PLM9405
Littelfuse Protection Relays, PLM Series

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PLM9405 Littelfuse Protection Relays, PLM Series, Voltage Monitor, 480V, 3-Ph,
MFG Item Number
PLM9405

PLM9405 Littelfuse Protection Relays, PLM Series, Voltage Monitor, 480V, 3-Ph,

MFG Item Number
PLM9405
Series
More specs

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Description

Protection Relays, PLM Series
Item #
PLM9405
Voltage Monitor, 480V, 3-Ph,

PLM Series Information

  • Protects against phase loss & reversal; & under & unbalanced voltages
  • 8‑pin plug‑in base
  • Adjustable low voltage trip point
  • Factory fixed unbalance & trip delay
  • Line voltages 200 to 480VAC in 3 ranges
  • Isolated, 10A, SPDT output contacts
The PLM Series continuously measures the voltage of each of the three phases. The PLM Series uses a microcontroller circuit design that senses undervoltage, voltage unbalance, phase loss, and phase reversal. Protection is assured when regenerated voltages are present. Both delta and wye systems can be monitored; no connection to neutral is required.

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Specifications

Specifications
Manufacturer Part Number PLM9405
Manufacturer Littelfuse
Product Series PLM
Family Series Littelfuse Protection Relays, PLM Series
Description Voltage Monitor, 480V, 3-Ph, 4pct. Phase Unbalance, 5 Second Trip Delay
Phase 3
Voltage 480 V
Current Rating 10 A
Detection Phase Loss
Voltage Unbalance % 4 %
Time Delay Trip (Sec) 5 s
Type of Display LED Status Indicator
Mounting Plug-In
Approvals CSA, UR
Net Weight 0.255 lbs
Gross Weight 0.335 lbs
Alternatives
PMPU
PMPU
Macromatic Protection Relays, PMP Series
SLU100ASA
SLU100ASA
Diversified Electronics Protection Relays, SLU100 Series