HOW TO READ A MODEL NUMBER:
Each Marathon Electric motor carries a model number that can be used to define some of the motor's physical and electrical characteristics.
Example (For Fractional): 1PC48C17D2000AP
This is a breakdown of the model on the nameplate:
1 P C 48 C 17 D 2000 A P
1 2 3 4 5 6 7 10 11 12
This is a breakdown of the model in the catalog:
48 C 17 D 2000
4 5 6 7 10
Example (For Integral): 2QA215TBDRA7076ALL
This is a breakdown of the model on the nameplate:
2 Q A 215T B D R A 7076 AL L
1 2 3 4 5 7 8 9 10 11 12
This is a breakdown of the model in the catalog:
215T B D R A 7076
4 5 7 8 9 10
1. Date Code - Year of Manufacture (Not shown in catalog listings.)
2. Thermal Protection:
UL Recognized |
UL Recognized |
|
Automatic Reset |
Automatic |
Automatic Reset |
Q |
Yes |
Yes |
S |
No |
No |
U |
No |
Yes |
W |
# |
Yes |
Manual Reset |
Manual Reset |
Manual Reset |
P |
Yes |
Yes |
Z |
No |
Yes |
X |
No |
No |
None |
None |
None |
V |
No |
Yes |
# Motor protector combination is U.L. recognized only if motor is used in direct drive fan duty application, and is under locked rotor condition, or is running under no-load condition.
3. Date Code - Month of Manufacturer (Not shown in catalog listings.)
4. NEMA Frame Size - (Integral motors - T and U designate standard shaft, TS and US designate short shaft, V designates vertical hollow shaft.)
5. Electrical Type:
Single Phase:
A = Permanent split capacitor
B = Capacitor start, capacitor run
C = Capacitor start, induction run
N = Split phase start, capacitor run
S = Split phase
Three Phase:
T = Three phase
H = Inverter Duty/IEEE841 Inverter Duty Capable
V = Medium Voltage
6. RPM or Speed at 60 Hz (Fractional Only):
34 = 2-Pole, 3600 rpm
17 = 4-Pole, 1800 rpm
11 = 6-Pole, 1200 rpm
8 = 8-Pole, 900 rpm
7. Enclosure:
D = Dripproof
E = Explosion proof, non-ventilated
F = Totally enclosed, fan cooled
G = Explosion proof, fan cooled
O = Open
P = Partial
S = Semi-enclosed
T = Totally enclosed, non-ventilated
8. Frame Construction (Integral Only):
L = Aluminum (Full Frame)
Y = Aluminum (Redesign - Full Frame)
Z = Aluminum (Redesign - High Mount Down Frame)
H = Aluminum - Sourced
R = Rolled Steel (Full Frame)
W = Rolled Steel (Redesign - Full Frame)
X = Rolled Steel (Redesign - High Mount Down Frame)
B = Rolled Steel - Sourced
S = Cast Iron (Full Frame)
N = Cast Iron (Redesign - Full Frame)
P = Cast Iron (Redesign - High Mount Down Frame)
C = Cast Iron - Sourced
9. Style Letter
10. Sequence Number - Last 3 Digits (Integral Only)
001-025 = 2-Pole, 3600 rpm
026-075 = 4-Pole, 1800 rpm
076-100 = 6-Pole, 1200 rpm
101-125 = 8-Pole, 900 rpm
11. Minor Modification Letter(s): Fractional - 1 letter; Integral - 2 letters
12. Manufacturing Code