Specification

L482A Low Limit

Controller

74-3935

SPECIFICATION DATA

RC38

GENERAL

The L482A Low Limit Controller provides temperature or limit

control of air conditioning systems by operating electric

motors for dampers, valves, compressors, or fans. It

responds to the lowest temperature to which any one-foot

portion of the 20-foot, temperature-sensitive element is

exposed. It can be used to close electrically operated

dampers, open electrically operated valves or to shut off

compressor or fan motors when the element senses

temperatures below a critical point. The L482A can also act

as a frost alarm sensor in storehouses or other locations

where low temperatures would damage building contents.

FEATURES

• Mounts horizontally or vertically on a wall or panel, or

directly on sheet metal duct

• Manual reset

• Two spst switches

DESCRIPTION

The L482A Low Limit Controller provides temperature or limit

control of air conditioning systems by operating electric

motors for dampers, valves, compressors, or fans.

PAGE 1
L482A Low Limit Controller SPECIFICATION DATA FEATURES • Mounts horizontally or vertically on a wall or panel, or directly on sheet metal duct • Manual reset • Two spst switches RC38 GENERAL The L482A Low Limit Controller provides temperature or limit control of air conditioning systems by operating electric motors for dampers, valves, compressors, or fans. It responds to the lowest temperature to which any one-foot portion of the 20-foot, temperature-sensitive element is exposed.
PAGE 2
L482A LOW LIMIT CONTROLLER SPECIFICATIONS Model: ❑ L482A Low Limit Controller with two spst snap switches Switching Action: Main switch (M2) opens on a drop to setpoint; auxiliary switch (M1) closes. Manually reset. Temperature Setpoint Range: 15 to 55F (-9 to 13C), stop limits minimum to 34F (2C) Sensing Means: 20 ft (6.1m) sensing element. Controller operates at coldest one-foot portion of element.