COH Series

COH05A1AC

Lead Time: 10 Days

$131.90 (USD) / EACH

Description Of Function

<p><strong>Overcurrent Sensing</strong><br>After input voltage is applied & the sensing delay on power-up (t<sub>s</sub>) is completed, the unit will begin sensing for a fault condition. A fault will occur when the monitored AC current (I) goes above the Fault Trip Current setting & remains above the Reset level for a period longer than the adjustable time delay period (t). The LED will turn ON immediately and the relay will energize after the time delay on pick-up (t) is completed. The relay will de-energize & the LED will turn OFF when the monitored AC current goes below the Reset level.</p>

Function Chart

Product Overview

Features
  • Detects Overcurrent Only
  • Monitors single phase AC current
  • Three separate adjustable Fault Trip Current ranges covering 0.5 - 50 amperes
  • Built-in toroidal through-hole current transformer allows easy access & multiple loops for increased sensitivity
  • Adjustable time delay on fault trip
  • LED indicates fault condition
  • 10A SPDT output contacts
  • Encapsulated for protection in harsh environments
Enclosure Style

Encapsulated 2.5" x 3.5" enclosure with dual screw mounting

Configuration / Contact Rating
  • SPDT
  • 10 Amperes @ 240VAC, General Purpose; 8 Amperes @ 28VDC, Resistive; 1/4HP @ 120/240VAC; B300
Application Information
  • Voltage Tolerance: AC Operation: +10/-15% of nominal at 50/60 Hz.
  • Load (Burden): 2 VA for all voltages
  • Indicator LEDs: Red ON Steady when Fault occurs
  • Current Sensing:
    Range: 0.5-5A
    Type: Toroidal, through hole wiring
    Setting Accuracy: Min: +0%, -50%; Max: +10%, -0%
    Maximum Allowable Current: Steady-25A Turns; 150A Inrush for 10 Seconds
    Trip Point Hysteresis: -5% Overcurrent sensing +5% Undercurrent sensing
  • Response Times:
    Trip Delay (Relay ON): A: 0.150 - 7 Sec; B: 0.5 - 50 Sec; F: Fixed times i.e., F2 = Fixed 2 Sec
    Sensing Delay on Start-up:C: No Delay, D: 1 Sec, E: 2 Sec, F: 3 Sec, G: 4 Sec, H: 5 Sec, J: 6 Sec
    Time Delay on Reset (Relay OFF): 100ms
    Reset Time: 400ms
  • Output Contacts: 10 Amperes @ 240VAC, General Purpose; 8 Amperes @ 28VDC, Resistive; 1/4HP @ 120/240VAC; B300
  • Life: Mechanical: 10,000,000 operations; Full Load: 100,000 operations
  • Temperature: -28° to 65° C (-18° to 149° F)
Approvals
UL #: E109466

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