Product Specifications
- Brand
- Siemens
- Part Number
- 4AM6442-8DD40-0FA0
- Product Type
- Control Transformer
- Series
- SITAS 4AM6442
- Rated Power
- 2,000 VA
- Primary Voltage
- 208–550 V (11-tap)
- Secondary Voltage
- 230 V
- Secondary Current
- 8.70 A
- Short-Time Power (S6)
- 9,700 VA
- Frequency
- 50/60 Hz
- Mounting
- Screw Mount
Product Description
The SITAS 4AM6442-8DD40-0FA0 is a 2000VA single-phase safety isolating transformer with an 11-tap primary spanning 208-550V, stepping down to 2x115V (230V in series, 8.70A). This is the highest-power transformer in the SITAS multi-tap range — delivering the full 4AM6442 platform performance for the largest control panels across worldwide mains voltages.
Electrical Performance
Rated at 2,000VA continuous with a short-time power rating of 9,700VA (S6 duty) — nearly 5x headroom. The EI 174/102 laminated core achieves approximately 96 percent efficiency. Eleven primary taps (208-550V) accommodate worldwide mains voltages. Full galvanic isolation via II0 vector group.
Mechanical Design
Substantial 176 × 164 × 158 mm IP00 open-frame construction for enclosure installation with screw terminals and screw mounting. Class B (130 °C) insulation system, rated for 40 °C ambient. Weighs approximately 25 kg.
Application
Suits large industrial control panels in facilities worldwide — including North American manufacturing plants on 480V distribution, processing facilities, and heavy-industrial sites — where 230V control power is required at the highest SITAS power rating.
Decision Parameters
| Parameter | Value |
|---|---|
| Rated Power | 2,000 VA |
| Primary Voltage | 11 taps: 208–550 V |
| Secondary Voltage | 2 × 115 V (230 V series) |
| Secondary Current | 8.70 A |
| Short-Time Power (S6) | 9,700 VA |
| Efficiency | ~96% |
| Insulation Class | B (130 °C) |
| Protection Class | IP00 |
| Dimensions (WxHxD) | 176 × 164 × 158 mm |
| Mounting | Screw Mount |
Resources & Documentation
Siemens 4AM6442-8DD40 208-550V to 2x115V 2000VA Safety Isolating Transformer
Product Specifications
- Brand
- Siemens
- Part Number
- 4AM6442-8DD40-0FA0
- Product Type
- Control Transformer
- Series
- SITAS 4AM6442
- Rated Power
- 2,000 VA
- Primary Voltage
- 208–550 V (11-tap)
- Secondary Voltage
- 230 V
- Secondary Current
- 8.70 A
- Short-Time Power (S6)
- 9,700 VA
- Frequency
- 50/60 Hz
- Mounting
- Screw Mount







