Safety Door Locks & Interlocks
Mechanical, electromagnetic and RFID-coded guard door interlocks with up to 2000 N holding force.

QSD-AQMS-K4-L2 Safety Door Latch
A lever-action safety door latch that holds a guard door closed and provides the mounting point for an interlock actuator on retrofits and fabricated guards.
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QSDP Mechanical Safety Interlock Switch
A mechanical two-contact interlock for guard doors that need a simple, hard-wired safety contact. Flame-retardant Pa66 housing, copper contacts, IP67 sealing
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QSD-K6 & SDP Electromagnetic Safety Interlock Series
Electromagnetic interlocks with 2, 4 or 6 contacts and a 1300 N locked-state tensile strength — for machine tools that need more contacts than a basic interl
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QSD-M3 Non-Contact RFID Safety Switch
A coded, non-contact interlock with no mechanical actuator to align: 0–10 mm horizontal and 0–8 mm vertical operating distance, dual-channel NPN/PNP output,
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QSD-M01 Non-Contact Magnetic Coding Safety Switch
A magnetic-coded interlock with two safety output contacts and a wide 8 mm operating / 17 mm release window — a low-cost coded alternative where a mechanical
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QSD High-Performance Safety Interlock Switch
An electromagnetic / mechanical locking interlock with ≥2000 N holding force, ≤2 mm bolt insertion tolerance and 1,000,000 operating cycles — for heavy guard
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DE-K Series Actuation Keys
Six actuator key shapes for the QSD / QSDP interlock range — T-shaped, L-shaped, long-throw and adjustable versions, so the key can follow the door's closing
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