PLMU11
Littelfuse Protection Relays, PLMU Series

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PLMU11 Littelfuse Protection Relays, PLMU Series, Voltage Monitor, 200-480V Universal,

MFG Item Number
PLMU11

PLMU11 Littelfuse Protection Relays, PLMU Series, Voltage Monitor, 200-480V Universal,

MFG Item Number
PLMU11
Series
More specs

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Description

Protection Relays, PLMU Series
Item #
PLMU11
Voltage Monitor, 200-480V Universal,

PLMU Series Information

  • Protects against phase & reversal; & over, under & unbalanced voltages
  • Octal plug‑in
  • Isolated, 10A, SPDT output contacts
  • Operates from 200 to 480VAC
  • LED indicator glows green when voltages are acceptable, red for faults
  • Indicates reverse‑phase wiring
  • Simple 3‑wire connection for delta or wye systems
The PLMU Series continuously measures the voltage of each of the three phases to provide protection for 3‑phase motors and sensitive loads. Its microcontroller senses under and overvoltage, voltage unbalance, phase loss, and phase reversal. Protection is provided even when regenerated voltages are present. Universal voltage operation and standard base connection allows the PLMU to replace hundreds of competitive part numbers.

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Specifications

Specifications
Manufacturer Part Number PLMU11
Manufacturer Littelfuse
Product Series PLMU
Family Series Littelfuse Protection Relays, PLMU Series
Description Voltage Monitor, 200-480V Universal, 2-10pct. Volt Unbalance, 0.25-30Sec Del Loss, Rev, OV, UV, Balance
Phase 3
Voltage 200-480 V
Current Rating 10 A
Hi Pwr (Over Vltg) Trip Yes
Detection Phase Loss
Voltage Unbalance % 2 %
Type of Display LED Status Indicator
Mounting Plug-In
Approvals CSA, UR
Net Weight 0.495 lbs
Gross Weight 0.5625 lbs
Alternatives
PMPU
PMPU
Macromatic Protection Relays, PMP Series