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Model 365 Vibration Switch
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This unit is no longer available - see the 365A
The Model 365 vibration switch provides maximum
protection for large motors, pumps, compressors, and other rotating
equipment by responding to mechanical malfunctions the instant they occur.
Failing bearings, bent shafts, broken blades, over-speeding and similar
malfunctions cause increased imbalance or high frequency vibration
detectable with the model 365 vibration switch. The
instrument may be wired to actuate an alarm or cause a shutdown before
costly damage occurs. It is designed for maintenance-free service in
permanent installations.
The vibration switch is an acceleration sensitive instrument
that measures the total acceleratory shock present on the machine.
Acceleration is a vibration characteristic of prime importance in cases of
mechanical failure on reciprocating or rotating machinery. Newton's second
law of motion states that the force exerted on a body is equal to its'
mass multiplied by its acceleration: F = MA. Thus the destructive forces
acting on a bearing are directly dependent on the acceleration of the
masses involved at the shaft which is supported by the bearings.
Acceleratory measurements made by the vibration switch are the summation of all the individual
accelerations giving a total destructive force acting on the machine - the
result is positive protection. |
Features & Benefits
• Explosion
Proof- CSA Certified and FM approved. (Most models.)
• Self
Powered- Does not require external power to operate (Except remote
reset.)
•
Acceleration Sensitive- Measures destructive forces.
• Minimum
Maintenance- No moving parts except at trip level.
• Continuous
Protection- No attention required after installation.
• Ease of
Installation- Requires no special training.
• Long Life-
Instrument is rugged and durable-no wear.
• Ease of
Adjustment- Set it and forget it-one adjustment.
• Reset-
Remote electrical or manual at unit.
• AC or DC-
Reset coil options.
• O-Ring
Shaft Seals Standard
Download the full datasheet
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Popular Models - See Data Sheet for Other
Models and Specifications |
365A-A8 |
Robertshaw Model 365-A8 Vibraswitch® Explosion Proof (0-Ring shaft seals
standard)
Class I, Div 1, Groups C & D
Class II, Div. 1, Groups E, F, & G. Range 0-4.5 G. with SPDT (single
pole, double throw load contacts and 120 VAC reset coil |
365A-D8 |
Robertshaw Model 365-D8 Vibraswitch® Explosion Proof (0-Ring shaft seals
standard)
Class I, Div 1, Groups C & D
Class II, Div. 1, Groups E, F, & G. Range 0-4.5 G. with DPDT
(2-gang mounted SPDT load switches and 120 VAC reset coil |
365A-A4 |
Robertshaw Model 365-A4 Vibraswitch® Explosion Proof (0-Ring shaft seals
standard)
Class I, Div 1, Groups C & D
Class II, Div. 1, Groups E, F, & G. Range 0-4.5 G. with SPDT (single
pole, double throw load contacts and 48 VDC reset coil |
365A-A2 |
Robertshaw Model 365-A2 Vibraswitch® Explosion Proof (0-Ring shaft seals
standard)
Class I, Div 1, Groups C & D
Class II, Div. 1, Groups E, F, & G. Range 0-4.5 G. with SPDT (single
pole, double throw load contacts and 24 VDC reset coil |
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