Data Sheet no. 76-94700
SERIES 76-94 – PANEL SEALED RANGE
FEATURES
•
Non-spark material
•
Explosive-proof materials used
•
Wide temperature range
– from -40°C to +125°C
•
Panel sealed product
– Protection against immersion
•
Impact rating - 20J
•
Choice of actuators and styles
-Push-buttons, rotary and
panel lamp
NON-STANDARD OPTIONS
•
PCB terminals
•
Gold contacts
•
2 poles available
•
Colour variants
•
In-filled engraving
(Push-button only)
Technical Information
Series 76-94
The 76-94 Series has been designed to cover a wide range of harsh environmental applications.
The range is available in 3 styles, push-button, rotary and panel lamp.
The push-button comes in 4 button styles with 3 colour options and has solder/faston
terminals as standard. The rotary is a single pole, 2 position, snap action switch with green or
red spot indicator on the black actuator. To complete the range an indicator version is available
with red, green or amber lens.
The entire range is panel sealed to IP67 and due to the construction and the materials used,
are all capable of surviving the impact of a 5kg mass dropped from 40cm (20J). All the bezels
and the actuators of the push-buttons and rotaries are made from a non-sparking zinc alloy
whilst the panel lamp lens is manufactured from polycarbonate, which maintains the
specification of the range.
Non-standard options for the range include custom colours, PCB terminals, gold contacts and
2 pole variants.
The features of the Series makes it ideal for robust, potentially explosive environments, such
as the mining industry.
Specification
The push-button and rotary variants utilise ITW Switches’ proven Series 16 snap action
microswitch.
Mechanical
Travel
Life (nom)
Operating force
Contact bounce
Panel thickness (max)
2,5mm (PB)
2 x 10
6
cycles (PB), 50,000 cycles (R)
1 x 10
5
cycles (Latched Push-button)
7N (PB)
5ms (PB, R)
6mm (PB, R, L)
Electrical
Dielectric strength
Insulation resistance
Contact resistance (initial)
Current rating (max)
Life
Illumination type
1000V RMS (PB, R)
1GΩ (PB, R)
25mΩ (PB, R)
10A resistive 250V a.c. (PB, R)
100,000 cycles 20°C (PB, R)
50,000 cycles 70°C (PB, R)
T1
3
/
4
Wedge base bulb (L)
Environmental & Physical
Ingress protection
Impact rating
Shock
Operating temperature range
Body material
Actuator material
Lens material
Contact material
Terminal material
IP67 (PB, R, L)
20J (PB, R, L)
50g (PB, R, L)
-40°C to +125°C (PB, R, L)
Zinc alloy (PB, R, L)
Zinc alloy (PB, R)
Polycarbonate (L)
Fine silver (PB, R)
5µm bright acid tin plate nickel flash
undercoat (PB, R, L)
Key
PB
R
L
Push-button
Rotary
Panel Lamp Indicator
Ordering Information
Button Style
Flush
Raised
Large circular (latching)
Large circular (momentary)
Domed
Panel lamp indicator
Rotary
1
2
3
4
5
6
7
76-94
/xxxxxx
Indicator Colour
Push-button & rotary
Red
Green
Amber
(No addition to the part number is
required for the indicator after this)
0
R
G
A
Termination & No. of Poles
Solder/faston
Solder
Solder
1 pole
1 pole
2 poles
439088
4044
804
Indicator Colour
Black
Red
Green
(For rotary: standard black actuator, specify
colour of dot indicator, red & green only)
B
R
G
Panel Mounting
& construction information
The 76-94 mounts easily into panels not exceeding 6mm thickness. Front panel sealing to IP67
is achieved by use of the sealing washer which is fitted to the switch before it is inserted into
the panel hole cut out. It is held into the panel by means of a zinc lock nut, tightened down to
a torque of between 1,5Nm to 2,85Nm to achieve the correct sealing pressure.
It is mounted into a standard 22,5mm diameter hole and a double ‘D’ flat is provided to
prevent rotation if required.
Lamp Construction
& Multi-pole Information
The 76-94 panel lamp variant is supplied with a quick release bulb holder that will accept a T1
3
/
4
wedge base filament lamp. Because of the wide range of illumination available (different
voltage lamps, multi chip LEDs etc.), we do not supply a bulb as standard although we are
prepared to do so if required.
The push-button and rotary versions have a non-standard option of 2 poles. The 2 pole switch
is provided separate to the switch body and must be fitted, via a spring clip, after the switch
body has been mounted in the panel.
For more information, please contact the Sales Office.
Ingress Protection Impact Key
Data Sheet no. 76-94700
SERIES 76-94
Panel Sealed Range
Technical Information
Product Drawings
Ø35,0
Ø30,0
Ø30,0
9,0
43,0
15,0
20,0
51,7
37,0 23,0
23,0
23,0
5,0
5,0
8,7
Solder/
taston terminal
Flush
Raised
Domed
Ø46,5
Ø30,0
Ø30,0
18,0
15,0
9,5
49,0
23,0
43,0 23,0
42,5
23,0
8,0
29,5 2 Pole Version
5,0
5,0
Large Circular
Switch body dimensions:
A clearance is required
depending on tolerance
Rotary
Panel Lamp
All dimensions in Millimetres
Circuit Form
NC
NO
FORM Z
Application References
• Military environments
• Robust industrial
• Vandal resistant requirements
• Mining industry
NC
NO
• Petrochemical
• Process control
• Material handling
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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