ZHI-2525 permanent magnet solenoid used for fire-proof door

External size：Dia. 25*L 25 （mm） 

Voltage：3-48VDC 24-220VAC 

Keep force：1-4.1kg,remanence：200g. 

Work mode：Electromagnet，work when de-energized.

Insulation class： Class B，F(xiàn)..... 

Application:Fire-proof door