Omron carries an array of safety switches designed to work together with hinged, sliding, or lift-off guards and barriers; when the guard is opened, the power supply to the machine is disconnected.  They offer both compact and non-compact rope pull safety interlock switches for mounting widths as small as 40 mm, rated to IP67 (NEMA6), and rope spans up to 200 m. Guard door locking safety switches are also available.

Safety interlock switches from Banner Engineering include SI-MAG Series 3-component magnet style switches that tolerate dirt buildup, washdowns, and misalignment; locking style switches with several choices of locking mechanisms and operating voltages; and compact plastic style safety interlock switches available in both limit switch and flat-pack styles.

Allen-Bradley offers interlock, trapped key, and safety limit safety switches. The interlock switches come in tongue interlock, guard locking, non-contact, and hinge configurations, and offer different options on how the switch can be operated and mounted on the guard. Safety limit switches are available in two styles: IEC or NEMA.

Allied Electronics sells safety switches from a long list of manufacturers, including STI, Microswitch, Banner Engineering, Hermetic Switch, and Omron. Products come in an assortment of contact forms, from 1 NC/NO to 2NC/1NO BBM; various voltage and current ratings; mounting types such as DIN rail, door, and panel; and termination options like cable, M16 + NPT adapter, M20 + NPT adapter, and screw. Many switches also come IP66 or IP67 rated, and RoHS compliant.

EE Controls specializes in safety interlock switches, rope pull switches, and other machine safety switches to protect personnel from hazardous machinery. Interlock switches are available with NEMA 4- or 12-rated thermoplastic bodies with door-holding force ratings of 2, 7, or 22 lbs., or with metal bodies with up to 23 lbs. of holding force.

Unimax has been manufacturing interlock and safety switch devices for over 25 years. The SAF captive key interlock safety switch provides guard inhibitive locking, suitable for removable, hinged, or sliding guards; both lock and enclosure are sealed to IP65 standard. The GW captive key safety interlock locks the guard closed while the machine is running, and switches power off before the guard can be opened.

Schneider Electric provides safety switches for light to heavy duty, as well as a variety of specialized models. General duty safety switches for residential and commercial applications (e.g. lighting, air conditioning, appliances) are available fusible and non-fusible, and 30-800 A rated for application loads up to 240 V. Light duty safety switches are available in three single-phase styles with a 30 A maximum rating, while heavy duty switches cover a range from 30-1,200 A with a 240 or 600 Vac maximum.

Schmersal offers a full line of point of operation machine guarding products, such as keyed interlock switches, hinged interlock switches, and safety-rated limit switches. Safety-rated limit switches include the Z/T235, which is available with a choice of six standard actuators that are mountable in any of four 90-degree positions, and the Z332, which is housed in rugged metal and IP65 rated.

Power Components offers interlock and rope pull safety switches from Banner Engineering. The interlock switches include SI-MAG Series 3-component magnet style switches that tolerate dirt buildup, washdowns, and misalignment, locking style switches with several choices of locking mechanisms and operating voltages, and compact plastic style safety interlock switches available in both limit switch and flat-pack styles, with a choice of actuators.  Rope pull switches are available in spans ranging from 6 to 100 m, with trip and latch switch models available; minimum switch life is 1 million.