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Model 901 · Single-phase SSR
Zero Cross DC to AC SSR
The 45 mm hockey-puck workhorse. DC control signal, zero-cross switching for heaters and resistive loads.
- Series
- Model 901
- Type
- Single-phase SSR
- Ratings
- 25–200 A
- Control
- 4–32 VDC
- Switching
- Zero cross
- Phases
- Single
Part number
UNI 901 ZDA 48 25 01 AL5 + DIN RAIL
Specifications
- Lowest thickness 22.5mm with 5mm Aluminium Plate
- Input4-32VDC / 4-16mA
- Input Green LED Indication
- Output24-480VAC (47-63 Hz), 25 Amp
- PIV800, I²T : 340A²S for 9.6mS
- Zero Cross Over SSR design
- Body insulation6kV for 1min
- I/P. to O/P. insulation6kV for 1min
- Inbuilt surge voltage protection of 2700Vrms
- Long life cycle Up to 10¹¹ cycles
Load current at 40 °C, by heat sink
- Without Heat sink10 Amp
- C-5612 Amp
- G-6816 Amp
Figures from Unison's published load table for this rating.
Related products
ULModel 901
Zero Cross AC to AC SSR
Same 45 mm platform, driven directly from a 100-280 VAC control signal.
- Rating
- 25–200 A
- Control
- 100–280 VAC
- Switching
- Zero cross
ULModel 901
Random Turn-On DC to AC SSR
Instant-on switching for inductive loads and phase-controlled applications.
- Rating
- 25–200 A
- Control
- 4–32 VDC
- Switching
- Random turn-on
ULModel 901
Analog Phase Angle Control SSR
Proportional power from a 4-20 mA or 0-10 VDC signal.
- Rating
- 25–200 A
- Control
- 4–20 mA / 0–10 V
- Switching
- Phase angle
Model 901
Phase Angle Controller by Pot
Manual power control with a single-turn potentiometer.
- Rating
- 25–50 A
- Control
- Potentiometer
- Switching
- Phase angle