Iec Frame Dimensions Reference Chart Page 2
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1
2Marathon Electric’s “MAX” Family
of AC Variable Speed Motors
Performance and Specification Comparisons
Year Warranty
microMAX
Black Max
Blue Max
Characteristic
™
®
®
Electrical Characteristics
Horsepower range
1/8-10
1/4-30
1-1250
Base speed (# Poles)
4
4 and 6
2, 4, 6, 8, 10,12
Standard Voltage
230, 230/460, 575
230/460, 575
230/460, 460, 575
Insulation Class
H
F
F (select models are H)
®
®
Insulation System
CR
magnet wire / Class H
MAX GUARD
/ Class F
MAX GUARD
/ Class F or H
200
Service Factor (inverter power)
1.0
1.0
1.0
Phase/Base Frequency
3/60
3/60
3/60
Design Code (NEMA)
A
A
A (“B” as noted)
Duty Cycle
Continuous
Continuous
Continuous
Thermal protection
None
Class F thermostats
Class F thermostats
Mechanical Characteristics
Frame size (mounting)
56-215T
56-286T
143T-6805
Normal NEMA frame size
Yes
Yes
Yes
Enclosure
TENV & TEFC
TENV & EPNV
TENV, TEFC, TEBC,
EPNV, DPFV
Frame material
Rolled Steel
Rolled Steel, Aluminum,
Cast Iron
and Cast Iron
End bracket material
Aluminum
Aluminum, Cast Iron
Cast Iron
Conduit box material
Steel
Steel
Cast Iron
Fan guard material
Polypropylene
None (all ratings TENV)
Cast Iron
Fan material
Polypropylene
None (all ratings TENV)
Polypropylene
Severe Duty option
No
No
Yes
Lead termination
Terminal block (3 lead TENV)
Conduit box
Conduit box
Conduit box (all others)
Standard mounting (stock)
C-Face with Rigid Base and
C-Face with Rigid Base
C-Face with Rigid Base (1-100 HP)
C-Face Round Body
Rigid base (TEFC and over 100 HP)
Drive end shaft slinger
No
No
Yes
Paint
Black (powder-coat or enamel)
Black (powder-coat or enamel)
Blue (powder-coat or enamel)
Bearings
Ball (C3 fit)
Ball (C3 fit)
Ball (C3 fit); 445T-up Roller
Grease
Mobil POLYREX EM
Mobil POLYREX EM
Mobil POLYREX EM
Standard conduit box assembly position
F3
F1, reversible to F2
F1, reversible to F2
(except 56/140 frame steel)
(F3 available on build-up)
Performance Characteristics
Constant Torque speed range
20:1 (TEFC), 1000:1 (TENV)
1000:1 (TENV)
2000:1 (all enclosures)
TEFC: 20:1 on V/H drives
Constant Horsepower speed range
2:1 (90-120 Hz intermittant)
2:1 (90-120 Hz intermittant)
1.5:1-4:1
Temperature rise
B
F
F (TENV & TEFC)
B (TEBC)
Encoder provisions (stock motors)
No
Yes
Yes
High Breakdown Torque
Yes
Yes
Yes
Other Characteristics
Agency listings
UL Recognized, CSA Certified, CE
UL Recognized, CSA Certified, CE
UL Recognized, CSA Certified, CE
Warranty
3 years
3 years
3 years
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