Safety Products

Enicstra stocks the full range of machine safety devices used to meet ISO 13849 and IEC 62061 requirements on industrial machinery: emergency-stop pushbuttons and pull-cord switches, safety light curtains and area scanners, safety relays and programmable safety controllers, gate interlocks (with and without guard locking), safety mats and edges, two-hand control units, and the safety-rated I/O modules that tie these devices to PLC-based safety systems.

Brands carried include Pilz PNOZ and PNOZmulti, Allen-Bradley Guardmaster (440 and MSR series), Siemens Sirius Safety, Sick safety products, Banner safety, Schmersal, Euchner, Omron G9SX, Keyence safety, and Fortress Interlocks. Obsolete safety devices are sourced through our supplier network. Each unit ships with a 12-month functional warranty on the device. Note: the device warranty covers function — safety-circuit validation in the installed application is the integrator's responsibility, independent of the device.

For an obsolete safety device, send the OEM part number for a quote within 1–2 business days.

Subcategories

Machine Safety

Machine safety solutions — hardware to implement risk-assessment-driven protection on industrial equipment.

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Buying guide

Choosing Safety Products components

Safety products live under a different replacement constraint than general automation parts: substituting a safety device may change the safety function, the performance level, and the documented risk assessment. Replacing in kind preserves the existing safety case; switching brands or models almost always triggers re-validation.

Specs to confirm before ordering a safety device:

Exact OEM part number including all option codes
Performance Level (PL c, d, e per ISO 13849) and/or SIL (CL1, CL2, CL3 per IEC 62061)
Number and type of safety outputs/contacts
Auxiliary outputs for status to PLC (not safety-rated)
Supply voltage: typically 24 VDC, sometimes AC variants
Input channels and monitoring (single-channel, dual-channel, dual with cross-monitoring)
Reset behavior (automatic, manual, monitored manual)
Mounting and DIN-rail width
Cable/connector style for E-stops, interlocks, and scanners

Common gotchas: a safety relay rated to PL d cannot be silently replaced with one rated to PL c — that is a downgrade of the safety function and is a documentation/validation event. Configurable safety controllers (Pilz PNOZmulti, MSR210P, Sick Flexi Soft) require the original configuration file to be loaded onto the replacement unit, or the configuration is re-engineered. Safety light curtains and area scanners have specific resolution and response time ratings that affect the safety distance calculation; substituting a unit with different specifications changes that calculation.

Typical applications: E-stop monitoring on machine tools, light-curtain protection on press brakes and stamping presses, area scanning around robotic cells, gate interlocks with guard locking on hazardous machinery, and safe stop / safe limited speed coordination with safety-rated drives. For legacy machines, exact OEM safety device replacement preserves the existing risk assessment and validation documentation.

For obsolete safety products, send the OEM part number for a sourcing quote.

Related categories Frequently asked questions

Are surplus safety devices still safety-rated?

The OEM safety rating is the property of the unit when it was manufactured; surplus units retain that rating. We do not re-certify devices. The 12-month warranty covers functional failure of the device, not the safety case of the installed system, which the integrator validates.

Can I substitute a different brand if the OEM is discontinued?

Sometimes, but it changes the safety function in documentation terms and requires re-validation per ISO 13849. Sourcing the exact OEM part from surplus keeps the existing safety documentation valid, which is usually the lower-effort path.

Do you stock obsolete Pilz, Sick, and Allen-Bradley safety devices?

Yes. Discontinued PNOZ X-series, retired Sick C4000 light curtains, end-of-life 440R safety relays, and earlier S300 laser scanners are sourced through our supplier network.

Are configuration files included with configurable safety devices?

Surplus units typically ship in their last-imaged or factory-default state. The application configuration is created in the OEM tool (PNOZmulti Configurator, ASIMON, Flexi Soft Designer) by the integrator and loaded onto the device.

How fast is shipping?

In-stock items ship same or next business day from St. Louis. Free US over $50, free international over $350.

What is the warranty?

12-month functional warranty on the device. Safety-function performance in the application is the integrator's responsibility, independent of the device warranty.