Control_Flippingbook_October 2023
1-43
NEMA FULL VOLTAGE POWER DEVICES, CONTROL SECTION 1
— CR307 magnetic starters Nonreversing, combination, thermal magnetic circuit breaker type
Part number configuration Valid for NEMA sizes 0-2, type 1 standard enclosure
— Step 4 (digit 12) select overload relay
Overload relay
Code
Thermal bi-metallic ambient compensated (1NC) Thermal bi-metallic ambient compensated (1NO–1NC)
3 4
Solid state overload (1NO–1NC)
(#)
(#) Select code for solid state overload amp rating from standard or optional ranges table below.
— Optional ranges
— Solid state overload relay — standard range
NEMA size
200–208 V
230–240 V
460–480 V
575–600 V
OL amp range
0 and 1
2
NEMA size OL range
Max Hp
Code Max Hp
Code Max Hp
Code Max Hp
Code
0.4–0.85 0.8–1.7 1.6–3.4 3.2–6.8 6.5–13.5 13–27 25–50 17–35 35–70 65–135
C D E F G H
– – – –
0
0.8–1.7 1.6–3.4 3.2–6.8 6.5–13.5 6.5–13.5
–
–
–
–
3/4
D E
1 2 5
D E
1 ⁄
E F G
3 ⁄
E F G
2 3 5
2
4
1 3
2 3
F
F –
G G H H
–
G H
7 1 ⁄
10
G
1
–
–
–
–
2
13–27 13–27 25–50
7 1 ⁄
H
7
1 ⁄
H
10 20 25
–
–
2
2
– – – –
J – – –
2
–
– J
–
25
H
10
15
J
J
–
–
— Step 7 (digit 15) select push button/selector switch
— Step 6 (digit 14) select monitoring options
— Step 5 (digit 13) select auxiliary contacts
Device None 2
Code
Aux contacts
Code
Push button/selector switch — heavy duty
Code
A
None
A B C D E F G H
None
A
1NO 1NC
Start/stop push button
J
2 Phase failure relay is not available for CR307 series standard enclosures. If this is required for your application, use CR407 series oversized enclosure. See page 1-45.
H and-off-auto (HOA) selector switch
L
1NO–1NC
Off-on selector switch
M
2NO 2NC
HOA SS and start push button
S
Keyed HOA SS, key removal center pos.
N
2NO–1NC 1NO–2NC
3NO 3NC 4NO 4NC
J
K
L 1
M 1 N 1
2NO–2NC 3NO–1NC 1NO–3NC
P 1
R 1 1 Exceeds maximum number of contacts for some pilot light selections. See step 8 (digit 16) table, page 1-44.
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