Hartland Controls' HCT series heavy-duty transformers change one AC voltage to another by magnetic induction, making them useful in a variety of applications.

Hartland Controls' start and run capacitors are internally constructed to meet various HVAC electrical load requirements.‎

Hartland Controls' HCC series contactors are remote controlled/electrically operated switches consisting of contacts that open and close external circuits.

Hartland Controls' relays are electromagnetic switches that are activated by a low power signal or current in one circuit to open or close another circuit.

Hartland Controls' HHS series motor hard start capacitor kits improve HVAC equipment efficiency by eliminating the heat surge that typically occurs at start-up.

Hartland Controls' Basic Relay Terminology Guide

A contactor usually has both moveable and fixed, low resistance contacts which do the actual circuit opening and closing.

Contact bounce is the uncontrolled opening and closing of the contacts due to forces within the relay (internal forces), whereas contact chatter is the uncontrolled opening and closing of contacts due to external forces.

While a failing capacitor is fairly easy to identify visually, an air conditioner will express certain symptoms as the capacitor degrades.

Hartland's industrial controls product catalog.

A transformer is a passive electrical device designed to change one AC voltage to another by magnetic induction.

Capacitors come in many different shapes, sizes and materials. They're used in a wide range of applications, including electronics, appliances, transportation and power grids worldwide.

From everyday applications such as refrigerators and garage doors, to signaling and protecting electrical power systems, relays are in use every second of every day.

Capacitors are attached to motors and constructed to release electrical power in different methods. The energy can either be released instantly to start the motor, or released over a period of time to keep it running.

Power contactors are used in large equipment for motor controls.

Hartland Controls specializes in the design and manufacture of mission critical electrical contactors, class II transformers, capacitors, relays, auxiliary switches and configured assemblies.

DigiKey is an authorized distributor of Littelfuse products for circuit protection, power semiconductors, electromechanical, sensing solutions, and much more.