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Mechanical single position limit switches with positive opening

Mechanical cam switches

Available in:

2 versions

With mechanical single position limit switches in smaller configurations, safety switching elements are not feasible. In contrast, solutions with positive opening already exist. In these, the switching process is triggered by a rigid plunger that actuates a mechanical switching element with forcible opening. However, should this plunger move, it breaks the contact. This means that you have reliable control of switching processes, even with welded contacts.


  • Also suitable for welded contacts
  • Two model series
  • Two-chamber system with IP67 degree of protection: Wear-free membrane with hermetic separation of the plunger mechanism and the switch interior
  • Maintenance-free, self-lubricating ram guide with plain bearing bush
  • Rigid plunger

2 versions

Order code Price Switch positions, number Plunger style Version Connection type Switch position spacing

BNS – EGT 813 (Safety switching) - Configurable

BNS – EGT 813 (Safety switching) - Configurable
with forced opening, Safety EN 60204-1 e = 68, 69: solder connection
e = 183, 185, 186, 187: screw terminal


BNS 813-100-R-69
1 1. Switch position: Role with forced opening Solder connection

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