with Normally Open (N.O.) or Normally Closed (N.C.) contacts|
|Switching Action||SPST Normally Closed (N.C.) or Normally Open (N.O.) contacts which open or close with a snap action at a preset temperature and disconnect the electronic equipment from the mains.|
|Flash-over Voltage||Exceeds 2 KV between body & leads.|
|Endurance (Life)||Exceeds 100,000 operations (trippings).|
|Trip Temperature||Available preset for any trip temperature between 50 ± 5 C to 160 ± 5 C specified by customer. Trip temperature not adjustable.|
|Reset Temperature||Reset temperature (restart temp) approx. 15 ± 5 C below trip temperature.|
|Restart Mode||The thermostat/thermal overload protector will automatically restart upon cooling. This will automatically switch on the electronic equipment. Adequate precaution must be exercised in power electronics protection applications where automatic thermostat/thermal overload protector restart can cause injury.|
|Fitting or Mounting||The thermostat/thermal overload protector can be screwed on to any heat sink or on to the body of the equipment.|
|Connections||Thermostat/Thermal Overload Protector can be connected in series with the main circuit or it can be connected to a control circuit, relay, contactor, etc., which can provide an indication of overheating. The Normally Open (N.O.) contact model can be connected to a fan which will operate when the equipment overheats and the contacts close.|