Icm Controls 491C-LF Adjustable Asc Timer 95-270 Vac

Product Description

The ICM CONTROLS 491C-LF is an adjustable anti-short cycle (ASC) timer with built-in high and low voltage protection, designed for use in HVAC refrigeration and air conditioning systems. It operates across a wide input voltage range of 95 to 270 VAC, making it suitable for installations where line voltage may fluctuate. The timer protects compressors from short cycling, which reduces mechanical stress and extends compressor service life. HVAC technicians install this control as a protective relay-style device in residential and light commercial refrigeration or cooling equipment.

The 491C-LF is applied in residential and commercial HVAC systems where compressor protection is required. Its wide voltage operating range makes it adaptable to varying supply conditions in the field. This unit is noted as a replacement for the 491C and 491 series timers and also crosses to OEM reference numbers P251-0092-B and MON00862, making it a direct-fit solution in systems that previously used those components.

Key Features

• Adjustable ASC timer function protects compressors from short-cycle damage
• Wide operating voltage range of 95 to 270 VAC accommodates variable line conditions
• Integrated high and low voltage protection for added system reliability
• Direct replacement for 491C and 491 series timers
• Manufactured in the United States

Compatibility

The 491C-LF replaces the ICM 491C and 491 series ASC timers and is cross-referenced to OEM part numbers P251-0092-B and MON00862.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power to the system before removing the existing timer or making any wiring connections. Verify that supply voltage falls within the 95 to 270 VAC operating range before energizing the control. Follow all applicable local codes and manufacturer wiring diagrams when completing the installation.

Technical Specifications

• Operating Voltage Range: 95-270 VAC
• Timer Type: Adjustable Anti-Short Cycle (ASC)
• Protection Features: High voltage and low voltage protection
• Country of Origin: United States

Standard Information

• Brand: ICM CONTROLS
• Manufacturer Part Number: 491C-LF