PROTECT your brand reputation by including current-limiting fuses,
surge protective devices, and motor protection relays.
CONTROL loads and
increase system efficiency with time delay, current monitoring and mechanical relays, contactors, capacitors, and transformers.
Arc-flash relays protect your equipment and people while also reducing downtime in the case of an arc flash.
Enable easy fuse installation and replacement with our extensive line of fuse blocks, fuse holders, and fuse accessories.
Fuse Blocks & Holders
Littelfuse UL Class fuses offer quality overcurrent protection for all kinds of HVAC load conditions.
UL Class Fuses
Integrated touch-safe covers provide protection against accidental shorting between poles caused by loose wires, tools, or other conductive material.
Power Distribution Blocks
Prevent motors from running
with no load applied and provide protection due to blown fuses, broken wires, or worn contacts.
Voltage & Phase Monitors
Littelfuse UL Listed CC/CD fuses offer extreme current-limitation in a space-saving design and are available up to 60 A.
Class CC Fuses
Enhanced overload relays combine voltage and phase protection with underload and overload protection for motors.
Enhanced Overload Relays
Surge protective devices (SPDs) provide equipment protection from transient overvoltage events lasting micro-seconds.
Surge Protective Devices
more accurately and reduce cycle time with customized easy-to-install RTDs, and reed and temperature sensors.
Littelfuse offers aluminum probe housings engineered for a wide range of HVAC temperature sensing applications. Customized solutions tailored for your needs are available by request.
Temperature Sensors with
Negative temperature coefficient (NTC) thermistor pipe sensors are ideal for measuring temperature
on pipe surfaces, enabling better control of heating/cooling functions to drive energy efficiency.
NTC Thermistor Pipe Temperature Sensors
Littelfuse offers a wide variety reed sensors for a wide range of HVAC temperature sensing applications. Customized solutions tailored for your needs are available by request.
Littelfuse monitoring relays provide over and under current sensing with adjustable trip delays.
Current Monitoring Relays
We offer a broad range of heavy-duty transformers featuring primary and secondary voltages
between 20 to 500 VA.
Engineered to boost the current
or reduce the power factor to an electrical motor, run capacitors
are used in single phase motor applications when there is a
need for improved torque and efficiency.
Available in 1 & 2, 3 & 4, and 4 Pole configurations, we offer a range of contactors for both commercial and resident HVAC applications.
Protect HVAC/R equipment from damage caused by rapid cycling of compressors.
Time Delay Relays
Ideal for HVAC applications, general-purpose relays are available in industry standard sizes.