2880 North Plaza Drive • Rapid City, SD 57702
(800) 843-8848 • (605) 348-5580 • FAX (605) 348-5685
http://www.symcominc.com • email: sales@symcominc.com
Features
Bicolor LED indicator
light is green in normal
conditions and red during trip conditions.
Compact design saves
on precious panel
space.
10A @ 240 VAC
General Purpose Relay
can switch most loads.
Microcontroller based
provides better accuracy
and higher reliability
than analog designs.
Transient protected to
meet IEC 1000-4-5:1995
Standards and stand up
under tough conditions.
Model 50R
Single Phase
Voltage Monitor
•
Engineered
Protection
•
Microcontroller
Based
Protects Single-Phase
motors from:
•Low Voltage
•Optional High Voltage
Additional features:
•UL and cUL listed
•5 year Warranty
•Made in USA
•Surface mount with
optional DIN Rail
Mountability
•Optional Manual 2-300
sec. Variable Restart
Delay
•Optional 2-30 sec.
Trip Delay
Model 50R Single Phase Voltage Monitor has a voltage sensing
circuit which constantly monitors the single phase power for a low
voltage condition. Single phase motors on fans, compressors, air
conditioners, heat pumps, well pumps, sump pumps, and small
conveyor motors are all applicable to the Model 50R.
When a harmful condition is detected, the MotorSaver's output relay
is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a
specified amount of time (Restart Delay). The trip delay prevents
nuisance tripping due to rapidly fluctuating power line conditions.
6/02
2880 North Plaza Drive • Rapid City, SD 57702
(800) 843-8848 • (605) 348-5580 • FAX (605) 348-5685
http://www.symcominc.com • email: sales@symcominc.com
6/02
SymCom warrants its microprocessor based products against defects in material or workmanship for a period
of five (5) years from the date of manufacture. All other products manufactured by SymCom shall be warranted
against defects in material and workmanship for a period of two (2) years from the date of manufacture. For
complete information on warranty, liability, terms, returns, and cancellations, please refer to the SymCom
Terms and Conditions of Sale document.
Model 50R
MS50R
Single Phase
Voltage Monitor
LINE VOLTAGE
ADJUST
220208
200
190
(VAC)
GEN. PURPOSE RATING
SymCom, Inc.
L1 L2
190-240 VAC, 1fl, 50/60 HZ
230
240
10 A at 240 VAC
PILOT DUTY RATING
480 VA at 240 VAC
TOP
MODEL 50R
P/N- MS50R - 200
RUN
LIGHT
C
IND. CONT. EQ
U
LISTED
RESTART
DELAY
150
70
2
220
300
MAN
(SECONDS)
Rapid City, SD
IND. CONT. EQ
U
784X
784X
L
L
¤
¤
LISTED
2.900"
(73.66)
Specifications
•
4.030" (102.36)
4.500" (114.30)
Operating Points
•
5.250" (133.35)
Special Options
Specifications Order #
Line Voltage Ranges 50R-100-2
•100 V Model...........................................95 - 120 50R-200-2-9
•200 V Model...........................................190 - 240 50R-200-2
•400 V Model* ...................................... ..380 - 480 50R-200-3
*Comes standard with 470V
Frequency .................................. ....50* or 60 Hz
Low Voltage 50R-400-2
•Trip (% of set point) ..........................................90% 50R-400-3
•Reset (% of set point) ......................................93%
Delay Time (Nominal)
•T
rip ....................................................................2 seconds
•
Restart (low voltage) ........................................2 seconds
•Restart (complete power loss)..........................2 seconds
Output
•Pilot Duty (SPDT) ............................................10 A
•Transient Protection (Internal) ..........................IEC 1000-4-5; 1995 ±6 kv
eight ..............................................................1 lb.
W
Special Options
•Variable Time Delay Restart ............................2 - 300 seconds w/manual reset
•Variable Trip Delay............................................2 - 30 seconds
•Manual Reset....................................................Standard w/Adj. Restart Delay
•
High Voltage Operating Points
Trip (% of Set point)............................110%
Reset (% of Set point) ........................107%
For special operating points, contact the factory.
A@600VAC relay. 50R-200-9
50R-400-2-9
WIRING DIAGRAM FOR MODEL 50R
WITH MOTOR CONTROL
General Purpose
or 480 VA @ 240 VAC
WIRING DIAGRAM FOR MODEL 50R
WITH ALARM CONTROL
SIDE
MS50R
0.150" (3.81)
2.163"
(54.94)
.375"
(9.53)
2.913"
(73.99)
*Note: 50Hz will increase all delay timers by 20%
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