Control_Flippingbook_NOV 2024

NEMA FULL VOLTAGE POWER DEVICES, CONTROL SECTION 1

1-22

— Open/enclosed non-combination magnetic starters CR306 non-reversing with solid-state overload relay

Full load current selection table For continuous rated motors, with a service factor of 1.15 to 1.25, select the heater with maximum motor amperes equal to or immediately greater than the motor full-load current (provides a maximum of 125% protection). For continuous rated motors with no service factor, multiply the full-load current of the motor by 0.90 and use this value to select the heater.

Overload range for solid-state starters

NEMA size

Fuse max.

Breaker max.

Insert digit in ordering code

0.4–0.85 0.8–1.7 1.6–3.4 3.2–6.8 6.5–13.5 6.5–13.5 13–27 25–50 17–35 35–70 65–135 65–135 130–270 130–270 260–540 35–70 13–27

00–1 00–1 00–1 00–1 00–1 00–1

3 6

15 15 15 25 50

C D E F G H G H

12 25 50

100

100

2 2 2

50

50

100 200 125 250 500

100 200 125 250 400 400 800 800 800 –

J

3 and 4 3 and 4 3 and 4

K L

M N

5 5 5 6 6

–

500 600

P

Q

1200 1200

S T

Please reference the NEMA full voltage power devices catalog for additional technical data, selection and installation guides, and dimensional drawings.