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KSD303 thermostat Thermal Fuse 10A 250V Mini Thermostatic Bimetal Temperture Switch Foshan Tongbao Controls
KSD303-D series snap-action defrost thermostat is a kind of miniature waterproof and hermetically seal KSD bimetal thermostat. It is of single-pole single-throw structure and works under resistive load. Thermostat is enveloped in cold-resistant and flame-retardant plastic tube or sealing gum for possible underwater applications. The product series is widely used as heating compensated switch or automatic defrosting control switch in air-cooling frostless refrigerators.
According to different structures, KSD303 series is divided into two sub series as: KSD303-A, KSD303-D.


Advantages:
Parameter:
Use | Defrost/Temperature control/Protection |
Appliance | refrigerators (freezer thermostat, refrigerator thermostat) |
Reset type | Automatic |
Base material | resist heat resin base |
Amperage | 3A/6A/10A |
Max. Operating Temperature | 70°C |
Differential | Refer to the regulation |
Min. Diff | 8°C |
Tolerance | Refer to the regulation |
Cold-resistant Temperature | -40°C |
Limit of the tolerance(OFF) | ±2°C |
Limit of the tolerance(ON) | ±4°C |
Contact material | Silver |
Dielectric Strength | Parts between electriferous components and non-electriferous ones can bear 2000V (3750V for Reinforced insulation type) 50Hz AC current, which is nearly sine wave, for one minute as bearing test. Resulted no breakdown, no flashover. |
Insulation Resistance | With a DC 500V megger, borne DC 500V, the tested value is over 10MW. |
Resistance Between Terminals | Below 50mW |
Temp. characteristics: | Normal close, Normal open |
Maximum ambient temperature | 90°C |
Diameter of bimetal disc | F12.8mm(1/2″) |
Approvals | CQC/TUV |
Line | Color: white/brown/yellow/blue Length: customized |
Terminal type | Customized (Refer to our specification) |
Cover/Bracket | Customized (Refer to our specification) |
Dimension of the main body:

Safety certificate:
Rates | Cycles | Max. OT | Certificate |
250V 10A | 10,000 | 50 | CQC,TUV |
Installation and Direction for Use:


Getting more information, please refer to our website: www.thermostat-gb.com



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