Steute, distributed by NHP, has delivered the switchgear series ZS 92 that has been designed for extreme conditions.

The ZS 92 range can operate in extreme temperatures from -40°C up to +85°C is guaranteed with the metallic components made of stainless steel. Suitable for application in open-cast mining, gravel plants, quarries and sand pits, recycling plants, waste industry, coal-fired power stations and heavy industrial plant manufacturers.

The series is available in two basic designs: the emergency pull-wire switches ZS 92 S and the ZS 92 SR. The ZS 92 S has a reliable emergency-stop function and wire-break monitoring for bigger plants. Actuation using a turning lever is insensitive to external influences, for example, vibrations, temperature differences and so on.

In the emergency-stop position, the switch latches and it can be unlatched by actuating a reset lever. The switches can also be adapted to individual applications with the aid of numerous accessories.

The belt alignment switches ZS 92 SR monitor the running of conveyor belts. As soon as a belt runs off-centre between the conveying rolls, the switch is activated.

An additional feature is the staggered contacts with individually adjustable switching points. The switching points, for warning and for switching off, can both be individually set within a range of 5° to 35°. Facilitated by staggered contacts, the switch first generates a warning, and, at further actuation, it stops the belt. These pre-warning contacts reduce the dead time of the conveyor with the operator still having a chance to react before the belt stops.