Output wiring – Watlow QPAC User Manual

Page 13

QPAC User's Guide

Chapter 2: Install & Wire

Output Wiring

*1 NOTE: A contactor is
required if a high limit
control is used.
*2 NOTE: A separate
disconnect is required
for the fan(s) if used.

QPAC-33 Power and Load
Wiring for all Units.

Circuit

Breakers

Disconnects

Contactors
If Required

3 factory-

supplied

semiconductor

fuses

Heater

Load

Fan 120VÅ (ac)/20W

L1
L2

Hybrid

∫

WARNING: Shock Hazard
Heatsinks are electrically
Live.

CAUTION:
Check terminals for
tightness before ap-
plying power and then
recheck terminals after
one day of operation.
Loose connections can
damage the SCR.

NOTE:
A circuit breaker is re-
quired in addition to the
semiconductor fuses.
All semiconductor fuses
are mounted on-board
the QPAC models 400 to
1,000. Where third-leg
fusing is selected, addi-
tional space is required.

NOTE:
QPAC models Q01, Q32
and Q33 up to 300A and
575V

(ac) are agency

listed. QPAC models Q01
and Q32 up to 1,000A
and 480V

(ac) are

agency listed. Q33 400
to 1,000A are not agency
listed.

∫

WARNING:
To avoid damage to
property and equipment,
and/or injury or loss of
life, use National Electric
Code (NEC) standard
wiring practices to install
and operate the QPAC.
Failure to do so could
result in damage and/or
injury or death.