The Swaraj Secutech ST-4 bollard is engineered for high-duty perimeter defense and hostile vehicle mitigation. Built around a high tensile carbon steel cylinder, the unit is offered in two core dimensional formats: the ST4 A variant features an outer diameter of 220 mm with a cylinder height/length of 700 mm or 900 mm, while the ST4 B variant provides a heavy-duty 275 mm diameter with an extended cylinder height/length between 900 mm and 1000 mm.
Dynamic operational specifications include a standard raising and lowering actuation speed of 5 to 6 seconds under normal cycling. An optional Emergency Fast Operation (EFO) circuit can be configured to deploy the bollard in 2 seconds. The ST-4 holds an IP68 ingress protection class, rated to operate smoothly while submerged in water, and maintains a 100% continuous duty cycle across ambient temperature ranges spanning -30 °C to +65 °C with a mechanical Mean Cycles Between Failures (MCBF) rating of 5,000,000 cycles. Impact resistance is certified to K4 and IWA 14-1:2013 standards, classified under designation Bollard V/7200 [N2A] 48/90/0.1.
