Carlo Gavazzi RA 24.. .. 06, RA 44.. .. 08, RA 48.. .. 12 Catalog Page
Specifications are subject to change without notice 1
• AC Solid State Relay
• Zero switching or instant-on switching
• Direct copper bonding technology
• Rated operational current: 10, 25, 50 and 90 AACrms
• Non-repetitive voltage: Up to 1200 Vp
• Rated operational voltage: Up to 480 VACrms
• 3 input ranges: 3 to 32 VDC, 10 to 90 VAC/DC and
90 to 280 VAC/DC
• Insulation: OPTO (input-output) 4000 VACrms
Product Description
The zero switching relay with
antiparallel thyristor output is
the most widely used industrial SSR due to its multiple
application possibilities. The
relay can be used for resis-
Solid State Relay
Switching mode
Rated operational voltage
Rated operational current
Control voltage
Non-rep. peak voltage
Ordering Key
Solid State Relays
tive, inductive and capacitive
loads. The zero switching relay switches ON when the
sine curve just crosses zero
and switches OFF when the
current crosses zero.
Type Selection
Switching mode Rated operational Rated operational Control voltage Non-rep. voltage
voltage current
A: Zero switching 24: 230 VACrms 10: 10 AACrms -D: 3 to 32 VDC 06: 650 Vp
Optional: 44: 400 VACrms 25: 25 AACrms LA: 10 to 90 VAC/DC 08: 850 Vp
B: Instant-on switching 48: 480 VACrms 50: 50 AACrms HA: 90 to 280 VAC/DC 12: 1200 Vp
90: 90 AACrms
Selection Guide
Rated opera- Non-rep. Control voltage Rated operational current
tional voltage voltage 10 AACrms 25 AACrms 50 AACrms 90 AACrms
3 to 32 VDC RA 2410 -D 06 RA 2425 -D 06 RA 2450 -D 06 RA 2490 -D 06
230 VACrms 650 Vp 10 to 90 VAC/DC RA 2410 LA 06 RA 2425 LA 06 RA 2450 LA 06 RA 2490 LA 06
90 to 280 VAC/DC RA 2410 HA 06 RA 2425 HA 06 RA 2450 HA 06 RA 2490 HA 06
3 to 32 VDC RA 4410 -D 08 RA 4425 -D 08 RA 4450 -D 08 RA 4490 -D 08
400 VACrms 850 Vp 10 to 90 VAC/DC RA 4410 LA 08 RA 4425 LA 08 RA 4450 LA 08 RA 4490 LA 08
90 to 280 VAC/DC RA 4410 HA 08 RA 4425 HA 08 RA 4450 HA 08 RA 4490 HA 08
3 to 32 VDC RA 4810 -D 12 RA 4825 -D 12 RA 4850 -D 12 RA 4890 -D 12
480 VACrms 1200 Vp 10 to 90 VAC/DC RA 4810 LA 12 RA 4825 LA 12 RA 4850 LA 12 RA 4890 LA 12
90 to 280 VAC/DC RA 4810 HA 12 RA 4825 HA 12 RA 4850 HA 12 RA 4890 HA 12
Industrial, 1-Phase ZS/(IO), Standard Range
Types RA 24.. .. 06/RA 44.. .. 08/RA 48.. .. 12
RA 24 10 LA 06
2 Specifications are subject to change without notice
RA 24.. .. 06, RA 44.. .. 08, RA 48.. .. 12
RA 24.. .. 06 RA 44.. .. 08 RA 48.. .. 12
Operational voltage range 24 to 280 VACrms 42 to 480 VACrms 42 to 530 VACrms
Non-rep. peak voltage ≥ 650 V
p
≥ 850 V
p
≥ 1200 V
p
Zero voltage turn-on ≤ 20 V ≤ 40 V ≤ 40 V
Operational frequency range 45 to 65 Hz 45 to 65 Hz 45 to 65 Hz
Power factor ≥ 0.5 @ 230 VACrms ≥ 0.5 @ 400 VACrms ≥ 0.5 @ 480 VACrms
Approvals UL, CSA (10, 25, 50 A) UL, CSA (10, 25, 50 A) UL, CSA (10, 25, 50 A)
CSA (90 A) CSA (90 A) CSA (90 A)
General Specifications
RA .... -D .. RA .... LA .. RA .... HA ..
Control voltage range 3 to 32 VDC 10 to 90 VAC/DC 90 to 280 VAC/DC
Pick-up voltage ≤ 3 VDC ≤ 10 VAC/DC ≤ 90 VAC/DC
Drop-out voltage ≥ 1 VDC ≥ 1 VAC/DC ≥ 10 VAC/DC
Reverse voltage ≤ 32 VDC
Input impedance 1.5 kΩ 5.4 kΩ 44 kΩ
Response time pick-up
RA ≤ 1/2 cycle ≤ 1 cycle ≤ 1 cycle
RB ≤ 1 ms ≤ 1 ms ≤ 1 ms
Control pulse width ≥ 0.5 ms ≥ 0.5 ms ≥ 0.5 ms
Response time drop-out ≤ 1/2 cycle ≤ 1/2 cycle ≤ 1/2 cycle
Input Specifications
Output Specifications
RA ..10 .. .. RA ..25 .. .. RA ..50 .. .. RA ..90 .. ..
Rated operational current AC 1 10 Arms 25 Arms 50 Arms 90 Arms
AC 3 3 Arms 5 Arms 15 Arms 20 Arms
Minimum operational current 20 mArms 20 mArms 20 mArms 20 mArms
Rep. overload current t=1 s ≤ 35 Arms ≤ 55 Arms ≤ 125 Arms ≤ 150 Arms
Non-rep. surge current t=20 ms 160 A
p
250 A
p
600 A
p
1000 A
p
Off-state leakage current
@ rated voltage, frequency ≤ 2.5 mArms ≤ 3 mArms ≤ 3 mArms ≤ 3 mArms
I
2
t for fusing t=1-10 ms ≤ 130 A2s ≤ 310 A2s ≤ 1800 A2s ≤ 5000 A
2
s
Critical dI/dt ≥ 100 A/µs ≥ 100 A/µs ≥ 100 A/µs ≥ 100 A/µs
On-state voltage drop
@ rated current ≤ 1.6 Vrms ≤ 1.6 Vrms ≤ 1.6 Vrms ≤ 1.6 Vrms
Critical dV/dt commutating ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs
Critical dV/dt off-state ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs ≥ 500 V/µs
RA ..10 .. .. RA ..25 .. .. RA ..50 .. .. RA ..90 .. ..
Operating temperature -40°C to +100°C -40°C to +100°C -40°C to +100°C -40°C to +100°C
Storage temperature -40°C to +100°C -40°C to +100°C -40°C to +100°C -40°C to +100°C
Junction temperature ≤ 125°C ≤ 125°C ≤ 125°C ≤ 125°C
R
th
junction-case ≤ 2.0 K/W ≤ 1.25 K/W ≤ 0.65 K/W ≤ 0.3 K/W
R
th
junction to ambient ≤ 12.5 K/W ≤ 12 K/W ≤ 12 K/W ≤ 12 K/W
Thermal Specifications
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