

Model 901 · Zero-cross AC to AC Solid State Relay · UL approved
UNI 901 ZAA 60 90 28 CU2 + B-48 HEAT SINK + DIN RAIL
90 A · Zero-cross solid state relay.
Specifications
- Lowest thickness 19.5mm with 2mm Copper Plate
- Input
- 100-280VAC / 4-12mA, Green LED indication
- Output
- 24-600VAC (47-63 Hz), 90 Amp
- PIV
- 1600, I²T : 7200A²S for 9.6mS
- Body insulation
- 6kV for 1min
- I/P. to O/P. insulation
- 8kV for 1min
- Inbuilt surge voltage protection of 2700Vrms
- Short Circuit Protection by “B” Curve DP MCB
- Resistive load Max 63 A SC protect by 63 A DP MCB
- Short Circuit Current Rating
- 10kA for <3mS
Load current by heat sink
Rated at 40 °C ambient, from Unison's derating tables.
B-4836 Amp
B-7260 Amp
A-10065 Amp
A-190 Heat Sink without Fan36 A x 3 = 108 Amp
(36 A / phase across 3 phases)
A-190 Heat Sink with Fan40 A x 3 = 120 Amp
(40 A / phase across 3 phases)
| Heat Sink / Mounting | Rated Load Current @ 40 °C |
|---|---|
| B-48 | 36 Amp |
| B-72 | 60 Amp |
| A-100 | 65 Amp |
| A-190 Heat Sink without Fan | 36 A x 3 = 108 Amp |
| A-190 Heat Sink with Fan | 40 A x 3 = 120 Amp |
Same series












