HIKVISION - DS-K4H250S - Single-Door Magnetic Lock, 272 kg Holding Force, 12/24 VDC, Status Output

Hikvision DS-K4H250S — single-door 272 kg magnetic lock with status output

The DS-K4H250S is the maglock we fit with Hikvision controllers and terminals. A 272 kg (about 600 lb) holding force covers a standard office, corridor or perimeter door. Being fail-safe, it releases on power loss — the right behaviour on an escape route with a break-glass beside it — and its dry-contact output tells the DS-K2702X or a terminal such as the DS-K1T342MWX-E1 whether the armature is actually held, not just whether power is applied. The DS-K4H250-LZ L/Z bracket set fits it to inward-opening doors; the DS-K4H250D is the double-door version.

Holding force and doors

Maximum 272 kg (599.8 lb) of linear thrust. The datasheet lists single-leaf and double-leaf doors in wood, glass, metal and fireproof construction. The lock body measures 240 × 49 × 25.5 mm and the armature plate 180 × 38 × 11 mm.

Electrical and monitoring

Dual voltage: 12 VDC at 500 mA or 24 VDC at 250 mA. A dry-contact signal output rated to 3 A gives NO while locked and NC while unlocked, and the LED shows green for locked and red for unlocked — wire the contact to the controller's door-status input for true door monitoring.

Construction

Hard-anodised, electroplated shell with an eco-friendly electroplated zinc lock body and armature plate. Operating range -10 °C to 55 °C, 0 to 95% relative humidity.

DS-K4H250S technical specification

What you'll need with it

• A 12 or 24 VDC lock supply sized for 500 mA at 12 V
• A controller or terminal relay to switch it — DS-K2702X or a MinMoe terminal
• An exit button such as the DS-K7P03A and, on escape routes, a break-glass release
• The DS-K4H250-LZ L/Z bracket for inward-opening doors

Frequently asked questions

What holding force is the DS-K4H250S?

272 kg (599.8 lb) linear thrust.

Is it fail-safe or fail-secure?

Fail-safe — an electromagnetic lock holds only while powered and releases on power loss.

Does it report door status?

Yes — a dry-contact output (3 A) is NO when locked and NC when unlocked, with a green/red LED.

12 V or 24 V?

Either: 12 VDC 500 mA or 24 VDC 250 mA.

Do I need a bracket?

For surface fitting to an inward-opening door use the DS-K4H250-LZ L and Z bracket set; outward-opening doors take the lock directly on the frame.

Trade pricing

Zenith Security Co is an authorised Hikvision partner supplying genuine UK-specification stock. Prices shown are for trade account holders — contact us for account terms and stock, call 01902 902251, or collect from our Wolverhampton trade counter. Browse all intercoms, the wider access control range, or the full Hikvision range.

Hikvision Authorised Distributor: Zenith Security Co is verified by Hikvision UK as an Authorised Distributor/Wholesaler (check us with the "Verify a Wholesaler" tool on Hikvision UK's wholesaler page), so this is genuine UK-supplied Hikvision equipment. See our full Hikvision range.