Would this work to lift large metal plates with a hoist?

It would not be safe and that is not the intended use; if and when the magnet loses power even for a milisecond, it disconnects by design.

There's no wire with this and I don't think I could add any if I tried. The screws on the connects don't turn. How to install?

Hi, please unscrew the screw on the front panel, then you can see 2 connects V+ and V-, connect them to your 12V DC power supply control with wire and it will be OK. thanks.

I’m building a magnetic hold to process metal parts after plasma cutting. With 3 of these how many amp power supply do I need?

I'm using a 12 volt, 500ma power supply to power two locks.

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🔐 Lock in security, unlock peace of mind.

FAIL SAFE POWER MODE - NC mode ensures the door stays locked when powered, unlocking instantly on power loss for safety-first access control.
PLUG PROTECT SETUP - Includes screws and user manual for quick installation—no extra batteries or complicated wiring needed.
UNMATCHED SECURITY GRIP - Locks down with a massive 500KG (1200LBS) holding force—your door’s ultimate bodyguard.
PREMIUM INDUSTRIAL BUILD - Crafted from anodized aluminum and zinc for corrosion resistance and sleek modern aesthetics that last.
VERSATILE DOOR COMPATIBILITY - Seamlessly secures wooden, glass, metal, fire-proof doors, and cabinets—one lock to rule them all.

The YUHANUS Electric Magnetic Lock delivers a robust 500KG (1200LBS) holding force with a fail-safe NC mode powered by 12V DC. Built from durable anodized aluminum and zinc, it offers corrosion resistance and a polished finish. Designed for versatile use on wooden, glass, metal, and fire-proof doors, this lock ensures professional-grade security with easy installation and built-in voltage spike protection.

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Manufacturer	YUHANUS
Part number	769894490327
Item Weight	4.27 Kilograms
Product Dimensions	25.4 x 7.62 x 3.81 cm; 4.27 kg
Item model number	769894490327
Color	500KG/1200Lbs
Style	Modern
Finish	Polished
Material	Aluminum, Zinc
Shape	Rectangular
Voltage	12 Volts (DC)
Number Of Pieces	1
Special Features	Keyless
Included components	Screws, User Manual
Batteries Included?	No
Batteries Required?	No

YUHANUS Electric Magnetic Lock 500KG 1200LBS Holding Force Electromagnet Lock 12V Fail Safe NC Mode Single Door for Access Control System

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