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Installation Instructions for
ATEX Series Shock / Vibration Switch
Please read the following instructions before installing. A visual inspection of this product for damage during
shipping is recommended before mounting. It is your responsibility to have a qualified person install the unit and
make sure installation conforms with local codes.
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
Disconnect all electrical power to the machine.
Disable operation of the machine during installation.
Follow all safety recommendations of the machine manufacturer.
Read and follow the installation instructions.
Description
The Murphy shock and vibration switches are available in a variety of models for applications on machinery or
equipment where excessive vibration or shock can damage the equipment or otherwise poses a threat to safe
operation. A set of contacts is held in a latched position through a mechanical latch and magnet mechanism. As
the level of vibration or shock increases an inertia mass exerts force against the latch arm and forces it away from
the magnetic latch causing the latch arm to operate the contacts. Sensitivity is obtained by adjusting the gap
between the magnet and the latch arm plate.
Applications include all types of rotating or reciprocating machinery such as cooling fans, engines, pumps,
compressors, pump jacks etc.
Warranty
A two year limited warranty on materials and workmanship is provided with this Murphy product. Details are
available on request and are packed with each unit.
ATEX Series
•
ATEX Case
•
ATEX Mounting
•
Electrical Connection
•
Contact rating
•
Sensitivity Range
•
Certification Body
•
Standard
•
Execution
GENERAL INFORMATION
WARNING
SPECIFICATIONS
Copperfree cast alloy, IP 55
2 hole bolt pattern
M20 x 1.5
5A @ 125 - 480 VAC;
0.5A @ 125 VDC;
0.25A @ 250 VDC;
2A resistive, 1A inductive @ 0 - 30 VDC.
Manual reset models: 2 SPDT microswitches.
Remote reset models: 1 SPDT microswitch.
0 to 7 g (Depending on mounting position)
KEMA
EN 50014 / 50018
EEx-d-IIC-T6
3
yi5152
th
revision D, 30
April 2004
catalogue section 20
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