Electromagnetic Safety Door Switch 1300N Locking Force IP67 DC24V Guard Locking Interlock Switch

The VSD electromagnetic safety door switch keeps a guard locked until the machine is genuinely safe, then releases it on command. A solenoid with 1300 N of holding force blocks the operation key, and the door monitoring contacts stay closed until the tongue is fully inserted, so the sequence is mechanical rather than logical. With 2, 4 and 6 contact groups, twelve 4-group contact arrangements, a green pilot lamp and an emergency release, one series covers interlocked doors on machining centres, robot cells and packaging equipment in Europe and Southeast Asia.

• 1300 N holding force: the solenoid bolt resists manual opening forces far beyond what an operator can apply, protecting the hazard until the machine is stopped.
• Two locking principles: type 4 offers mechanical locking with DC24V electromagnetic release, type 7 offers DC24V electromagnetic locking with mechanical release for power-to-lock duties.
• Multiple contact groups: 2, 4 and 6 group versions with up to twelve contact arrangements, so door monitoring and lock monitoring are handled by one device.
• Green pilot lamp: a 24 VDC indicator shows lock status at the door, reducing the temptation to force the guard.
• Emergency release: a mechanical release on the body allows access in the event of a power failure or an emergency inside the cell.
• IP67 and PA66 housing: flame retardant body with gold plated silver alloy contacts for reliable low level switching in wet and dusty plants.
• Six operation keys: DE-K1 to DE-K6 actuators with a rotatable head in 90 degree steps for hinged, sliding and lift doors.

Model code VSD + contact code + locking type 4 or 7 + head material E (plastic) + tube size M. Type 4 models lock mechanically and release on DC24V; type 7 models lock on DC24V and release mechanically, which is the safer choice when a power loss must never unlock the guard. The K6 series adds two contact groups, taking the total to six.

Guard locking is required wherever a machine cannot stop instantly: machining centres with long spindle run-down, robot cells, injection molding machines, presses with flywheels, palletizing systems, packaging machines with rotating parts, automatic doors on test cells and vertical lifters. The 1300 N holding force also suits heavy sliding doors and gates on automated storage systems where a tongue can be levered open.

• Use type 7 (electromagnetic locking) when the guard must stay locked after a power failure and the process cannot be interrupted.
• Wire the door monitoring contacts and the lock monitoring contacts to separate channels of the safety relay for the required diagnostic coverage.
• Make certain the key is within 1 mm of the centre of the insertion hole; misalignment is the most common cause of a jammed tongue.
• Provide the emergency release with a tamper-proof seal and record every manual release in the maintenance log.

Switches are packed five per inner box and fifty per export carton, each with mounting screws, a wiring diagram and an instruction sheet. Operation keys are packed by type. Every unit is tested for holding force, contact continuity and seal integrity before packing, and CE documentation travels with the shipment.