Product Specifications
- Brand
- Siemens
- Part Number
- 4AM6442-8DD40-0FA0
- Product Type
- Control Transformer
- Series
- SITAS 4AM6442
- Rated Power
- 2,000 VA
- Primary Voltage
- 525/500/480 V (3-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 control transformer with a three-tap primary spanning 525/500/480V, stepping down to 230V at 8.70A. This is the highest-power transformer available with the 480-525V multi-tap primary configuration — delivering the full 4AM6442 platform performance for the largest control panels in this voltage range.
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. Three primary taps accommodate regional voltage variations. Full galvanic isolation via II0 vector group.
Mechanical Design
Substantial 158x176x164mm 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 with 480-525V distribution — North American manufacturing plants, 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 | 525 / 500 / 480 V (3 taps) |
| Secondary Voltage | 230 V |
| Secondary Current | 8.70 A |
| Short-Time Power (S6) | 9,700 VA |
| Efficiency | ~96% |
| Insulation Class | B (130 C) |
| Protection Class | IP00 |
| Dimensions (WxHxD) | 158 x 176 x 164 mm |
| Mounting | Screw Mount |
Related Products
- Siemens 4AM6442-5AT10-0FA0 — 8.70A at 230V from 400V, 9,700VA S6 — highest SITAS rating
- Siemens 4AM6442-8JD40-0FA0 — Widest coverage at highest SITAS power, dual 115V secondaries
Resources & Documentation
Siemens 4AM6442-8DD40 525/500/480V to 230V 2000VA Control Transformer
Product Specifications
- Brand
- Siemens
- Part Number
- 4AM6442-8DD40-0FA0
- Product Type
- Control Transformer
- Series
- SITAS 4AM6442
- Rated Power
- 2,000 VA
- Primary Voltage
- 525/500/480 V (3-tap)
- Secondary Voltage
- 230 V
- Secondary Current
- 8.70 A
- Short-Time Power (S6)
- 9,700 VA
- Frequency
- 50/60 Hz
- Mounting
- Screw Mount








