BW9700 thermal protector
small size bimetal thermostal switch
fixed holder
vertical terminal
fixation of working tempertu
BW-B serial universal and enhanced protectors with large plastic casing are widely used in motor of industry, electrical household appliance, and electric equipment including humidifier, electrical dryer and ballast 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 | ||||
BW-B serial universal and enhanced protectors with large plastic casing are composed of the thermal conductive plastic 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. | ||||
Installation and overall dimensions | ||||
| ||||
ProModel | length | Width | Height | Cable |
BW-B universal | 15.0±0.4 | 6.5±0.2 | 3.1±0.1 | The cables are AWG20#, 22# silicone cable and electronic irradiated cable. Customized service is available. |
BW-B Enhanced | 15.5±0.4 | 7.1±0.2 | 3.7±0.1 |
Rated action temperature table
specification
Action temperature
specification
Action 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 capacity
Voltage
24V-DV
125V-AC
250V-AC
current
12A
12A
8A