features ? waterproof panel seal ?ip67 approved to bs5420 (iec144) ? flame retardant body ?ul94-vo approved material ? high dielectric strength ? wide temperature range ?up to 80? ? robust construction ?for harsh environments ? positive tactile response ?for operator feedback ? operates at up to 10 amps non-standard options ? 2 pole versions ? alternate action versions ? pcb terminals ? gold contacts ? fully sealed with flying leads data sheet no. 76-91500 series 76-91 flexibutton ?panel sealed range flexibutton e 4 page (11114) 27 07 2000 5:11 pm page 2
technical information series 76-91 a robust pushbutton switch designed for demanding environmental applications. the snap- action switch mechanism provides high quality switching behind an ice-proof, flexible actuator. the body of the flexibutton is flame retardant to ul94-vo approval and the switch is panel sealed to ip67. the range offers the choice of six button colours with solder/quick connect terminals as standard. single and double pole versions are available in momentary or alternate actions. a locknut and sealing washer are supplied with the switch. mechanical travel 3,3mm reference life (min) 10 6 cycles operating force (nom) 12n (max) 15,5n contact bounce <5ms panel thickness (max) 4mm locknut tightening torque (max) 2,85nm environmental & physical ingress protection ip67 impact rating 2 joules shock (min) 10g temperature -40? to +80? body material glass filled polyester button material polyether block amide sealing washer material nitrile rubber contacts fine silver terminals tin plated brass electrical current (max) silver contacts 10a resistive 250 v a.c. current (min) silver contacts 10ma resistive 5v d.c. life (min) 10 5 cycles dielectric strength 1kv a.c., 1 minute insulation resistance (min) 1g @ 500v d.c. contact resistance (max. initial) 25m flexibutton e 4 page (11114) 27 07 2000 5:11 pm page 3
ordering information button style momentary 1 pole 1 momentary 2 pole 2 panel mounting & construction information the flexibutton mounts easily into panels not exceeding 4mm thickness. front panel sealing to ip67 is achieved by use of sealing washer which is fitted to the switch before it is inserted into the panel hole cut-out. momentary single pole versions mount in a din standard 22,5mm diameter hole, or by reversing the special locknut, will mount in a 25mm diameter hole. alternate and double pole versions mount into 25mm hole*. the locknut is then screwed on from behind the panel to secure the switch in place. the tightening torque is from 1,5nm to 2,85nm. *(for 22,5mm fixing on these versions, please consult the factory.) ingress protection impact key 76-91 /439088 indicator colour white 1 red 2 green 3 blue 4 yellow 5 black 6 flexibutton e 4 page (11114) 27 07 2000 5:11 pm page 4
technical information series 76-91 flexibutton panel sealed range itw switches, division of itw limited, norway road, hilsea, portsmouth po3 5ht, uk tel: +44 (0)2392 694971 fax: +44 (0)2392 666352 website: www.itwswitchcon.com due to our policy of continuous product development, itw switches retain the right to change the specification at any time with out prior notice. designed & printed in the uk. data sheet no. 76-91500 product dimensions sealing washer thickness 1,12mm locknut 6,3 20,7 8,7 no nc nc no single & double pole alternate double pole momentary single pole momentary 2,8 x 0,55 45,7 40,5 20,7 9 max ?0 all dimensions in millimetres maximum panel thickness 4 mounting hole size ?2,5 application references ?mining ?field equipment ?dairy ?hydraulic vehicles ?exterior security call points ?marine instrumentation ?car wash machinery further information for further information on our complete range of switch products, visit our website www.itwswitchcon.com or contact our sales office. circuit form no form z no nc nc flexibutton e 4 page (11114) 27 07 2000 5:10 pm page 1
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