Instruction Manual

∫
1
∫
2
∫
3
4
I
D E
H
G
F
B
C
A
Mounting
Hole/Slot
0.17 (4.3) Dia.
Heatsink:
Black Anodized
Aluminum
Series
R
480 VAC
45A
50/60HZ
SOLID STATE RELAY
SIGNAL
CZR
90-140V
RMS
INPUT
12.7mm (0.5 in) N/A 66.0mm (2.6 in) 81.3mm (3.2 in) 88.9mm (3.5 in) 22.6mm (0.89 in) 12.7mm (0.5 in) 99.0mm (3.9 in) 81.3mm (3.2 in)
25.4mm (1.0 in) 19.1mm (0.75 in) 63.5mm (2.5 in) 76.2mm (3.0 in) 88.9mm (3.5 in) 44.5mm (1.75 in) 22.9mm (0.9 in) 109.2mm (4.3 in) 76.2mm (3.0 in)
A B C D E F G H I
MODEL
18 Amp
24-42 Amp
Unit Dimensions
Output Rating Curves
Wiring
Warnings
WAT-Pos 2/C
Series CZR
Solid State Contactor
User’s Guide
Top
Front
Side
Printed on Recycled Paper
10% Postconsumer Waste
L1
Vı (ac/dc) +
Vı (ac/dc) -
L2
Limit Control
Contacts
(If Required)
Semiconductor
Fuse
240VÅ (ac)
and above
L1
Neutral
Heater
120VÅ (ac)
and 277VÅ (ac)
Output
INPUT
ç Mount cooling fins vertical
Wiring must conform to National Electric Code
(NEC) safety standards, as well as locally applica-
ble codes. Failure to do so could result in death or
personal injury.
Wiring examples show L2 in 240VÅ (ac) or 480Å
(ac) configuration. In 120VÅ (ac) or 277VÅ (ac)
applications, L2 is neutral and must not be fused
or switched. Failure to follow this guideline could
result in death or personal injury.
Installation and service by qualified personnel
only. Failure to do so could result in death or
personal injury.
Hot surface, do not touch heat sink. Failure to fol-
low this guideline could result in personal injury.
1241 Bundy Boulevard, P.O. Box 5580,
Winona, Minnesota USA 55987-5580
Phone: [phone], Fax: [phone]
Internet: http://www.watlow.com
Model number dependent
0600-0037-0000 Rev D WATLOW Series CZR User's Guide
June 2010, North American English
1
Pull to release
from DIN rail
50 68
86
104 122
140
158
176
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
CZ42
CZ24
CZ34
CZ18
Maximum Ambient Temperature ºF
Maximum Ambient Temperature ºC
Current (Amps)