Hammond DTS3141A115LG 4,100 BTU/h 115V NEMA 12 Indoor Air Conditioner

The DTS3141A115LG is a compact side-mount air conditioner for indoor NEMA 12 control cabinets powered from a standard 115 V 60 Hz supply. Rated at 4,100 BTU/h (1,200 W) at +95/+95°F (+35/+35°C) and described by the manufacturer as a 4,000 BTU/H light gray unit, it gives panel builders and maintenance teams a closed-loop way to hold electronics at a set temperature in plant-floor enclosures.

Designed for side mounting on any enclosure surface, the unit uses closed loop cooling so clean enclosure air is recirculated without ever mixing with contaminated ambient air, and it keeps maximum clearance between the warm inlet and cold outlet to reduce hot spots. The exterior case is galvanized steel with a powdercoat finish in RAL7035 light gray; an ANSI 61 gray version is available by replacing LG with GY. A hot gas bypass valve prevents evaporator freeze up while minimizing heavy inrush currents.

DTS3141A115LG is rated 115 V 60Hz with an operating range of 103-127 V, consumes 845 W, and draws 7.51 A running and 15 A starting, wired through a terminal block. It carries a 400 g charge of R134a refrigerant, moves 177 CFM internally and 100 CFM externally (unrestricted), and uses a 150 g/m² filter mat. The thermostat, accessible from inside the enclosure, adjusts from +77 to +113°F (+25 to +45°C) with a factory setting of +95°F (+35°C). Rated ambient range is +59°F (+15°C) to +131°F (+55°C), with a noise level of <70 dB(A).

Unit weight is 89 lbs (40 kg) and shipping weight is 95 lbs (43.09 kg). Gasket, mounting kit and template for the enclosure cutout and drilling are included, as are a condensate drain hose and clamp, and a built-in condensate evaporator handles condensate discharge. Self-diagnostics run on startup, faults are shown by LED, and a door contact provision allows power down when the enclosure door is opened. The series carries UL, cUL and CE approvals and maintains the enclosure's NEMA 12 (IP 54) rating. This part is listed as RoHS and REACH compliant.