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Product Detail
Motor Control
3 Phase Monitors
Time Mark Corporation A257BM
Time Mark Corporation A257BM
TIMEMARK A257BM A257BM-480VAC 3PH PM MNL RESET 98083709
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Description:
TIMEMARK A257BM A257BM-480VAC 3PH PM MNL RESET 98083709
UPC:
66291700170
Part Number:
A257BM
Retail Price:
$121.00 / ea
Net Price:
$91.20 / ea
Availability:
Contact us
for availability.
Quantity
ea
Add to Cart
Checkout
Specifications
App Drawing Name
app-257.jpg
CATALOG NUMBER
A257BM
Datasheet Name
Time-Mark-257-3-Phase-Monitor.pdf
Dimension Drawing Name
dim-252.jpg
Manufacturer
Time Mark Corporation
Product Description
TIMEMARK A257BM A257BM-480VAC 3PH PM MNL RESET 98083709
Timemark CATALOG NUMBER
A257BM
Timemark Category
3-Phase-Monitors
Timemark Dimensions
3.52in X 2.44in X 1.75in
Timemark Long Description
The Model 257 continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the Model 257 monitor will detect phase loss on a loaded motor even when regenerated voltage is present.
This device consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de-energize the relay. When the fault is corrected, the monitor will automatically reset (a manual reset version is also available).
The Model 257 does not require a neutral connection and can be used with Wye or Delta systems. Voltage ranges are sufficiently wide to allow for proper adjustment to existing conditions. Both TRIP and NORM condition indicators are provided to aid in adjustment and system trouble-shooting.
Timemark Long Description (NO HTML)
The Model 257 continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the Model 257 monitor will detect phase loss on a loaded motor even when regenerated voltage is present. This device consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de-energize the relay. When the fault is corrected, the monitor will automatically reset (a manual reset version is also available). The Model 257 does not require a neutral connection and can be used with Wye or Delta systems. Voltage ranges are sufficiently wide to allow for proper adjustment to existing conditions. Both TRIP and NORM condition indicators are provided to aid in adjustment and system trouble-shooting.
Timemark MASTER UPC
662917001701
Timemark Max Supply-Voltage
480 VAC
Timemark Min Supply-Voltage
480 VAC
Timemark Model Series
257
Timemark Mounting
8-pin
Timemark Number Of Pins
8
Timemark Output Contacts
SPDT
Timemark Pa 3P Function
Phase Loss/Phase Reversal/Under Voltage Only
Timemark Pa Automatic Reset
No
Timemark Pa Manual-reset
Yes
Timemark Pa Phasesensing
Phase Reversal,Phase Loss
Timemark Pa Trip-restart
No
Timemark Pa Tripdelay
No
Timemark Product Title
3-Phase Monitor
Timemark Rating
CSA and UL
Timemark Short Description
3PH,480V,Loss/Rev,Und V,Man Rst,SPDT
Timemark UNSPSC
39122332
Timemark Voltage
480 VAC
Resources
Timemark Datasheet
Package Information
Timemark Height
3.52
Timemark Length
2.44
Timemark Weight
6 oz
Timemark Width
1.75
Weight
0.0000
Time Zone
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