OB750 Series – 750kg(1600lbs) Magnetic Lock
The OUBAO OB750 Series magnetic lock is our high-security electromagnetic locking solution, delivering 750kg (1600lbs) of holding force — engineered for demanding applications where maximum retention strength and uncompromising reliability are critical.
Built with a rugged high-strength aluminum alloy housing and a precision-machined heavy-duty armature plate, this lock generates powerful magnetic adhesion when energized, ensuring formidable door securing across high-traffic, high-risk entry points without any mechanical wear. Its fail-safe design automatically releases the door upon power failure, fully complying with international fire safety and emergency egress codes. With no residual magnetism and silent operation, the OB750 is optimized for continuous-duty environments where both security and user experience matter.
Internationally Certified for Diverse Markets — The OB750 meets rigorous global standards, Carries the CE mark confirming European safety and performance conformity; A field-proven, regulation-ready solution for commercial deployments spanning multiple jurisdictions worldwide.
Product Parameters
| Item No. | OB750HA |
|---|---|
| Working voltage | 12VDC or 24VDC |
| Working current | 12V/450mA or 24V/230mA |
| Operating temperature | -25℃~60℃ |
| Working humidity | 10%~90%RH |
| Feature | Power off to unlock (Fail safe) |
| Installation method | Hanging installation |
| Holding Force | 750KG±10% |
| Door opening angle | 90° |
| Panel material | High strength aluminum alloy |
| Finish | Oxidation & brushed finishing |
| Signal output | YES |
| Indicator light | YES |
| Time delay adjustment | It can be customized according to requirements. |
| Standard sizes | 267×73×42 mm |
Application Scenarios
Public Facilities: Hospitals, schools, airports, libraries and government buildings
Fire Safety: Fire doors, stairwells and emergency exit passages
Residential & Apartments: Entrance doors, common areas and multi-family housing
Industrial & Special Use: Factories, server rooms, climate-controlled spaces and high-traffic areas





