Similar to 75495 series, but with sealed electrical components that prevent vapor access to any spark-producing members, both inside and outside the cabinet; no damaging explosion can result from sparking or arcing in electrical wiring, relay, thermostat, switch, or compressor. Listed by Underwriters’ Laboratories for use in Class 1, Groups C and D hazardous locations, and approved for such use by New York City Board of Standards and Appeals, OSHA and the National Fire Protection Assoc. Cabinet is not rated to contain force of explosion. Model 3557 is a convenient undercounter model, without a freezer compartment. Model 3552 is an upright freezer only unit. Model 3551 has a separate door for the freezer compartment. All units for 110V, 60 Hz.
