Submittal Sheet
9/65
Siemens Industry, Inc.
Industrial Controls Catalog
Siemens / Speedfax Previous folio: 16-49, 10IC 8-49
Applications
ESP200 Solid State Overloads
Designed for a wide variety of applica-
tions. The field selectable Trip Class 5,
10, 20 or 30 can easily be set by 2 DIP
switches. This eliminates the guess
factor of an application requirements
and provides reduced inventory for
multiple applications. The inherent
benefits of the ESP200 ultimately
results in cost savings for the user.
ESP200 has a 4:1 current adjustment
range with a fine adjustment dial
labeled in full load amps. The heaterless
overload minimizes the heat trapped in
the enclosures, reduces cost for ventila-
tion or cooling. Easily accessible Reset
button, provides visible and
audible indications to ensure the tripped
overload is ready to re-start.
Designed to replace thermal, or ESP100
overload relays for any application. It
has the same dimensions and footprint
of the ESP100 overload relays. It can
be directly coupled to the contactors
or remotely mounted. In addition to
the NEMA contactor applications, it
also can be used with other types of
controllers for applications requiring DP
or IEC contactors. As a retrofit for other
brands, it is used with a plate available
for retrofitting competitive products.
958 ESP200 Special Use Solid State
Overloads
This overload is specifically designed for
special applications, to provide excellent
protection of hermetically sealed and
artificially cooled motors that require
ambient insensitive and quick trip
response times. Combined with a series
lockout relay, it provides unsurpassed
protection for hermetically sealed
compressor motors in air conditioning
applications. The combination of high trip
speed, current adjustment, and ease of
installation makes it suitable for these
applications. The trip curves are
customized to provide proper overload
protection for these loads without
causing nuisance tripping.
It has selectable manual or automatic
reset mode, and provides ground fault
selection to protect equipment from
damage in case of a fault.
958L ESP200 Oil Field Solid State
Overloads
Specifically designed for the oil market
and the cycling loads experienced with
these types of pumping applications.
These overload relays provide protec-
tion for standard motors, oil well pump
motors, multi-torque connections, and
ultra-high slip motors.
Rotors can be damaged in less than 15
seconds during motor stall conditions
if electrical power is not removed. To
prevent damage during motor stall, the
958L solid state overload removes the
power in 7 seconds at 250% lock rotor
current. Therefore, the motor casing
and the rotor will be protected from
being damage saving the user money
and time.
b
Ambient Compensated Bimetal
Overloads
— Automatic or manual reset adjustment
— A manual test button is provided
to test the operation of the 3-pole
overload relay control contacts
— w15% nominal trip current adjustment
— Accept either standard Class 20 or
Quick Trip (NEMA Class 10) heater
elements without any other chang-
es or adjustments
— Available with a normally open contact
for an alarm circuit (SPDT) up to 60A
— Compensated bimetal overload
relays provide a constant trip time in
ambient temperatures from –20°F to
r170°F for a given heater rating
b
UL Listed File #E22655 or Component
Recognized
b
CSA Certified File #LR6535
Ambient Compensated Bimetal
Overloads
These thermal type overload relays are
used to protect motors from excessive
heat resulting from sustained motor
overloads, rapid motor cycling and
stalled rotor conditions. Although these
devices function based on thermal
principles they are designed to
compensate for the ambient air
temperature surrounding the overload.
This helps prevent the occurrence of
nuisance tripping when there are high
surrounding ambient temperatures.
The percentage of overload determines
the length of time required to open the
circuit.
ESP200 Solid State Overload 958 or 958L Solid State Overload
Ambient Compensated Bimetal
Single Phase and Three Phase
Overload Relays
Solid State ESP200, Class 48, 958, 958L and Bimetal
General