ICM491
Single Phase Line Monitor
Reliable line voltage protection for single phase systems
7313 William Barry Blvd., North Syracuse, NY 13212
(Phone) 315-233-5266 (Toll Free) 800-365-5525
(Fax) 315-233-5276
www.icmcontrols.com
LII114-1
Protects against High/Low
voltage and rapid system
recycling, 95-270 VAC
operation, adjustable
anti-short cycle timer...
The ICM491 was specically designed
to guard equipment against damage
caused by under/over voltage conditions
and/or rapid system recycling.
DESCRIPTION
• 5-Second Interrogation Delay... helps
prevent nuisance tripping
• LED Indication... normal run and fault
indications
• 95-270 VAC Operation... in a single
model
• Integral Anti-Short Cycle
Protection... “Delay on break” circuit
provides adjustable (.1 to 10 minutes)
lockout delay to prevent rapid system
recycling; no external ASC timers
required
• Meets IEEE 587... A&B for transient
protection
FEATURES
Input
• Line Voltage: 95-135 VAC or 190-270 VAC
(selectable)
• Maximum Operating Input: 142-275 VAC
• Line Frequency: 50-60 Hz
Output
• Type: Relay, energized upon acceptable
conditions
• Form: SPDT, Single Pole, Double Throw
• Ratings: 6A @ 120 VAC resistive
5A @ 240 VAC resistive
Response Times
• Line Dropout: .05 seconds (typical)
• Line Voltage Sag: 5 seconds (typical)
• Turn On (sec): Based on minimum time
selected
Lockout Delay Timer
• Dry Relay Contacts
• Time Delay: Adjusts from 6-600 seconds
(+/- 10%)
Under Voltage Protection
• Voltage Dropout: Setpoint is -12%
• Voltage Pickup: Setpoint is -8%
Over Voltage Protection
• Voltage Dropout: Setpoint +12%
• Voltage Pickup: Setpoint +8%
Environmental
• Operating Temperature: -40°F to +167°F
(-40°C to +75°C)
• Transient Protection: Meets IEEE 587
Standards for Categories A&B without false output
or degradation
– (6Kv 0.5 µs x 100 KHz Ring Wave)
– (6Kv 1.2 x 50 µs Impulse Wave)
Mechanical
• Mounting: Surface mount using (2) #8 screws
• Terminations: .25” male quick-connect
terminals
SPECIFICATIONS
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