Actuators of the SQ type range for open-close duty and positioning duty 1/4 turn are rated for class A and B or types of duty S2 – 15 min.
Explosion-proof devices must be used in plants where potentially explosive atmospheres are likely to occur. These devices are designed so that they will not act as ignition source. Their constructive measures prevent the occurrence of ignition sparks or hot surfaces.
The modulating actuators of the SQREx range are rated for class C or types of duty S4 – 25 %.
