Carlo Gavazzi RZ3A Catalog Page
Specifications are subject to change without notice (01.10.2003) 1
Rated operational Control Rated operational current
voltage voltage 3 x 25 A 3 x 40 A 3 x 55 A 3 x 75 A
400 VACrms 5 VDC RZ3A40LD25 RZ3A40LD40 RZ3A40LD55 RZ3A40LD75
4-32 VDC RZ3A40D25 RZ3A40D40 RZ3A40D55 RZ3A40D75
24-275 VAC/24-50 VDC RZ3A40A25 RZ3A40A40 RZ3A40A55 RZ3A40A75
600 VACrms 5 VDC RZ3A60LD25 RZ3A60LD40 RZ3A60LD55 RZ3A60LD75
4-32 VDC RZ3A60D25 RZ3A60D40 RZ3A60D55 RZ3A60D75
24-275 VAC/24-50 VDC RZ3A60A25 RZ3A60A40 RZ3A60A55 RZ3A60A75
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.
Switching Rated operational Rated operational Control Option
mode voltage current voltage
A: Zero Switching 40: 400 VACrms 25: 3 x 25 AACrms LD: 5 VDC P: Over-
60: 600 VACrms 40: 3 x 40 AACrms D: 4-32 VDC temperature
55: 3 x 55 AACrms A: 24-275 VAC/24-50 VDC protection and
75: 3 x 75 AACrms alarm output
(available only for A and D input)
Selection Guide
Solid State Relay
Number of poles
Switching mode
Rated opertional voltage
Control voltage
Rated opertional current
Options
A Solid State Relay family
designed to switch various
loads such as heating elements, motors and transformers. The relay is capable of
switching high voltages up to
600 VACrms.
For higher reliability and load
cycle capability three semiconductor power units are soldered directly on to the direct
copper bonded (DCB) sub-
strate.
AC- or DC-controlled versions
are available. Built-in LED status indication for applied control voltage and over-temperature 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 currents up to 75 AACrms.
Solid State Relays
Industrial, 3-Phase ZS
Type RZ3A
• 3-phase Solid State Relay
• Zero switching
• Rated operational current: 3 x 25, 40, 55 or 75 A
• Rated operational voltage: Up to 600 VAC
• Control voltage 5 VDC, 4-32 VDC or 24-275 VAC
• Integral snubber networks
• Over-temperature protection option with alarm output
• IP 10 back-of-hand protection
• LED indication of control input and over-temperature
alarm status
Ordering Key
Product Description
Type Selection
RZ 3 A 60 D 75 P
Rated insulation voltage
Input to output ≥ 4000 VACrms
Output to case ≥ 4000 VACrms
Operating temperature -30° to +80°C (-22° to +158° F)
Storage temperature -40° to +100°C (-40° to + 212° F)
Junction temperature ≤ +125°C (+ 257˚F)
Thermal Specifications
Insulation
2 Specifications are subject to change without notice (01.10.2003)
RZ3A..25.. RZ3A..40.. RZ3A..55.. RZ3A..75..
Rated operational current
AC51 @ Ta=25°C 25 Arms 40 Arms 55 Arms 75 Arms
AC53a @ Ta=25°C 5 Arms 8 Arms 15 Arms 20 Arms
Minimum operational current 150 mArms 150 mArms 150 mArms 150 mArms
Rep. overload current t=1 s 37 Arms 60 Arms < 125 Arms < 150 Arms
Non-rep. surge current
t = 10 ms
230 A
p
300 A
p
600 A
p
1000 A
p
Off-state leakage current < 3 mArms < 3 mArms < 3 mArms < 3 mArms
I2t for fusing t = 10 ms 265 A2s 450 A2s 1800 A2s 6600 A2s
Critical dI/dt @ 50 Hz ≥ 100 A/µs ≥ 100 A/µs ≥ 100 A/µs ≥ 100 A/µs
On-state voltage drop ≤ 1.6 Vrms ≤ 1.6 Vrms ≤ 1.6 Vrms ≤ 1.6 Vrms
Critical dV/dt off-state ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs
RZ3A40.. RZ3A60..
Operational voltage ranges 24-440 VAC 42-660 VAC
Non-rep. peak voltage 850 V
p
1200 V
p
Operational frequency range 45 to 65 Hz 45 to 65 Hz
Overvoltage category III III
Pollution degree 3 2
Approvals UL, cUL, CSA UL, cUL,CSA
CE-marking Yes Yes
General Specifications
RZ3A
Input Specifications
RZ3A..LD.. RZ3A..D.. RZ3A..A..
Control voltage range 5 VDC 4-32 VDC 24-275 VAC/24-50 VDC
Pick-up voltage 4.5 VDC 3.8 VDC 18 VAC/20 VDC
Drop-out voltage 1.2 VDC 1.2 VDC 9 VAC/DC
Input current ≤
15 mA ≤ 23 mA ≤ 15 mA
Response time pick-up
Power output = 50 Hz 10 ms 10 ms 20 ms
Response time drop-out
Power output = 50 Hz 10 ms 10 ms 30 ms
All data at 25°C
Output Specifications
Over-temperature Protection (Option: ...P)
*After over-temperature condition is removed, SSR can be reset by switching OFF the control input for more than 20 ms and switching back ON: this will
*switch ON the SSR output
SSR Input
Green LED
Red LED
SSR Output
Alarm status
Over-temperature
sensing
Closed
Open
Over-temperature
detection
Over-temperature protection is ON
SSR output disabled
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