440N-ZPREC — Coded Rectangular Actuator for Non-Contact Safety Interlock Switches

The 440N-ZPREC is a rectangular plastic coded actuator for non-contact (RFID-based) safety interlock switches, used as the moving-guard-side component that the switch body senses when the guard is closed. Designed for standard (lower security) coding rather than unique coding, it pairs with compatible switch bodies in the same family to achieve Category 4 / PLe per ISO 13849-1 and SIL 3 per IEC 61508.

Specifications

Parameter	Value
Part Number	440N-ZPREC
Function	Coded actuator (non-contact safety switch)
Shape	Large rectangular
Material	Plastic
Coding Type	Standard (low) coded
Compatible With	Standard-coded non-contact interlock switch bodies in the same family
Safety Rating	Category 4 / PLe (ISO 13849-1), SIL 3 (IEC 61508)
Standard	Type 4 interlocking device per ISO 14119

The Actuator Half of a Non-Contact Safety Switch Pair

Non-contact safety interlock switches detect guard position through RFID coding and inductive sensing rather than a physical mechanical contact — the actuator (this component) mounts on the moving part of the guard, and the switch body mounts on the fixed frame, with no physical touching required between the two for the switch to register a closed, valid state within its rated sensing range. This eliminates the mechanical wear that contact-style switches experience from repeated physical actuation, and gives more tolerance for slight misalignment between the guard and frame than a rigid mechanical actuator would.

Standard coding (as opposed to unique coding) means this actuator will trigger any compatible standard-coded switch body — appropriate where the application doesn't require defeating-resistance against a deliberate attempt to substitute a different actuator to bypass the safety function. For applications where that higher defeat-resistance matters, the unique-coded actuator variant in the same family pairs only with a switch specifically taught to recognize that individual actuator's unique code.

FAQ

Q: Can this standard-coded actuator be used with a unique-coded switch body?

No. Standard-coded actuators and switch bodies must be matched with other standard-coded components in the same family — mixing standard and unique coding types isn't supported and will not achieve a valid sensing condition.

Q: How much misalignment can this actuator tolerate relative to the switch body?

Non-contact switches in this family are designed with meaningful sensing range and misalignment tolerance compared to mechanical contact switches, though the specific tolerance figures should be verified against the compatible switch body's installation documentation for the exact sensing range.

Q: Is this actuator itself a safety-rated component on its own?

The actuator contributes to the overall safety function's certified performance only when correctly paired with a compatible switch body and properly installed and validated as a complete system — it isn't independently safety-rated apart from that pairing.

Q: Does this actuator require any wiring of its own?

No. The actuator itself is a passive coded component with no electrical connection — only the switch body requires wiring into the safety circuit.

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