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2E MOTOR PROTECTION RELAYS
MODEL
RC820
L1/R
L2/S L3/T
Load circuit
Toshiba's 2E relay eliminates many motor
failures . This solid state relay features precise
motor protection for any horsepower/voltage
combination in just three ratings . The 2E
provides overload and single phase protection
and has an adjustable setting for very wide
" OVERLOAD & SINGLE-PHASE PROTECTION
Two protective functions are incorporated .
" SOLID-STATE
Fully solid-state circuit provides high reliability and
precise operation .
" MANUAL TEST FEATURE
Manual test switch offers convenience for sequence
testing .
" MANUAL/REMOTE/AUTO RESET
Wide selection of reset mode gives application
flexibility.
range from 3 to 40 sec . (starting characteristic,
at 600% current) to accomodate reduced voltage
start-ups and high inertia loads.
The 2E relay complies with international
standards as well as UL (USA) listed and CSA
(Canada) certified .
Current
setting
circuit
" SURFACE/FLUSH MOUNTING
Selectable surface or flush mounting .
" FLEXIBILITY
The relay allows for a high degree of flexibility for
coordinating with wide range of current and trip time
settings .
" VISIBLE TRIP INDICATOR
LED indicator shows relay trip status clearly until reset .
" INTERNATIONALLY RECOGNIZED
The relay complies with international standards as well
as UL (USA) listed and CSA (Canada) certified .
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I
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Rectifier
circuit
Rectifier
circuit
Amplification
circuit
Smoothing
circuit
Smoothing
circuit
Phase
current
detecting
circuit
Single-
phase
failure level
discrim-
inating
circuit
Timer
circuit
O
Voltage regulating circuit
Operating time
setting circuit
Timer
circuit
Power
supply
circuit
~ I I
Indication/
output
Circuit
b
a
8
9
10
Control
power
supply
Remote
reset
contact
Not used
Output
contacts
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