351M Dropbolt

Product description

The electronic swing door strike 351M.80 is equipped with an innovative quiet electric motor drive and is designed for the locking of swing, double swing, and carousel doors. It is suitable for horizontal or vertical installation in the door frame.

The door contact and the armature contact are designed as potential-free switching contacts. The door contact is switched magnetically when the door is closed. The armature contact can be used to monitor locking status.

The 351M.80 swing door electric strike works according to the fail-safe unlocked operating principle. If the power is shut off or the power fails, the door can be opened. If power is connected and the door is in the "Door closed" position for at least 1 s

Overview of Advantages

  • Very quiet locking and unlocking, silent during permanent release
  • Suitable e.g. for double-action swing doors and single-action swing doors, interlocking doors and special doors
  • Suitable as a supplementary locking system for installation in fire doors
  • Vertical and horizontal universal installation position in the door frame or in the door leaf
  • Holding force of 5000 N
  • Safe unlocking under pre-load of up to 5000 N
  • 12V DC to 48V DC multi-voltage, controlled DC voltage
  • Monitoring contact and armature contact integrated
  • Compatible with Model 351U


  • Suitable for fire doors according to British Standard BS476
Monitoring contact (RR) Yes
Diode (05) Yes
Armature monitoring contact Yes
Fail-unlocked Yes
Max. pre-load 5000 N
Break-in resistance 5000 N
Material housing Stainless steel
Operating temperature range -15 °C to +50 °C
Bolt throw 10 mm
Height 200 mm
Width 25 mm
Depth 42 mm
Variants that can be ordered
Order number Description
351M.80-----N91 With striking plate, counterpart and spacer plates