Load protection installation – APC VS 50 User Manual

Page 15

Magnum VS –48 Vdc User’s Manual

Page 10

3.7. Load Protection Installation

Circuit Breaker Installation

Standard circuit breaker output boards are available with two 30-A breakers or one 60-A
breaker. Output boards are installed at the factory and are generally not field replaceable units.
Contact APC if the output configuration is not suitable for your needs. Other breaker sizes are
not readily available.

GMT Fuse Installation

Fuse holders that accommodate GMT fuses are located on the front panel on the left side of the
unit. Insert the fuse in the holder; observing the tripped indicator is correctly oriented. Use the
chart shown in Figure 3.7-1 to help determine what size fuses will carry the desired current.
When using several of the larger GMT fuses in one shelf, better heat dissipation will be
achieved if the fuses are spaced out evenly within the output panel. A list of GMT type fuses
available from APC is provided in Figure 3.7-3.

AMBIENT TEMPERATURE

7.5 A

5 A

4.5 A

4 A

10 A

7 A

6 A

5 A

FUSE

SIZE

15 A

10 A

9 A

8 A

Figure 3.7-1 GMT Fuse Temperature De-rating Chart

GMT Fuses

FUSE RATING

PART NUMBER

FUSE RATING

PART NUMBER

¼ A

FFA-0030

3 A

FFA-0036

½ A

FFA-0031

5 A

FFA-0037

3/4 A

FFA-0032

7½ A

FFA-0029

1 A

FFA-0033

10 A

FFA-0038

1¼ A

FFA-0039

15 A

FFA-0040

1½ A

FFA-0035

Figure 3.7-3 GMT fuses available from APC

This manual is related to the following products:

VS 100