Littelfuse PLMU11
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Overnight shipping is also available.
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Description
Operation Upon application of power, a 0.6s random start delay begins and the PLMU11 measures the voltage levels and line frequency and selects the voltage range. The output relay is energized and the LED glows green when all voltages are acceptable and the phase sequence is correct. LED flashes green during trip delay, glows red when output de-energizes. undervoltage, overvoltage, and voltage unbalance must be sensed for continuous trip delay before the relay de-energizes. Reenergization is automatic upon fault correction. The output relay will not energize if a fault condition is sensed as 3-phase input voltage is applied. The LED alternately flashes red/green when phase reversal is sensed. Line voltage is selected with the knob, setting the over and under voltage trip points. Voltage range is automatically selected by the microcontroller.PLMU11 - PLMU Series
Littelfuse PLMU11 is now available from Williams Automation.
If you need a specific firmware version or series for this item, please call or email us with your request. We can also provide specifications and/or a data sheet for this item upon request. Please call or email us if you need one.
We offer Overnight shipping for most items listed on our website. Please get in touch with us to confirm whether the product can ship overnight on the day of your order. Cutoff times are typically 2-3 PM EST. Lead times can range from 1 to 4 business days.
Call (803) 761-7027 if you have any questions about availability, or email us at sales@williamsautomation.com.
Specifications
- Dimensions
- 3.03 x 2.39 x 1.78 in. (77.0 x 60.7 x 45.2mm)
- Input AC Line Frequency (Hz)
- 50/60Hz ±2Hz; 200-240VAC: 50/60Hz; 340-420VAC: 50Hz; 400-480VAC: 60Hz
- Input Phase Sequence
- ABC
- Input Tolerance (%)
- ±15%
- Input Type
- 3-phase delta or wye with no connection to neutral
- Input Voltage Maximum (V)
- 552VAC
- Input Voltage (V)
- 200 to 480VAC
- Isolation Voltage (V)
- ≥2500V RMS input to output
- Life
- Mechanical - 1 x 106; Electrical - 1 x 105
- Mounting Method
- Plug-in socket rated 600V
- Operating Temperature
- -40° to 60°C (-40°F to 140°F)
- Output Form
- Isolated SPDT
- Output Load Rating (VA)
- 10A resistive @ 240VAC; 1/4hp @ 125VAC; 1/3hp @ 250VAC; 277VAC max
- Output Type
- Energized when voltages are acceptable
- Overvoltage Reset Voltage (%)
- -2% of the trip voltage
- Overvoltage Trip Voltage (%)
- 109-113% of the adjusted line voltage
- Phase Loss
- ≥15% unbalance
- Random Start Delay
- ≅0.6s
- Reset Time (ms)
- Automatic
- Response Time (ms)
- Phase loss: ≤200ms; Phase reversal: ≤200ms
- Severe Unbalance
- 0.25-2s; disabled when the trip delay is less than 2s
- Storage Temperature (F/C)
- -40° to 85°C (-40°F to 185°F)
- Surge Protection
- IEEE C62.41-1991 Level B
- Termination Type
- Octal 8-pin plug-in
- Trip Delay Range
- Adjustable from 0.25-30s
- Trip Delay Tolerance (%)
- ±15%
- Type of Detection
- Voltage detection with delayed trip and automatic reset
- Undervoltage Reset Voltage (%)
- +2% of the trip voltage
- Undervoltage Trip Voltage
- 88-92% of the adjusted line voltage
- Voltage Unbalance Reset (%)
- Selected unbalance %/Reset %: 2/1.5; 3/2.5; 4/3.5; 5/4.5; 6/5.4; 7/6.3; 8/7.2; 9/8.1; 10/9
- Voltage Unbalance Trip Point (%)
- Adjustable from 2-10%
- Weight (lbs/g)
- ≅8.6oz (244g)
Reviews
What our customers say
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Rating they have quick great service and quick shipping!! would recommend doing business over and over!!
January 7 on 
Great price and speedy delivery. I am certain, based on my first statement that if needed, customer support will be excellent
December 31 on
Great customer service, fast shipping. Nice to deal with a company that shows they care about their customers.
December 5 on
I got the part and it was exactly what i needed to get my dust collector up and running again! It was also at very reasonable price. Thanks!
December 4 on
Another great purchase from Williams Automation. You will have peace of mind knowing your getting authentic parts from Williams Automation. Very easy to work with and great customer service. Plus you get at a competitive price and not three times what it should be.
November 6 on
Exceptional customer service! They had the elusive part I required readily available and responded promptly to all my emails.
November 2 on
Great customer service. Had the hard to find parts I needed in stock. All emails answered promptly.
October 9 on
Had what I needed in stock, shipped fast and arrived within the time frame indicated. It was packaged securely.
August 28 on
Perfect purchase! The whole process was great, including the packaging and shipping. Finally a company who cares!
August 13 on
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