Cutler Hammer, Div of Eaton Corp C440 Sales Brochure

C440 Electronic Overload Relay

Reliable, Accurate, Intelligent
Motor Protection

Increased Flexibility,
Enhanced Protection

Motor failure has the potential to cause production
downtime, costly repair bills, and numerous safety concerns
for plant personnel. For these reasons, motor protection
should be a key element in protecting your organization’s
most valuable assets. Selecting accurate and reliable motor
overload protection is the best way to manage your costs
and maintain system integrity. The C440 and XT electronic
overload relays from Eaton provide reliable, accurate
and value driven protection—including communications
capabilities, in a single compact device.

Flexible design

Simplified selection,
installation and maintenance.

Predictive indication

Status LED provides visual
notification of impending trip.

Enhanced protection
& monitoring

Electronic design provides
improved capabilities versus
thermal overload relays.

Just two frame sizes cover
applications up to 100 amps.

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EATON CORPORATION C440 Electronic Overload Relay

Flexible Design

The electronic design of Eaton’s new C440 Electronic
Overload Relay delivers enhanced motor protection based
on the ability to directly monitor motor current in each
phase. Thermal modeling is performed electronically
with precision solid-state components. The electronics
accurately identify excessive current or phase loss and
react to the condition with greater speed, reliability and
repeatability than a traditional electromechanical device.

Adjustable trip classes (IEC Class
10A; NEMA Class 10, 20 and 30).
Ground fault versions have only
NEMA Class 10 and 20.

Widest full load amps (FLA)
adjustment in the industr y (5:1).

Selectable (ON/OFF) phase
and ground fault protection.

Electronic remote reset/
communication modules
for easy competitive retrofit.

How Do You Know Your Overload Is Working?

Single blink: Normal operation
Double blink: Fault condition developing

Predictive Indication

The C440 and XT Electronic
Overload Relays are designed
to provide enhanced protection
over competitive models. Traditional
self-powered electronic overload
relays rely on internal component
integrity to operate properly. If one
of these components should fail,
most relays would not provide any
operational indication. This could
leave a motor unprotected.

EATON CORPORATION C440 Electronic Overload Relay

Relying on this passive approach
could result in significant equipment
damage and downtime. The C440
provides predictive indication via an
LED indicator. At a glance, you can
determine the status of the overload
as well as an impending trip to
provide enhanced protection of your
most important assets.

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