12V DC-powered three-door normally free interlock

  • Automatically lock remaining two-doors when one is open
  • No request to exit switches required
  • Power with 12V DC
  • Compact steel enclosure with tamper switch
  • Made in Britain with 5 year warranty

DA726-12VDC-3: 12V DC-powered three-door normally free interlock

These are normally free door interlock controllers. When all doors are closed, their contacts are closed and are wired to release the other door(s). As soon as any door opens, its contacts lock the other doors immediately, and they stay locked until the first door's contact closes again. This then allows another door to open.

Note:

Indicators:It is recommended that door lock indicators are fitted to show the door status, such as the DA340

Violate: As the doors are normally unlocked, it is possible to open both doors together if perfectly synchronised. Careful positioning of the reed and magnetic locks can reduce, but not completely eliminate, the possibility.

Operation of DA726

Example (DA726-3): Door A is opened, door B & C will lock until door A is closed.

Ordering information

Operation of DA726

Example: DA726-xxVDC-4

Four door, normally free interlock.

Door A is opened, doors B, C & D will lock until door A is closed.

Technical information

Download Data sheet

Switching contacts - (Door release)

Interlocked doors Three
Delay timer None
Contact configuration Single pole change-over (Per door)
Voltage Maximum 30V
Current Maximum 1A
Connection type PCB terminal block (2.5mm²)

Input
Voltage10.5 > 14V DC
Power consumption< 50mA
Connection typePCB terminal block (2.5mm²)
Door monitoring contactsRequires; 2x normally open switch contacts (door is assumed to be closed when closed-circuit, and door open on open-circuit )
Request to exit contactsRequires; 2x normally open switch or +12V DC feed (Request to open door is made on closed-circuit or +12V DC feed )

Environmental

Operating temperature -10°C to +40°C
Storage temperature -20°C to +50°C
Operating relative humidityMaximum 95% non-condensing
Ingress protection N/A

Dimensions:

Product

Width 155mm
Height 207mm
Depth 55mm
Weight < 1.05Kg
Enclosure material Mild steel
Finish Powder coated RAL9016 (White)

Shipping packaging

Width 170mm
Height 220mm
Depth 65mm
Weight *including product< 1.2Kg
Packaging materialCardboard

Ordering information

GTINPart codeDescription
DA726-12VDC-312V DC-Powered three-door normally open interlock

Other models

GTINPart codeDescription
DA726-12VDC-212V DC-Powered two-door normally open interlock
DA726-12VDC-412V DC-Powered four-door normally open interlock
DA726-24VDC-224V DC-Powered two-door normally open interlock
DA726-24VDC-324V DC-Powered three-door normally open interlock
DA726-24VDC-424V DC-Powered four-door normally open interlock

Available from all good distributors.