footswitches px/pa heavy duty footswitches with shrouded pedal to prevent accidental operation n large shroud to allow operators to wear industrial protective footwear n pedal interlock lever to prevent operation unless the operators foot is fully inside the pedal shroud n 10a 500vac/600vdc rated n bifurcated contacts for low resistance and high reliability C suitable for switching low-level electronic currents n positive break of nc contacts for safety circuits in conformity with bs60947-5-1, vde 0660 part 206 and iec 337-1 n a second contact block can be fitted giving a total of four contacts in various combinations of no and nc n unshrouded models (stop type) with red terminal cover n impact-resistant glass-reinforced thermoplastic housing n non-skid rubber feet plus floor-fixing holes if required n double insulated for electrical safety n mechanism protected against dirt and foreign matter n cable entry hole with pg13.5 thread n ip65 options and ordering codes specifications cable glands contact blocks contact ratings px 10111 shrouded, snap-action 1no + 1nc b501 1no + 1nc snap-action px 10311 shrouded, slow-action 1no + 1nc b601 1no + 1nc slow-action px 10121 shrouded, latching, snap-action 1no + 1nc pa 20101 unshrouded, snap-action 1no + 1nc b901 2nc slow-action pa 20701 unshrouded, slow-action 2nc pa 20321 unshrouded, latching, slow-action 1no + 1nc b1001 2no slow-action plug and socket footswitches footswitches: additional contact blocks if required: many other footswitch models available including double-pedal types - contact imo for availability rated thermal current ith 10a rated working voltage 500vac/600vdc initial contact resistance <25 mohms contact gap >2.5mm (2 x 1.25mm conforming to vde 0660 part 206) contact material silver dielectric strength 2000vac, 50/60hz for 1 minute between open contacts 2000vac, 50/60hz for 1 minute between current-carrying parts and ground ambient operating temperature C25 to +80 deg. c ambient humidity 95% r.h. maximum wire size 2 x 1.5mm 2 flexible, 2 x 2.5mm 2 solid conduit entr y pg13.5 bs/en 60947-5-1 ac15 230vac 6a 400vac 4a 500vac 1a dc13 24vdc 6a 125vdc 1.1a 250vdc 0.4a cable glands are available to enable standard multi-core cables to be connected without the use of conduit. two sizes are possible: part number cable size pg13.5 ?9-12mm see previous page pg13.5/6 ?6-9mm for diagram all px series footswitches can be converted to a plug-in style by the addition of an adaptor. see previous page for diagram. the adaptor is screwed into the footswitch and the four flying leads connected to the four terminals of the contact block. suitable 4-wire plug leads are available C see pages 332 to 335 ratings 250vac/300vdc 3a ip67 the contact blocks can also be purchased separately without the footswitches and be used as stand-alone limit switches. the contacts are electrically separated so it is possible to connect different voltages to no and nc circuits i.e. zb contacts. the nc contacts also have positive break, i.e. suitable for safety circuits. contact arrangements: note: there is space under the terminal cover to allow the fitting of a small amount of control components, e.g. relays, terminal blocks etc., which should be secured to prevent interference with the footswitch mechanism. terminal screws: m3.5 with rising cable clamps. maximum screw tightening torque: 0.8nm (8kg cm). 13 14 21 22 1no+1nc b501 b901 11 12 21 22 2nc 13 14 21 22 1no+1nc 13 14 23 24 2no b601 b1001 new models
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