Working principle of ABR19-S7 three-phase thermal protector:
The operation of the disc shaped thermal bimetallic jump action usually closes the contact system and is sensitive to both temperature and current. When used appropriately, the protector will shut down the motor or equipment when the temperature exceeds the maximum safety standard due to overload or stalling (locking the rotating shaft). The motor needs to cut off the force, and the shorter the time, the better the current operation.
Purpose:
ABR19-S7 three-phase thermal protector motor protector is suitable for overheat and overload protection of motors, electric fans, submersible electric pumps, various types of electric pumps, agricultural equipment, air compressors, and instruments.

Main technical parameters of ABR19-S7 three-phase thermal protector:
Rated electrical performance: AC380V ------1A~30A
Circuit control type: normally closed/normally open (automatic reset)
Rated operating temperature: 60 º C to 140 º C (can be set according to user's actual needs)
Disconnecting temperature tolerance: ± 4 º C, ± 5 º C
Temperature difference between on and off: 15 º C-60 º C
Reset temperature tolerance: ± 8 º C, ± 10 º C
Action cycle: ≥ 10000 times
Standard electrical strength: withstand voltage within 2000V per minute without flashover
Standard insulation resistance:>100M Ω
Jump off standard temperature: 25 º C 105% current:>2 hours, no delay 200% current: delay within 2 minutes 600% current: 5-15 seconds delay

ABR19-S7 three-phase thermal protector