12A 15A 16A 12V 16V 24V Temperature Switch Bimetal Thermal Protector HR-297

Short Description:

Introduction：Defrosting Thermostat Fuse HR-297

The slimmest rectangular type snap-action thermostat has unique technology having dual contact devices patented automatically reset at preset temperature. An electrically isolated bimetal disc is used to either open or close the circuit current.

Function: temperature control

MOQ：1000pcs

Supply Capacity: 300,000pcs/month

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Product Parameter

Product Name	12A 15A 16A 12V 16V 24V Temperature Switch Bimetal Thermal Protector HR-297
Use	Temperature control/Overheat protection
Reset type	Automatic
Base material	resist heat resin base
Electrical Ratings	15A / 125VAC, 7.5A / 250VAC
Operating Temperature	-20°C~150°C
Tolerance	+/-5 C for open action(Optional +/-3 C or less)
Protection class	IP00
Contact material	Silver
Dielectric Strength	AC 1500V for 1 minute or AC 1800V for 1 second
Insulation Resistance	More than 100MW at DC 500V by Mega Ohm tester
Resistance Between Terminals	Less than 100mW
Diameter of bimetal disc	12.8mm(1/2″)
Approvals	UL/ TUV/ VDE/ CQC
Terminal type	Customized
Cover/Bracket	Customized

Applications

Used for temperature control in refrigerator and air-conditioner, also applicable for automatic temperature control in dehumidifier, refrigerator heating-defrosting and system temperature limit safety arrangement. Its structure features application of resin to seal the electric parts completely, allowing to be installed in a narrow space, boasting easy installation, moisture-proofness and wet proofness,etc.

The reasons why the defrost thermostat in your fridge may not be working correctly

Incorrect defrost timer

A malfunctioning defrost timer can lead to the development of ice on the evaporator coils, which will cause poor airflow through them and overheating in the refrigerator section. Incorrect defrost timers will have a timer plunger that only moves partway or doesn’t move at all during the defrost cycle. This will cause ice build-up because there will be no opening of the freezer door during defrost to let the warm air into the refrigerator’s freezer section.

Broken or defective thermostat

If you’ve used your defrost timer before and had it replaced, this may be the problem since most technicians will only replace the defrost timer with an identical part number. The correct replacement for a broken or defective defrost thermostat is either a service kit or the entire defrost control assembly.

Defrost heater problems

The most common problem with the defrost heater is that it’s burned out and needs to be replaced. This can happen if things like aluminum foil or plastic bags are left where they shouldn’t be, which could melt onto the heating element and damage it.

Other causes for defrost problems

Other common problems are when the evaporator fan isn’t working, which will cause low airflow over the coils, and when there is damage to the freezer section of the refrigerator. This includes rust or dents on the evaporator’s cooling fins or coil tubes (usually caused by a child trying to climb inside the fridge).

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Our product has passed the CQC,UL,TUV certification and so on, has applied for patents accumulatively more than 32 projects and has obtained scientific research departments above the provincial and ministerial level more than 10 projects. Our company has also passed the ISO9001 and ISO14001 system certificated, and national intellectual property system certificated.

Our research and development and production capacity of the company’s mechanical and electronic temperature controllers have ranked in the forefront of the same industry in the country.