Electrical Power and Controls Inc.
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Schlegel Operators Devices, QUARTRON Series

Dimensions (mm)
Panel cut out: Ø16mm
Front dimensions:   25 x 25mm
Front bezel height: 12mm
Travel: 3mm

Catalog (PDF-22Pg)

Schlegel’s Quartron series combines the suitability and toughness of large control units to all kinds of machines with the optimum exploitation of panel surface and the small space requirement of 16mm units.

These square control units can be mounted closely together with a mounting grid of 25x25mm.  The contact blocks can easily be snapped onto the control units.

Quartron units are square with either a black or charcoal bezel, but the mounting hole is 16mm round. This series laid the foundation for leading the market position with 16mm control units.

Suitable Contact Blocks
BTL Contact Block


6mm travel

Lamp socket T5.5K (telephone slide base)

Connection = Fast-on terminals 2.8x0.8mm

C Contact Block


3mm travel

Lamp socket T5.5K (telephone slide base)

Connection = PCB mount terminals