Solid State Relays
Industrial, 3-Phase ZS
Type RZ3A
Product Description
A Solid State Relay family
designed to switch various
loads such as heating ele-
ments, motors and transform-
ers. The relay is capable of
switching high voltages up to
600
varistor secures transient pro-
tection for heavy industrial
applications.
For higher reliability and load
cycle capability three semi-
conductor power units are sol-
dered directly on to the direct
Type Selection
Switching
mode
A: Zero Switching
Selection Guide
Rated operational Control
voltage
400 VACrms
480 VACrms
600 VACrms
Notes
Over-temperature protection and alarm output: add suffix P to include over-temperature protection and alarm output.
Example: RZ3A60D75P. Not available with “LD” type control.
Isolation
Rated isolation voltage
Input to output
Output to case
VACrms.
The
Rated operational
voltage
40: 400 VACrms
48: 480 VACrms
60: 600 VACrms
voltage
5 VDC
4-32 VDC
24-275 VAC/24-50 VDC
5 VDC
4-32 VDC
24-275 VAC/24-50 VDC
5 VDC
4-32 VDC
24-275 VAC/24-50 VDC
built-in
copper bonded (DCB) sub-
strate.
AC- or DC-controlled versions
are available. Built-in LED sta-
tus indication for applied con-
trol voltage and over-tempera-
ture alarm (optional). A version
that can be controlled with 5
VDC @ 15 mA (max) is also
available (LD).
The series covers a range of
load
AACrms.
4000 VACrms
4000 VACrms
currents
Rated operational
current
25: 3 x 25 AACrms
55: 3 x 55 AACrms
75: 3 x 75 AACrms
up
to
Rated operational current
3 x 25 A
RZ3A40LD25
RZ3A40D25
RZ3A40A25
RZ3A48LD25
RZ3A48D25
RZ3A48A25
RZ3A60LD25
RZ3A60D25
RZ3A60A25
75
Thermal Specifications
Operating temperature
Storage temperature
Junction temperature
• 3-phase Solid State Relay
• Zero switching
• Rated operational current: 3 x 25, 55 or 75 A
• Rated operational voltage: Up to 600 VAC
• Control voltage 5 VDC, 4-32 VDC or 24-275 VAC
• Integral snubber network
• Built-in varistor
• Over-temperature protection option with alarm output
• IP 10 back-of-hand protection
• LED indication of control input and over-temperature
Ordering Key
Solid State Relay
Number of poles
Switching mode
Rated opertional voltage
Control voltage
Rated opertional current
Options
alarm status
Control
voltage
LD: 5 VDC
D: 4-32 VDC
A: 24-275 VAC/24-50 VDC
3 x 55 A
RZ3A40LD55
RZ3A40D55
RZ3A40A55
RZ3A48LD55
RZ3A48D55
RZ3A48A55
RZ3A60LD55
RZ3A60D55
RZ3A60A55
RZ 3 A 60 D 75 P
-30° to +80°C (-22° to +158° F)
-40° to +100°C (-40° to + 212° F)
+125°C (+ 257˚F)
(available only for A and D input)
Option
P: Over-
temperature
protection and
alarm output
3 x 75 A
RZ3A40LD75
RZ3A40D75
RZ3A40A75
RZ3A48LD75
RZ3A48D75
RZ3A48A75
RZ3A60LD75
RZ3A60D75
RZ3A60A75
1