Turck Banner OTB and LTB Optical Touch Buttons
Banner Logo 

OTB & LTB . Direct ergonomic replacements for mechanical push switches 
. Require absolutely no physical pressure to operate 
. Eliminate the hand, wrist, and arm stresses associated with mechanical push buttons 
. 30 mm external threads; directly replace oil-tight pushbuttons 
. Durable black polysulfone (or Lexan®) and VALOX® housing; rated NEMA 1, 3, 4, 4X, 12, 13 (IEC IP66) 
. Highly immune to ambient light and sources of EMI/RFI 
. Both momentary action (OTB Series) and alternate action (LTB Series) available

OTB Series are momentary action optical touch buttons
LTB Series are alternate action (latching) optical touch buttons

Supply Voltage
OTB Series: Models for 105 to 130V ac, 210 to 250V ac (50/60 Hz), 10 to 30V dc, or 20 to 30V ac/dc.
LTB Series: Models for 105 to 130V ac or 210 to 250V ac (50/60 Hz).

Output Configuration
OTB Series: AC and ac/dc models have SPDT electromechanical relay (one N.O. contact, one N.C. contact). DC models. Choice of complementary NPN (sinking) or PNP (sourcing) models.
LTB Series: SPDT electromechanical relay (one N.O. contact, one N.C. contact).

Indicator LEDs
Two indicator LEDs. One lights whenever power is "on"; the other lights whenever the output relay is activated.

Operating Temperature Range
-20 to +50°C (-4 to +122°F).

Black polysulfone (or Lexan®) and fiber-reinforced VALOX® housing. Electronics fully epoxy-encapsulated. Totally sealed, non-metallic enclosure. Threaded base has M30 x 1,5 external threads and 1/2" NPSM internal threads. Base requires a 1-3/16" diameter mounting hole (fits most standard automotive-size "jumbo" legend plates and oiltight pushbutton holes). OPTO-TOUCHs are rated NEMA 1, 3, 4, 4X, 12, and 13; IEC IP66.

Switch diagram

Switch Diagram Pt.2

6-1/2 foot or 30-foot long attached cable or mini-style quick-disconnect cable fitting.

Environmental Considerations (models with polysulfone housing)
Prolonged exposure of the OPTO-TOUCH to direct outdoor sunlight will cause embrittlement of the polysulfone housing. Window glass effectively filters longer wavelength ultraviolet and provides excellent protection from sunlight. Contact the factory Application Engineering Department regarding outdoor applications.

Environmental Considerations (models with Lexan® housing)
Prolonged exposure of the OPTO-TOUCH to hot water and moist high-temperature environments above 150°F (66°C) should be avoided. Aromatic hydrocarbons (such as xylene and toluene), halogenated hydrocarbons, and strong alkalis should be avoided. Clean periodically using mild soap solution and a soft cloth. Avoid strong alkaline materials.

For more information contact LPC

Crouzet | Seeka-Takex | Proximity Sensors | Brad Harrison | Siemens | Ege I Omron I Erwin Sick I GOSwitch

Home I Suppliers I Price & Availabilty I Newsletters I Sensor Sourcing I New Products I Special Offers I Site Map I Links I Contact