Technical data
CAT.201.01.T.E For more information contact Cutler-Hammer at: www.ch.cutler-hammer.com/catalog
33-33
January 2001
NEMA Contactors & Starters
33
Thermal Overload Relays
Freedom Line
Vol. 2, Ref. No. [0049]
Figure 33-19. Class 10 and Class 20 Trip Curves
Technical Data
Table 33-60. Wire (75°C) Sizes — AWG or kcmil — NEMA Sizes 00 – 2,
IEC A – K — Open
1
Two compartment box lug.
Table 33-61. Wire (75°C) Sizes — AWG or kcmil — NEMA Sizes 3 – 8,
IEC L – N — Open
Table 33-62. Power Terminal Torque Line and Load Terminals
Table 33-63. Plugging and Jogging Service Horsepower Ratings
2
2
Maximum horsepower where operation is interrupted more than 5
times per minute or more than 10 times in a 10 minute period. NEMA
standard ICS 2-1993 table 2-4-3.
0
1
2
3
4
5
10
20
30
40
50
100
200
300
400
500
1000
2000
3000
4000
5000
10,000
246810
From
Hot Start
From
Cold Start
Multiples of Current Setting
Trip Time
(Seconds)
Class 10 Overload Relay 25°C Open Rating
0
1
2
3
4
5
10
20
30
40
50
100
200
300
400
500
1000
2000
3000
4000
5000
10,000
246810
From
Hot Start
From
Cold Start
Multiples of Current Setting
Trip Time
(Seconds)
Class 20 Overload Relay 25°C Open Rating
IEC
Size
NEMA
Size
Cu Only
Power Terminals — Line
A, B, C
D, E, F
G, H, J, K
00
0
1
2
12 – 16 Stranded, 12 – 14 Solid
8 – 16 Stranded, 10 – 14 Solid
8 – 14 Stranded or Solid
3 – 14 (Upper) and/or 6 – 14
(Lower) Stranded or Solid
1
Power Terminals — Load — Cu Only (Stranded or Solid)
Catalog
Number
Terminal Wire Size
C306DN3B 32A 14 – 6 AWG
C306GN3B 75A 14 – 2 AWG
Control Terminals — Cu Only
12 – 16 AWG Stranded, 12 – 14 AWG Solid
IEC Size NEMA Size Wire Size
Power Terminals — Line and Load
L
M
N
3
—
—
1/0 – 14 Cu/Al
1/0 – 8 Cu/Al
3/0 – 8 Cu/Al
— 4 Open — 3/0 – 8 Cu
Enclosed — 250 kcmil — 6 Cu/Al
—5
6 – 7
8
750 kcmil — 2 or
(2) 250 kcmil — 3/0 Cu/Al
(2) 750 kcmil — 3/0 Cu/Al
(2) 750 kcmil — 1/0 Cu/Al
Control Terminals — Cu Only
12 – 16 AWG Stranded, 12 – 14 AWG Solid
Terminal Catalog Number Torque in lb-in
32A C306DT3B 20
75A C306GT3B 35 (14 – 10 AWG)
40 (8 AWG)
45 (6 – 4 AWG)
50 (3 – 2 AWG)
105A C306KN3 (Socket Head Screw)
120 (3/16)
200 (1/4)
250 (5/16)
144A C306NN3 (Socket Head Screw)
120 (3/16)
200 (1/4)
250 (5/16)
(Slotted Head Screw)
35 (14 – 10 AWG)
40 (8 AWG)
45 (6 – 4 AWG)
50 (3 – 1/0 AWG)
NEMA Size 200V 230V 460V 575V
00
0
1
2
3
4
5
6
—
1-1/2
3
7-1/2
15
25
60
125
1/2
1-1/2
3
10
20
30
75
150
1/2
2
5
15
30
60
150
300
1/2
2
5
15
30
60
150
300
Tab3301.fm Page 33 Monday, October 23, 2000 9:49 PM