Sensors & Switches Newsletter Signup
Get the Engineering360
Stay up to date on:
Sensor and switching devices that are found in every industry, plus innovations, trends and upcoming events.

Heavy Duty Plastic Safety Interlock Switch

Product Announcement from Schmersal Inc.

The AZ16 Series is in a class by itself ... providing many design innovations to protect workers from injury. The Series AZ15/16 is a safety interlock switch with separate actuator key designed for use with movable machine guards/access gates which must be closed for operator safety. Their positive-opening NC contacts provide a significantly higher level of safety than conventional spring-driven switches whose contacts can weld or stick shut.

The IP67 rated thermoplastic housing makes them ideal for interlocking safety guards in hostile environments. It features a non-removable actuating head and highly tamper-resistant actuating mechanism which is difficult to defeat with simple tools, tape, bent wires or other readily available means. This rugged, tamper-resistant design ensures safe, reliable long term performance and reduces liability exposure.

The AZ16 has a wide selection of options and accessories such as LED’s, gold contacts, flexure-mounted actuating keys and universal mounting kit. These enable easy installation and effectively address a wide variety of machine guard interlocking applications – without compromising operator access/productivity. That’s why the AZ16 is one of the best selling safety switches in the world.

Features at a glance:

IP67 rated thermoplastic enclosure tolerates hostile environments


Large wiring compartment

4 key entries for mounting flexibility

A wide variety of actuator options

Long mechanical life

High level of contact reliability with low voltages and currents

3 cable entries or prewired connector

Wide selection of accessories to meet diverse application requirements

Individually coded keyed version available (AZ16Zi)

AS-I compatible version available (AZ16 AS)

EX rated intrinsically safe version available (EX AZ16)

Electronic sensor (CSS16) or coded magnet (BNS16) versions available