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KSD303-A Plastic Sealed Defrost Thermostat(1/2")

KSD303-A series snap-action defrost thermostat is a kind of miniature waterproof and hermetically seal thermostat sensor. 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 five sub series as: KSD303-A, KSD303-D.



 

Use

Defrost

Appliance

Refrigerators(water thermostat, refrigerator thermostat)

Resettype

Automatic

Basematerial
resin heat resin base
Amperage
3A/6A/10A
Max. Operating Temperature
20℃
Differential
Refer to the regulation
Min. Diff
8℃
Tolerance
Refer to the regulation

Cold-resistant Temperature

-40℃

Limit of the tolerance(OFF)

±2℃

Limit of the tolerance(ON)

±4℃
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 10MΩ.
Resistance
Between
Terminals
Below 50mΩ
Temp.characteristics
Normal close, Normal open
Maximum ambient
temperature
60℃
Diameter of 
bimetal disc
Φ12.8mm(1/2″)
Approvals
UL/CQC/TUV
Line
Color: red/brown/blue Length: customized
Terminal type
Customized (Refer to our specification
Cover/Bracket
Customized (Refer to our specification

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