BW Series Transfer Thermal Protector

Motor Thermal Protector 1.Max.current:5A Max.volage:250V 2.life cycle:abvoe 5000 times 3.plastic thermal shell

1)quick bimetal protector 2)plastic thermal shell 3)acurate temperature sensor 4)minisize thermermostat

KI67 thermal protector descriptionTH-AID universal and enhanced serial thermal protectors are widely used in industry, electrical household appliance and electric equipment to avoid abnormal operation caused by overcurrent and overtemperature. The products provide effective, reliable and safe protection. The enhanced casing is suitable for internal installation of plastic hermetic motor, which can bear the plastic molding pressure at 3.5Mpa. The performance of the products satisfies the standards including IEC34-11, GB13232, GB/T13002, etc.

Structure and protection principle of KI67 thermal protectorTH-AID type thermo protector is composed of the parts of thermal conductive casing, bimetallic parts welded with silver alloy contact point, conductive bracket, insulation fixation stand, fixed contact strip and heat resistance cable. When current passes through the bimetallic parts with resistance and in case of abnormal operation, along with the increase of current or the environment temperature rises to the set value, the bimetallic parts perform quick action, opens the contact point, and disconnects the circuit. When the device is cooled to the temperature for safe operation, the contact point will automatically closes and recover normal operation.

KI67 thermal protector Structure figure

Note1.Because the casing is made of conductive metal, thermal conductive and heat resistance insulation sleeves are required for use.2.Refer to A-C graph for selecting protection temperature.

Rated action temperature table

Type	Open Temperature Range	Type	Open Temperature Range
50°C	50±5.0°C	100°C	100±5.0°C
55°C	55±5.0°C	105°C	105±5.0°C
60°C	60±5.0°C	110°C	110±5.0°C
65°C	65±5.0°C	115°C	115±5.0°C
70°C	70±5.0°C	120°C	120±5.0°C
75°C	75±5.0°C	125°C	125±5.0°C
80°C	80±5.0°C	130°C	130±5.0°C
85°C	85±5.0°C	135°C	135±5.0°C
90°C	90±5.0°C	140°C	140±5.0°C
95°C	95±5.0°C	145°C	145±5.0°C
		150°C	150±5.0°C

Note: The recovery temperature is 2/3 of the standard action temperature with the tolerance of ±15°C or specified by customer

 

Contact point maximum capacityTH serial protectors can perform 5000 times of connection and disconnection protection under the following conditions.

Voltage	24V-DC	125V-AC	250V-AC
Current	12A	12A	8A

Installation and overall dimensions

CableThe cables are AWG20#, 22# silicone cable and electronic irradiated cable. Customized service is available.A-C graphCritical current & ambient temperature graph (It is to consider current effect while selecting the protection temperature)

Passed certifications

BW Series Transfer Thermal Protector