The LSRX/LSRX-C series is designed to energize the output contact whenever 4.5 Amps or greater is present. Used commonly as an ac current proof relay to indicate if a motor is operating.

• Self-powered
• Quick-connect terminals reduce installation time
• Built-in current sensor eliminates the need for a stand alone current transformer

Varies the effective resistance of its output in direct proportion to the current flowing in the conductor it is monitoring.

• Monitors 0 to 20 A
• Loop powered from 10 to 30 V dc
• Linear output from 4 to 20 mA

Positioned at the power distribution or branch circuit location, it safeguards components from power fluctuations or surges by limiting the fault current to a load or the unit being protected to prevent equipment damage or downtime.

• Capability to clamp and withstand high-energy transients to prevent disruption, downtime, and degradation or damage to equipment
• Thermal protection to eliminate catastrophic failure
• UL Recognized and IEC Compliant in one part number to reduce inventory and support global usage
• DIN-rail mounted and compact footprint to increase panel design flexibility

The NEMA-style SPDN series for external panel mount provides equipment protection from transient overvoltage events lasting micro-seconds.

• More direct modes of protection in a smaller package to increase protection and design flexibility
• Capability to clamp and withstand high-energy transients ensures low-residual voltage during high-energy surge events and higher nominal discharge current to prevent disruption or damage
• Thermally protected MOV eliminates catastrophic failure
• Installs on the load side of the circuit breaker to simply maintenance without impacting the other parts of the electrical system

Used to delay the blower from turning on, in a heating/cooling system, to allow time for the system to reach temperature before forcing air through the ventilation ducts. Also used to stagger start for multiple compressors within a facility, on start up or after a power outage.

• Universal ac/dc operating voltage
• Two terminal series connection with the load
• Solid state prevents arc and wear over time
• Encapsulated to protect against shock vibration

Used to delay the blower from turning off, in a heating/cooling system, after the demand has been met to allow all of the conditioned air to be forced out of the ventilation ducts.

• 24 to 120 V ac input voltage
• User selectable time delay
• Solid state prevents arc and wear over time
• Encapsulated to protect against shock vibration

The CT series timers combine a delay-on-make and delay-on-break time delay into one unit and may be used to control fan delays in heating and/or cooling equipment.

• Delay-on-make and delay-on-break in one unit
• Voltage 24 V ac input voltage
• Solid state prevents arc and wear over time
• Encapsulated to protect against shock vibration

A multifunction universal time-delay relay. Six timing functions include delay-on-make, interval, single shot, recycling (ON time first, equal recycle delays), delay-on-break, and retriggerable single shot.

• Universal input voltage
• Knob adjustable time delay
• LED indicators provide visual indication of input voltage and relay status

Littelfuse UL fuses protect your system from overload and short circuit. Littelfuse fuses are chosen over breakers due to their higher amperages, quicker response time, easy coordination, and no calibration required.

• Compact design is ideal for space saving protection
• High-interrupting capacity and excellent current-limitation

Littelfuse UL fuses protect your system from overload and short circuit. Littelfuse fuses are chosen over breakers due to their higher amperages, quicker response time, easy coordination, and no calibration required.

• High short-circuit current rating
• Dual-element design
• Available with and without indication

Littelfuse UL fuses protect your system from overload and short circuit. Littelfuse fuses are chosen over breakers due to their higher amperages, quicker response time, easy coordination, and no calibration required.

• Extremely current-limiting
• 200 kA interrupting rating

Littelfuse UL fuses protect your system from overload and short circuit. Littelfuse fuses are chosen over breakers due to their higher amperages, quicker response time, easy coordination, and no calibration required.

• Superior time-delay and cycling characteristics
• Available with and without indication

Cost-effective, predictable temperature sensor that enables tighter operating control and diagnostics to achieve energy savings and optimal performance of systems.

• Exponential resistance-temperature curve
• Wide operating temperature ranges from -50° C to 300° C
• Metal oxide ceramic compounds

Robust, extremely stable and predictable temperature sensor suitable for a wide range of temperatures that enables tighter operating control and diagnostics to achieve energy savings and optimal performance of systems.

• Nearly linear resistance-temperature curve provides ease and consistency of measurement
• Extremely wide temperature ranges, specifically on the higher end, from -50° C to well above 500° C
• Precious metal (typically Pt) on ceramic substrate

Acting as an on/off switch controlled by thermostats, contactors are designed with consistent silver thickness for increased product life, making them ideal for the demands of commercial and residential HVAC applications.

• Termination options include combo screw, screw w with pressure plate, or lug
• Universal mounting configuration
• Four adjustment pots provide versatility for a variety of applications
• Optional auxiliary switches that attached to the contactor on 3P & 4P

Used in single phase motor applications when there is a need for improved torque and efficiency, run capacitors provide a phase shift to the secondary winding of the motor thereby increasing the torque and power factor.

• Single and dual rated values
• Round or oval case options
• Aluminum oil filled construction
• Designed & manufactured in accordance with UL 810 and EIA standard RS-456
• Custom configurations available

Used to improve the starting torque of single-phase electric motors, each hard start kit consists of a start capacitor and a switching mechanism. The start capacitor increases the current through the start winding of the motor and is eventually removed by the switching mechanism once the motor reaches an optimum speed.

• Use on 1/2 to 10 HP Single Phase HVAC Compressor or Refrigeration Unit (HHS 5 and 6)
• Use on 1 to 4 HP HVAC Compressor or Refrigeration Unit (HHS 7 and 8)
• Easy 5-wire (HSS 410 and 810) or 2-wire (HHS 5, 6, 7 and 8) installations
• RU File No. E223408

Engineered to run more efficiency, our transformer line consists of power ratings up to 250 VA with a variety of primary and secondary voltages to 575 V ac and frequencies at 50 and 60 Hertz.

• Provided in three different versions: Class 2 Transformer, General Purpose Transformer, and Autotransformer
• Termination options include quick connects and lead.
• Various mounting options available
• UL/CUL recognized 5085

Ideal for HVAC applications, general- purpose relays are actuated with an electro- magnetic current, creating a closed circuit. Available as a single pole or double pole unit, these relays can be provided in various contact forms with power or pilot duty ratings

• Double make / double break contacts (HCR-5)
• Single make / single make contacts (HCR-6)
• 250" (6.35 mm) quick connect terminals
• Multi-positional mounting options
• Dual coil terminals (HCR-6)
• RU, cRU File No. E227250