Ensure optimal defrost cycles and efficient system performance with this Defrost Timer, compatible with Master-Bilt part number 18199 and replacement model 5188A9. Designed for commercial refrigeration, this timer runs on 115V and supports 7.5A resistive / 15A inductive loads, making it ideal for managing compressor and defrost heater operations in display cases, walk-ins, and prep units. Key Features Direct replacement for Master-Bilt 18199 / 5188A9 115V operation for commercial refrigeration systems Rated for 7.5A resistive / 15A inductive loads Controls automatic defrost cycles to prevent frost buildup OEM-compatible design for easy installation and reliable performance Specifications Voltage: 115V AC Resistive Load Rating: 7.5 Amps Inductive Load Rating: 15 Amps Part Numbers: 18199, 5188A9 Application: Defrost control in commercial refrigeration systems Model Type: M175 mechanical timer Compatible Models Model-specific list not provided ? commonly used in Master-Bilt refrigeration units requiring M175 defrost timers Why Choose This Item This defrost timer ensures consistent and accurate defrost scheduling, helping to maintain proper temperatures and extend the life of your refrigeration system. Trusted for high-performance commercial use, it's the ideal OEM-grade solution to reduce service calls and improve system efficiency.