ICM Controls ICM401A Line Voltage Monitor

The ICM401A Line Voltage Monitor ensures reliable protection for 3-phase electrical systems. Operating across a wide 190–600 VAC with a 50/60 Hz frequency, this device uses an SPST relay to guard motors, air conditioners, and generators.

Featuring an auxiliary supply of 18–30 VAC and rapid phase loss protection in less than one second, it keeps critical equipment safe and maintains system uptime. Built for compact installations, the monitor is suitable for a range of industrial and commercial power environments. Engineered for reliability in demanding environments.

Key specifications at a glance:

• Primary function: Line voltage monitoring for 3-phase circuits
• Voltage & frequency: 190–600 VAC, 50/60 Hz
• Output: SPST normally open (NO) relay, 10 A
• Auxiliary supply: 18–30 VAC
• Protection speed: Phase loss protection < 1 second
• Physical: 3.25" L × 3" W × 1.25" H; compact form
• Applications: Motor protection, air conditioners, generators
• Approval: CUL approved