
MATSUSHITA Compressor  Single Phase 115V
Model# DC66C10RBU6 R-134a 60
Voltage Range  . . . . . . . . . 103 Volts to 127 Volts @ 60 Hz
Application  . . . . . . . . . . . . Low Back Pressure
Compressor Cooling . . . .Fan/Static Cooling
Rated Performance Data*
Cond. Temp I* Cond. Temp II*
Capacity  . . . . . . . . . . . . . . 813 Btu/h ±7% 895 Btu/h ±7%
E.E.R.  . . . . . . . . . . . . . . . . . 5.53 Btu/Wh ±7% 6.44 Btu/Wh ±7%
Current  . . . . . . . . . . . . . . . 1.28 Amps 1.21 Amps
Nominal Motor Data
Motor Input . . . . . . . . . . . . . . .147 Watts 139 Watts
Rated Current . . . . . . . . . . . . 1.30 Amps
Type . . . . . . . . . . . . . . . . . . . . RSCR, PTC relay
Locked Rotor  . . . . . . . . . . 10.4 Amps
Start Current  . . . . . . . . . . 18.1 Amps
Coil Resistances Run . . . .3.99 Ohms 
@ 68°F (20°C) Start . . . 4.28 Ohms
*Test Conditions for Performance Specifications
Test Oil . . . . . . . . . . . . . . . . ISO VG 10
Shell Temp . . . . . . . . . . . . . . 150.0°F / 65.0°C
Condensing Temp . . . . . . . . . (I) 130.0°F / 54.4°C
 . . . . . . . . . (II) 105.0°F / 40.6°C
Evaporating Temp . . . . . . . . . -10.0°F / -23.3°C
Ambient Temp . . . . . . . . . . . . 90.0°F / 32.2°C
Gas Superheat . . . . . . . . . . . 90.0°F / 32.2°C
Liquid Sub-Cooling . . . . . . . . 90.0°F / 32.2°C
Electrical Accessories
Overload Protector
Nominal Operating Characteristics
Model Name  4TM757NFBYY 
Manufacturer Texas Instruments
Temperature To . . . . . . . . . . . Open: 248°F ± 9°F / 120°C ± 5°C
Trip Current. . . . . . . . . . . . . . @158°F (70°C) 3.60 Amps ± 7.5%
P.T.C. Starting Device
Nominal Operating Characteristics
Model Name    PTH7M6R8 PTH490D-AS6R8 
Manufacturer  Murata Mfg. Murata Mfg. 
Base resistance
@ 77°F(25°C) ±20% 6.8 6.8 Ohms 
Power Consumption (max) 2.9 3.5 Watts 
Operation time 0.6 to 1.8 1.0 to 2.7 seconds 
Recovery time (max) 60 65 seconds
Run Capacitor 15 µF 180 V (min.)
†Although these accessories are listed by UL/CSA for use with this compressor, 
Matsushita assumes no responsibility whatsoever for these or any other components 
sourced by the refrigeration system manufacturer from third parties.
†
Close: 142°F ± 16°F / 61°C ± 9°C
@77°F (25°C) 10.0 Amps @ 16 sec. max.
Refrigerant Control  . . Capillary Tube
Evaporator
Temp. Range . . . . . . . -31°F to 23°F / -35°C to -5°C
Performance Curves
260 
220 
180 
140 
100
Input Power (W)
60
-40 -30 -20 -10 0 10 20
2.2
1.8
1.4
Current (A)
1.0
0.6
-40 -30 -20 -10 0 10 20
2,000 
1,800 
1,600 
1,400 
1,200 
1,000
800 
600
Capacity (BTU/H)
400 
200
-40 -30 -20 -10 0 10 20
Evaporating Temperature (°F)
110°F 120°F 130°F
9 – Point Data
Evaporating Temp.
Condensing Temp. Rating -30°F -10°F +10°F
130°F Btu/h 376 813 1,458
Watts 94 147 208 
Amps 0.82 1.28 1.80 
E.E.R. 4.00 5.53 7.01
120°F Btu/h 423 850 1,502
Watts 98 145 201 
Amps 0.85 1.26 1.74 
E.E.R. 4.32 5.86 7.47
110°F Btu/h 451 881 1,523
Watts 99 142 191 
Amps 0.86 1.24 1.65 
E.E.R. 4.55 6.20 7.97
Panasonic
®
Panasonic Industrial Company 
Refrigeration Products Department 
Tel: 201 - 392 - 4249 
Fax: 201 - 392 - 4315 Rev#1-5/9
 

MATSUSHITA Compressor Single Phase 115V
MODEL# DC66C10RCU6 R-134a 60Hz   
205.1mm (8.07")
165.1mm (6.50")
~
4 holes
19mm (0.75") DIA
49 mm 
(1.93")
88mm
(3.46")
131.6mm 
(5.18")
101.6mm 
(4.00")
86mm 
(3.39")
Process Tube
91mm
(3.56")
185.4mm DIA 
(7.30")
87mm
(3.43")
111 mm
(4.37")
Suction 
Tube
Discharge 
Tube
B
A
F
12.2mm (0.48")
C
DE
Dimensions*
mm inches
A
 . . . . . . . . . . . . . . . . . . . . . 211.8 . . . . . . . . . . . . . . . . . . .8.34
B
 . . . . . . . . . . . . . . . . . . . . . 84.2 . . . . . . . . . . . . . . . . . . . . 3.31
C
 . . . . . . . . . . . . . . . . . . . . . 127.6 . . . . . . . . . . . . . . . . . . . 5.02
D
 . . . . . . . . . . . . . . . . . . . . . 82.9 . . . . . . . . . . . . . . . . . . . . 3.26
E
 . . . . . . . . . . . . . . . . . . . . . 70.4 . . . . . . . . . . . . . . . . . . . . 2.77
F
 . . . . . . . . . . . . . . . . . . . . . 75.2 . . . . . . . . . . . . . . . . . . . . 2.96
*
All dimensions are for reference only
This document sets forth certain operational parameters and conditions for 
operation of this product. If this product is operated outside of the parameters 
and conditions stated herein, buyer assumes sole and full responsibility and 
shall indemnify seller with respect to all product failures and all consequences 
thereof. Operation of the product outside of the parameters and conditions 
specified herein shall serve to invalidate all seller warranties, if any, with respect 
to the product. This document is for reference only. For specifications, please 
contact Panasonic’s engineering department.
Motor Protector
C
3
S
M
Compressor
Running 
Motor
Capacitor
2
Tubes Tube O.D. Wall Material
Suction . . . . . . . . . .0.393 in. / 10 mm 0.037 in. / 0.95 mm Copper
Process . . . . . . . . . 0.33 in. / 8.3 mm 0.035 in. / 0.9 mm Copper
Discharge . . . . . . . . 0.33 in. / 8.3 mm 0.035 in. / 0.9 mm Copper
U.L. File #  . . . . . . . . . SA 4615
C.S.A. File #’s  . . . . . . LR - 36593
General Data Oil Charge . . 250 cc ± 5 cc / 15.3 cu.in. ± 0.3 cu.in.
Net Weight With Oil . . . . . . . . . . . 22.0 lbs, 10.0 kg
Approved Oils:
FREOL . . α 10, α 10E, α 15, α 15E, α 22, α 22E
ICI . . . . . . . . . . . . . . . . . RL10H, RL15H, RL22H
HENKEL . . . . . . . . . . . . . .ProEco 10S,15S, 22S
Residual Moisture . . . . . . . . . . . . . . . 120 mg max.
Impurities . . . . . . . . . . . . . . . . . . . . . . 10 mg max.
Displacement . . . . . . . . . . . 6.55 cc. / 0.400 cu. in.
Panasonic
®
Panasonic Industrial Company 
Refrigeration Products Department 
Tel: 201 - 392 - 4249 
Fax: 201 - 392 - 4315 Rev#1-5/9