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Eaton Cutler-Hammer Series C Circuit Breakers EHD3040

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EHD3040

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The EHD3040 part from Eaton Cutler-Hammer is a molded-case circuit breaker suitable for various applications. Designed for a maximum AC voltage of 480 VAC and a DC voltage rating of 250 VDC, it operates effectively within industrial environments.

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Technical specifications for EHD3040

ManufacturerEaton Cutler-Hammer
Product TypeMolded-case circuit breaker
Product LineSeries C Circuit Breakers
Part NumberEHD3040
Weight4.38 lbs (1.98 kg)
UPC786679317129
AC Voltage Rating480 VAC max
DC Voltage Rating250 VDC max
Interrupting Rating14 kAIC @ 480 VAC
Trip TechnologyThermal-magnetic
Number of Poles3 poles
Continuous Current Rating40 A
Trip SettingFixed
Frame SizeNEMA F-Frame
Mounting StyleFixed panel mount
Line / Load StyleCable-in / cable-out
Terminals IncludedLoad lugs only
Frequency Rating50/60 Hz
System PhaseThree-phase

The Eaton Cutler-Hammer EHD3040 represents a durable molded-case circuit breaker designed for reliable circuit protection. This unit operates at a maximum AC voltage of 480 VAC and accommodates DC applications up to 250 VDC. It is built to provide reliable functionality through its thermal-magnetic trip technology while achieving an interrupting rating of 14 kAIC at 480 VAC, ensuring effective containment of fault conditions.

With a continuous current rating of 40 amperes, the EHD3040 is equipped to handle significant loads in a three-phase configuration thanks to its three-pole setup. This breaker features a fixed trip setting, contributing to its straightforward operational profile. Its frame complies with the NEMA F-frame dimensions ensuring compatibility in installations where this type of framing is standard.

For mounting, the EHD3040 uses a fixed panel style that allows it to be securely set in place within control panels or cabinets. The design employs a cable-in and cable-out layout for its terminals. This configuration includes load lugs exclusively, making installation and maintenance efficient while reducing complexity. The EHD3040 operates effectively across frequency ratings of 50 Hz and 60 Hz, making it versatile for various industrial power systems.