Data Sheet no. 76-91500
SERIES 76-91 FLEXIBUTTON – PANEL SEALED RANGE
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°C
•
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
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
Life (min)
Operating force (nom)
(max)
Contact bounce
Panel thickness (max)
Locknut tightening torque (max)
3,3mm reference
10
6
cycles
12N
15,5N
<5ms
4mm
2,85Nm
Electrical
Current (max) silver contacts
Current (min) silver contacts
Life (min)
Dielectric strength
Insulation resistance (min)
Contact resistance (max. initial)
10A resistive 250 V a.c.
10mA resistive 5V d.c.
10
5
cycles
1KV a.c., 1 minute
1GΩ @ 500V d.c.
25mΩ
Environmental & Physical
Ingress protection
Impact rating
Shock (min)
Temperature
Body material
Button material
Sealing washer material
Contacts
Terminals
IP67
2 Joules
10g
-40°C to +80°C
Glass filled polyester
Polyether block amide
Nitrile rubber
Fine silver
Tin plated brass
Ordering Information
Button Style
Momentary 1 Pole
Momentary 2 Pole
1
2
76-91
/439088
Indicator Colour
White
Red
Green
Blue
Yellow
Black
1
2
3
4
5
6
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
Data Sheet no. 76-91500
SERIES 76-91 FLEXIBUTTON
Panel Sealed Range
Technical Information
Product Dimensions
9 max
Sealing Washer
Thickness 1,12mm
6,3
20,7
40,5
45,7
Locknut
20,7
8,7
NO NC NC NO
2,8 x 0,55
Single & double pole alternate
Double pole momentary
Single pole momentary
ø30
Maximum panel thickness 4
Mounting Hole Size ø22,5
All dimensions in Millimetres
Circuit Form
NC
NO
FORM Z
Application References
• Mining
• Field Equipment
• Dairy
• Hydraulic vehicles
NC
NO
• 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.
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 without prior notice.
Designed & printed in the UK.
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