Skip to main content
Unison Model 803 Slim
UNI 803 PHT 24 50 420 + B-24 HEAT SINK + DIN RAIL with dimensions
Dimensions and terminals, from Unison's catalogue photograph of UNI 803 PHT 24 50 420 + B-24 HEAT SINK + DIN RAIL.

Model 803 Slim · Slim Analog Phase Angle Control Solid State Relay

UNI 803 PHT 24 50 420 + B-24 HEAT SINK + DIN RAIL

50 A · Phase angle solid state relay.

Specifications

Slim width 23.6 mm design
Thyristor controller (Phase Angle control SSR)
Input
4 to 20mA/<100E or 0-10 VDC/560 Ω
Output
230VAC or 440VAC (47-63 Hz), 50 Amp
PIV
1200Vpk, I²T : 3000A²S for 9.6mS
Body insulation
4kV for 1min
I/P. to O/P. insulation
6kV for 1min
Inbuilt surge voltage protection of 2700Vrms
Short Circuit Protection by “B” Curve DP MCB
Resistive load Max 15 A SC protect by 16 A DP MCB

Load current by heat sink

Rated at 40 °C ambient, from Unison's derating tables.

V-8722 Amp
B-2430 Amp
B-4816 A x 2 = 32 Amp
(16 A / phase across 2 phases)
B-7216 A x 3 = 48 Amp
(16 A / phase across 3 phases)
Derating Table: Rated load current at 40 °C ambient
Heat Sink / MountingRated Load Current @ 40 °C
V-8722 Amp
B-2430 Amp
B-4816 A x 2 = 32 Amp
B-7216 A x 3 = 48 Amp