Data Sheet no. 59500
SERIES 59 – MINIATURE SEALED PUSHBUTTON
FEATURES
•
Non-spark material
•
Wide temperature range
– Up to 125°C
•
Panel sealed – To IP67
•
High environmental
specifications
•
Gold contacts
•
Status illumination
NON-STANDARD OPTIONS
•
Overboot for protection
against icing
•
PCB terminals
•
High round bezel
•
Surface or sublimation
legend printing on the button
(non-illuminated version)
Technical Information
Series 59
The Series 59 is a range of miniature, momentary action, rugged panel sealed pushbutton
switches.
The Series is available with square or round bezel versions, with or without LED status
illumination.
A locknut is supplied with each switch.
A choice of body material is provided of either a non spark zinc alloy or a hard wearing
moulded PBT therefore making this switch suitable for use in most applications. It is panel
sealed to IP67 and is designed to be impact resistant. The small size, robustness and panel
sealing make this switch ideal in harsh environments.
Non-Illuminated Version
The non-illuminated range includes a choice of 7 button colours with solder terminal
connection. PCB terminals, a high round bezel, surface and sublimation printing are available as
non-standard.
Status Illuminated Version
An illuminated version is available in the round bezel versions with a choice of 3 button colours
and 2 high brightness LED colours. Non standard options include additional button and LED
colours (subject to minimum order quantities).
Mechanical
Travel (nom)
Life (max)
Operating force (nom)
Contact bounce (nom)
Panel thickness (max)
Panel cut out
2,3mm
1,000,000 cycles
3N
1ms
1,5 - 3mm
ø13,6mm (with ‘D’ flat)
Electrical
Switch & LED
SWITCH
Dielectric strength
Insulation resistance
Contact resistance
Current rating (typical)
1000V a.c.
1GΩ
50mΩ
400mA at 32V a.c. resistive
100mA at 50V a.c. resistive
125mA at 125V a.c. resistive
500,000 cycles
16VA a.c.
Life (min)
Switching power (max)
LED
Typical fwd voltage (VF at I operating)
Max fwd voltage (VF at I operating)
Forward current (I operating)
Meantime between failures
Luminous intensity (Iv at lopr)
Luminous intensity (Iv at lopr)
2,2V
3,0V
20mA
100,000 hours
Red LED – 100mcd
Green LED – 160mcd
Environmental & Physical
Ingress protection
Shock
Vibration
Non-Illuminated
Operating temperature range
-40°C to +125°C with zinc alloy body
-40°C to +105°C with PBT body
IP67
100g
DEF STD 07-55
Technical Information
Environmental & Physical
(continued)
Ordering Information
Illuminated
Operating temperature range
Body material
Button material
Contacts
Terminals
Salt mist
Soldering information
-35°C to +85°C
Zinc alloy (standard) or PBT
PBT
Gold plated nickel
Gold plated brass
BS2011 Part 2:1
320°C max for 3s
Body Style
Standard round bezel
Standard square bezel
Illuminated round bezel
PBT round bezel
1
2
4
5
59 –
Termination
Solder terminals
1
Button Colour
Black
Red
Green
White
Yellow
Blue
Orange
(Illuminated version only available with Black,
Red and Green as standard. Non-standard
colours subject to MOQ’s)
1
2
3
4
5
6
7
LED Colour
Red
Green
(This digit is only required for illuminated part
numbers)
R
G
Panel Mounting
& Construction Information
The Series 59 mounts easily into panels of minimum 1,5mm and maximum 3mm thickness.
Front panel sealing to IP67 is achieved by the use of a sealing ‘O’ ring which is fitted behind
the bezel of the body of the switch before it is inserted into the panel hole cut out. It is held
onto the panel by means of a brass locknut, tightened down by a 14mm spanner, to a torque
of between 1.0Nm to 2.0Nm to achieve the correct sealing pressure.
A ‘D’ flat is provided to prevent rotation.
Ingress Protection Impact Key
Data Sheet no. 59500
SERIES 59
Miniature Sealed Pushbutton
Technical Information
Product Dimensions
Note: Panel cut out is
applicable for all styles
All dimensions in Millimetres
Circuit Form
NO
FORM X
Application References
• Communications
• Instrumentation
• Data entry
NO
• Military environments
• Environmentally demanding keypads
• Mass transport controls
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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