Mechanical Safety Door Switch PA66 IP67 400V AC-15 Interlock 1NC 2NC Contact Position Switch

The VSDP mechanical safety door switch is the contact-based backbone of machine guarding: a positive-opening position switch that reports whether a guard door, hinged panel or sliding cover is really closed. A PA66 flame retardant body, gold plated silver alloy contacts and an IP67 seal keep it working in coolant mist, dust and washdown zones, while five contact configurations from a single 1NC contact up to 3NC allow one part family to serve simple panels and redundant safety circuits in Europe, North America and Southeast Asia.

• Positive opening contacts: forced detachment force above 60 N and a separation distance of at least 10 mm guarantee that the contacts open mechanically even if a spring fails.
• Five contact configurations: 1NC+1NO, 1NC, 2NC, 2NC+1NO and 3NC versions cover single channel, dual channel and redundant circuits.
• IP67 sealing: dust tight and protected against temporary immersion, suitable for machining centres and food equipment.
• PA66 flame retardant housing: self-extinguishing body with a silver alloy, gold plated contact block rated for low level signal circuits.
• One million mechanical operations: tested life above 1,000,000 cycles at up to 20 operations per minute.
• Six operation keys: DE-K1 to DE-K6 actuators with a rotatable head in 90 degree steps for flexible installation on any door geometry.
• 400 V / 8 A rating: AC-15 utilisation category with 2 A working current for direct control of contactors and relays.

Select the model from the required switching logic: single channel monitoring uses VSDP-C1, dual channel monitoring uses VSDP-C2, and redundant circuits or category 4 architectures use VSDP-C4. The NO contact of VSDP-C0 and VSDP-C3 is intended for door status feedback to the machine controller, not for safety functions.

The series is installed on hinged and sliding guard doors of machining centres, injection molding machines, press brakes, packaging lines, woodworking machines, robot cells, conveyor covers and test fixtures. Machine builders in Europe use the 2NC version for dual channel monitoring with a safety relay, while Asian integrators often specify the 2NC+1NO version to report door status to a PLC without extra wiring.

• If the door hinge radius is smaller than 300 mm, choose a different actuator or add a radius extension, otherwise the key may not enter the slot.
• Mount the switch so that the key is within 1 mm of the centre of the insertion hole for reliable actuation.
• Use the NC contacts for the safety circuit and reserve the NO contact for monitoring only.
• After installation, verify forced opening with a test according to the machine risk assessment and record the result.

Switches are packed ten per inner box and one hundred per export carton, each with mounting screws and an instruction sheet. Operation keys are packed separately by type. Every batch is function tested for contact continuity, forced opening and seal integrity before shipment, and CE documentation is supplied with each order.