M E T A L
SNAP ACTION
CUSTOM ASSEMBLIES
Series 57
M
PUSH BUTTON
SEALED
ROCKER
I N D I C AT O R
SLIDE
VA N D A L R E S I S TA N T
I L L U M I N AT E D
ACTIVE TOUCH
Flex-Tech Miniature Panel Sealed
Metal Pushbutton Switches
The 57M is a miniature, rugged vandal resistant switch. The housing is zinc alloy
with velour chrome plating. It is available as maintained or momentary action and
illuminated and non-illuminated versions. Electro-mechanical operation with Gold
plated contacts and solder terminals. It is ideal for a multitude of applications.
Key Features
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Typical Applications
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Zinc alloy/velour chrome plated
Centre spot LED and non lighted
versions
Momentary or maintained action
Panel sealed to IP67
ROHS compliant
Electro-mechanical
Gold plated contacts and terminals
Security equipment
Industrial control
Medical equipment
Military equipment
Food processing
Transportation
Computers
Standards / Agency / Ratings
Patent # 6,965,085
Series 57
M
Flex-Tech
Miniature
Panel Sealed
Metal
Pushbutton
Mechanical/Electrical
Characteristics:
Circuit
SPST-NO-DB
Button travel (nominal)
2.3mm
Life (mechanical):
500,000 cycles max (momentary)
100,000 cycles max (maintained)
Operating force (nominal)
3N/306g
Contact bounce (nominal)
1 ms
Panel thickness
0.5 - 3mm
Temperature (operating)
-40°C to +85°C
Torque (max) (Fixing Nut)
1-2 Newtons Metre
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Ø18.5
Ø12.4
Button
22.1
19.3
3.5
5.59
0.51 (2)
2.8 (2)
O
Housing
- +
G
Ø3.5
Centre Spot
Illumination
Button
22.1
19.3
Switch
Terminals
LED
Terminals
G
Positive (+)
Lamp Terminal
O
+
-
2 0.5
3.7
Hex Nut
Sealing Washer
M16 x 1-6g Thread
Negative (-)
Lamp Terminal
Panel mounting and construction information
The series 57M mounts easily into panels of minimum 0.5 mm and maximum 3 mm thickness. Front panel sealing to IP67 is
achieved by a sealing washer fitted to 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 hex nut tightened down to a torque of 1-2 Newton Metre to achieve the correct
sealing pressure
.
Ordering Information
Switch
Function
1.
Mechanical, Momentary, Solder terminal
2.
Mechanical, Maintained, Solder terminal
9.
Special, Following digits are in serial order
Housing
Material
1.
Zinc alloy, velour
chrome plated
2.
Zinc alloy, black
chrome plated
Illumination
0.
Non-illuminated
1.
Centre spot illumination
LED Colour
N.
None
G.
Green LED
R.
Green LED
A.
Amber LED
B.
Blue LED
W.
White LED
Electro-mechanical
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Current ratings
10mA, 12 VDC Res.*
Dielectric strength
1,000 VAC
Insulation resistance
1G OHM
Contact resistance
50m OHMS max (initial)
*Current limiting resistor is required
to limit LED forward current to 20 mA
(not included)
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57M-
ITW Switches Limited
Norway Road, Portsmouth, Hampshire PO3 5HT United Kingdom
Tel: 023 9265 6200 Fax: 023 9266 6352
Email: info@itwswitches.co.uk
www.itwswitches.co.uk
DBD/3M/2.08
Power technology
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